tag:blogger.com,1999:blog-82573344908880275072024-02-08T05:22:23.364+02:00zero fidelity CNCA blog about building a DIY CNC laser cutter / engraver from mostly recycled parts.Unknownnoreply@blogger.comBlogger10125tag:blogger.com,1999:blog-8257334490888027507.post-71954527874195264432011-03-12T15:02:00.002+02:002011-03-12T15:08:00.708+02:00Removing the LD from the Aixiz moduleOK, I finally got on with this project. Next step for me was to remove the existing laser diode (LD) from the 650nm Aixiz module.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEighbheh_CZvtwGKjVvXlL7h50rka2ZE3pEymrSwpJi8CjmcsMMsDjFfPlPasWXtS47hsR6vfACY2irbGwA1Ia7bya_BKGespqh5UpvKAgyNiRK0rxchM6Dhy1oO6ljWDIZ2j8A-mPNrHQ/s1600/P1090849.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="235" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEighbheh_CZvtwGKjVvXlL7h50rka2ZE3pEymrSwpJi8CjmcsMMsDjFfPlPasWXtS47hsR6vfACY2irbGwA1Ia7bya_BKGespqh5UpvKAgyNiRK0rxchM6Dhy1oO6ljWDIZ2j8A-mPNrHQ/s320/P1090849.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Here's the 650nm 5mW Aixiz module before the operation. The original plastic lens and spring has been removed. The upper lens in the picture is the glass lens, which I'll use later for the burning laser.</td></tr>
</tbody></table><br />
The module can be screwed open, but it is REALLY tight. They've used some white glue and I needed to use pliers to get it open. Using pliers leaves some little marks on the metal, but it doesn't matter.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj6r9l_MJOdML_HMQZLke3TpzBHyTBm_TlRhX6imsL-v9UyyHw52ss9b7QT1BGrdzMxeM5_bVpZJs0vtLB_xkaYZpxn-2O6IyTF4Z11GUVqtPZ8ysjzg94FQGorlzNw929C6UVgIYRrcPc/s1600/P1090853.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj6r9l_MJOdML_HMQZLke3TpzBHyTBm_TlRhX6imsL-v9UyyHw52ss9b7QT1BGrdzMxeM5_bVpZJs0vtLB_xkaYZpxn-2O6IyTF4Z11GUVqtPZ8ysjzg94FQGorlzNw929C6UVgIYRrcPc/s320/P1090853.JPG" width="271" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Using pliers to get the Aixiz module open.</td></tr>
</tbody></table>Next I needed to remove the original laser diode & driver electronics from the module. I used a nail and a hammer to kick the LD out. It will break but I don't need it. <a href="http://media.photobucket.com/image/site:laserpointerforums.com%20removing%20the%20LD%20from%20the%20aixiz%20module/mevalemadre10/remove_diode1.jpg">If you want to save the LD & the electronics, here's a good way to get it out without breaking it.</a><br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiK0pIeEJbtNdcOKXKhi3KqeQJWHn_di1Ett55R_-9izgHG0Ea4iCUQqYY3X6LYmgN1vYGMlu3Jo_wdQ8FWls0O5sWm0eCV5Q0DtmH_9FNBoxxN8DznTLwS7Vbx40HpfVARcKLwDWHn9_A/s1600/P1090857.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="220" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiK0pIeEJbtNdcOKXKhi3KqeQJWHn_di1Ett55R_-9izgHG0Ea4iCUQqYY3X6LYmgN1vYGMlu3Jo_wdQ8FWls0O5sWm0eCV5Q0DtmH_9FNBoxxN8DznTLwS7Vbx40HpfVARcKLwDWHn9_A/s320/P1090857.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"> The original laser diode and the small driver PCB are visible.</td></tr>
</tbody></table><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhke7zhyfRTXz9wWrT6HMofYkWOQ68nfyx-sVStSggr95SCIRSoFsXyks78KkWhoEvfacMFjnpIi46EJ8r-RW-adC1bQLOErYztghUxTg6jSz2XR8HOfZSyM3B4EOkpOnonusaII_Zi_R4/s1600/P1090858.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="265" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhke7zhyfRTXz9wWrT6HMofYkWOQ68nfyx-sVStSggr95SCIRSoFsXyks78KkWhoEvfacMFjnpIi46EJ8r-RW-adC1bQLOErYztghUxTg6jSz2XR8HOfZSyM3B4EOkpOnonusaII_Zi_R4/s320/P1090858.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Here's the module after removing the original LD.</td></tr>
</tbody></table><br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj81QgnGpGS-NpTjPDklTq0mMp65SPUWMSc7uOF4A1pjnVEJEOhPAWgHQmXvK32RWpfl360mpHCSoj4zfpO-L0E4N_iLW5u0iNoDQWQSloJhmFsDqqHVUw0jWMboy4Fb-IiEqgE_smvS1E/s1600/P1090860.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj81QgnGpGS-NpTjPDklTq0mMp65SPUWMSc7uOF4A1pjnVEJEOhPAWgHQmXvK32RWpfl360mpHCSoj4zfpO-L0E4N_iLW5u0iNoDQWQSloJhmFsDqqHVUw0jWMboy4Fb-IiEqgE_smvS1E/s320/P1090860.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Another shot of what will soon become a high-power burning laser.</td></tr>
</tbody></table><br />
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Next I will insert the <a href="http://zerofidelity.blogspot.com/2010/12/gutting-dvd-player-for-laser-diode.html">250mW laser diode I gutted from an old DVD-R drive</a> to make the burning laser.Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-8257334490888027507.post-57184895831550630192011-01-26T11:26:00.000+02:002011-01-26T11:26:51.261+02:00Aixiz module finally arrived!After waiting for a month, I finally got the module from Aixiz. I had been very busy anyway, so the delay didn't really matter.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcS20lYShAXQYXHDXYIoqiT0Nme_iopMzYVb-T9eUDTtDXM_9nELz1B6Om08IXAZurDExZyjTdE0s-CjLH1Eiysiw992KumlrCm_r8CimgTauw074Kvl_7jqY2ecrd1bCk7GcUwBMDJBg/s1600/P1090824.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="248" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjcS20lYShAXQYXHDXYIoqiT0Nme_iopMzYVb-T9eUDTtDXM_9nELz1B6Om08IXAZurDExZyjTdE0s-CjLH1Eiysiw992KumlrCm_r8CimgTauw074Kvl_7jqY2ecrd1bCk7GcUwBMDJBg/s320/P1090824.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Here it is: the 650nm 5mW Aixiz module!</td></tr>
</tbody></table><br />
I also got an extra lens for it, made of glass. I'm sure it's better suited for a laser CNC than the plastic one the module came with.<br />
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This module is needed for collimation and heat sinking. I will put the laser diode inside the module and focus the beam with the glass lens. <br />
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Next up: how to insert the 250mW laser diode into the Aixiz module.Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-8257334490888027507.post-90107586050297339532011-01-26T11:05:00.000+02:002011-01-26T11:05:36.152+02:00Sketching the CNCSo, at this point, I have a scanner that I'm going to use as a base, with a stepper controlling the movement along one axis.<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5OyUhsLcRA5OI-cwmS-yqV7FPbN1ftJpjFCfA028fviNTd6L8fbzmNvxkDQgMqMftDwvtWyV61KdG2LGjFyg-Iaz0a6YMe7glG-ufAdu9yAD5AmgxapHn-S1OX45J4q8W1GPQLckDR9U/s1600/P1090762+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5OyUhsLcRA5OI-cwmS-yqV7FPbN1ftJpjFCfA028fviNTd6L8fbzmNvxkDQgMqMftDwvtWyV61KdG2LGjFyg-Iaz0a6YMe7glG-ufAdu9yAD5AmgxapHn-S1OX45J4q8W1GPQLckDR9U/s320/P1090762+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">This is the scanner I'm going to use as the base.</td></tr>
</tbody></table>I also have a stepper motor, a metal rail and a pulley system that will be used to move along the other axis.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLLqgEJAcsv8FmJGsp7265cJcZ7IdLFt8z4AaT5j536NOlVHEpiQDB43Crh6kIrr8ktTHd8IiAZ-OTCPhMeHt-dLXlY0RSg1ihkyxqUjOO3sktBHrW69uB86KmftAgyzgp_Kk3ZzprXKU/s1600/P1090746.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="216" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLLqgEJAcsv8FmJGsp7265cJcZ7IdLFt8z4AaT5j536NOlVHEpiQDB43Crh6kIrr8ktTHd8IiAZ-OTCPhMeHt-dLXlY0RSg1ihkyxqUjOO3sktBHrW69uB86KmftAgyzgp_Kk3ZzprXKU/s320/P1090746.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">A stepper motor from an old printer.</td></tr>
</tbody></table><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7DJzpvSc9PQz6IW8eci022rsLIHh2QMX44t1oCHNEfNvwhDzbpq-eVO_XZAcFjOgNMMh4ABG9j1mE0KnSvQ2q7RYIroE25BnzuCMMs4FqAsMcO8eeA0uanPANT0lVukk8ZuW6-wU5ZSA/s1600/P1090711.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="103" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7DJzpvSc9PQz6IW8eci022rsLIHh2QMX44t1oCHNEfNvwhDzbpq-eVO_XZAcFjOgNMMh4ABG9j1mE0KnSvQ2q7RYIroE25BnzuCMMs4FqAsMcO8eeA0uanPANT0lVukk8ZuW6-wU5ZSA/s320/P1090711.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">A metal rail & old printhead.</td></tr>
</tbody></table><br />
I was thinking about the possibilities how to create the XY-controlled CNC from these parts, and came up with three sketches.<br />
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I admit, I'm very bad at drawing, but anyway, I decided to share these sketches with you.<br />
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<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj_beLIjjFcoY3iPlKOE3PwZ3sz1uGyyVFiL2eXMaNTo8m4_nT3xPCfuVmCof1Exj69dIODOhAsjeFuI_Qh1TUhB7KWEfiYhecS1KArEU9NDxw7TYvOVHIDkJC8wuDh97sOpx4r2bzV4MI/s1600/idea2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"></a></div>My first idea on how to construct the CNC was not a very brilliant one:<br />
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<div style="text-align: center;"></div><div style="text-align: center;"></div><div style="text-align: center;"></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj_beLIjjFcoY3iPlKOE3PwZ3sz1uGyyVFiL2eXMaNTo8m4_nT3xPCfuVmCof1Exj69dIODOhAsjeFuI_Qh1TUhB7KWEfiYhecS1KArEU9NDxw7TYvOVHIDkJC8wuDh97sOpx4r2bzV4MI/s1600/idea2.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" height="265" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj_beLIjjFcoY3iPlKOE3PwZ3sz1uGyyVFiL2eXMaNTo8m4_nT3xPCfuVmCof1Exj69dIODOhAsjeFuI_Qh1TUhB7KWEfiYhecS1KArEU9NDxw7TYvOVHIDkJC8wuDh97sOpx4r2bzV4MI/s320/idea2.jpg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">First idea of the CNC, a very shitty one. The laser points up. </td></tr>
</tbody></table><div style="text-align: center;"></div><div style="text-align: center;"><br />
</div><div style="text-align: left;">The surface to be engraved would be held upside down over the CNC byt something, and the beam is pointed upwards from the scanner. Well, you can imagine how this would make the whole set-up and engraving process a pain in the ass. Especially with heavier items.</div><div style="text-align: left;"><br />
</div><div style="text-align: left;">Next idea, already a bit better one:</div><div style="text-align: left;"><br />
</div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh4QYqRrIgy3pYeeDm_CIFwLGbLEjKrpRn5RHnl9SvbZQOZdXPYoR_FTCw14u1a-gbEC88qJEwN6CnF4-aPldj02nDd1KBbjyPumUNkyc-lj2U_9XfFQbcdmXougkD_c2YhCfwnjInm54o/s1600/idea1.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="228" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh4QYqRrIgy3pYeeDm_CIFwLGbLEjKrpRn5RHnl9SvbZQOZdXPYoR_FTCw14u1a-gbEC88qJEwN6CnF4-aPldj02nDd1KBbjyPumUNkyc-lj2U_9XfFQbcdmXougkD_c2YhCfwnjInm54o/s320/idea1.jpg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">2nd sketch of the CNC.</td></tr>
</tbody></table><div style="text-align: left;"><br />
</div><div style="text-align: left;">Now the scanner is held upside down, and the engraved surface is lying beneath it. The rail is sticking a bit out from the side (it's wider than the scanner). The laser points down. The problem with this one is that it limits the engravable things a bit. It would be hard to put bigger items under it, like a guitar, a synth, or things like that.</div><div style="text-align: left;"><br />
</div><div style="text-align: left;">With the third idea I think I nailed it.</div><div style="text-align: left;"><br />
</div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4xKuVZSjRef3d5dMaTEdh7Ywhpb6e4cNUfdnEwhTsCaWh7-Judp_tAUCsYOb2_XBEpQqKbKNbod5glcEedBFc69RVvmluqvi3x7RJ8zX_arJzpmClbj4nsIzDnkfYehr1v_SW3VRaKr8/s1600/idea3.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" height="312" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4xKuVZSjRef3d5dMaTEdh7Ywhpb6e4cNUfdnEwhTsCaWh7-Judp_tAUCsYOb2_XBEpQqKbKNbod5glcEedBFc69RVvmluqvi3x7RJ8zX_arJzpmClbj4nsIzDnkfYehr1v_SW3VRaKr8/s320/idea3.jpg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Third and probably the final sketch of the CNC.</td></tr>
</tbody></table><div style="text-align: left;"><br />
</div><div style="text-align: left;">Now you can put whatever items under it. The metal rod & pulley system is held high by a big piece of something. I just wonder how the scanner motor & tray will pull it off with all that weight. Obviously I'll need to make it as light & balanced as possible. Or then I need something to hold the rail from the other end...</div><div style="text-align: left;"></div><div style="text-align: left;"></div><div style="text-align: left;">I have no idea yet how I will do all of that. These are just the first ideas I came up with. </div>Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-8257334490888027507.post-42076553501595132572011-01-26T10:44:00.000+02:002011-01-26T11:01:07.890+02:00Laser diode driver circuitHere's the schematic of an adjustable laser diode driver circuit. It's based on <a href="http://laserpointerforums.com/f42/diy-homemade-laser-diode-driver-26339.html">this post by nickname Daedalus on the Laser Pointer Forums</a>. This post has gotten so popular that people are referring to the circuit as a 'DDL circuit' (DDL is Daedalus' signature in the forums). It's just a constant current driver, but Daedalus was the one who popularized the use of this in DIY laser scene.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"></td><td style="text-align: center;"></td><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZnM40-GeweVG_rOSp8y8Wu_UAnnl8U7xnnM0L5GB0N7gx0KR5sTLRZChDN-IAcbmevNHpgOSyPGJmXLIj3OpFjeDZTfJoZu8M0br3VWPHcPIC7Ai3sgKeHvkoA3W87SYbiN9Dsn_H6y0/s1600/ldcircuit.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="168" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZnM40-GeweVG_rOSp8y8Wu_UAnnl8U7xnnM0L5GB0N7gx0KR5sTLRZChDN-IAcbmevNHpgOSyPGJmXLIj3OpFjeDZTfJoZu8M0br3VWPHcPIC7Ai3sgKeHvkoA3W87SYbiN9Dsn_H6y0/s400/ldcircuit.jpg" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"></td></tr>
</tbody></table><br />
From various sources in the internet, the voltage of the red 16x DVD burner led is found to be 3.2V and it's said (in various sources in the 'net) to withstand 250mA current. The laser output power is said to be 250mW. That is the power of the light coming out of the diode. It's not needed for these calculations.<br />
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The circuit, <a href="http://www.rog8811.com/laserdriver.htm">like this one</a>, is using two 10 ohm resistors in parallel for the limiting resistor. So the total resistance is 5 ohms, and the resulting <a href="http://en.wikipedia.org/wiki/Electric_power">wattage</a> is 2x the <a href="http://www.bcae1.com/resistrs.htm">wattage of the resistors</a>. 5 ohms results in a maximum output current of 250mA.<br />
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The two capacitors in the input and in the output can be for example 10 microfarads both. They are there to flatten any voltage spikes coming from the input. The bigger the caps, the flatter the voltages. 10 microfarads should be more than enough.<br />
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According to <a href="http://users.telenet.be/davshomepage/current-source.htm">this Davshomepage article,</a> the optimum input voltage is: LD voltage 3.2V + 3V needed by LM317 + 1V reserve = 7.2 V.<br />
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However, I'm planning to use this one with a 9V power supply. That means the LM317 will have to dissipate some extra power. Thus, I calculated some power dissipation figures. These are not necessary - if you use the same parts, the circuit will work just the same.<br />
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The maximum power dissipation in the whole circuit (including LD) is 9V*0.25A = 2.25 W.<br />
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Maximum power dissipation in the driver circuitry is 9V-3.2V*0.25A = 1.45 W.<br />
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Maximum power dissipation in the limiting resistor 1.25V * 0.25A = 0.3 W<br />
(the LM317 makes sure there's always 1.25V over the limiting resistor. 0.25A is the maximum current)<br />
<br />
Maximum power dissipation in the laser diode is going to be 3.2V * 0.25A = 0.8 W.<br />
(3.2V is the laser diode voltage and 0.25A is the maximum current)<br />
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The main thing to look at here is the maximum power dissipation in the limiting resistor. So if I use two 1/4 W resistors, I get about 1/2 W rating for the parallel connection and that's more than 0.3W, so the resistors shouldn't burn out even with maximum output.<br />
<br />
I will probably use some salvaged heat sink, at least for the LM317. For the LD (laser diode), the Aixiz module works as a heat sink and should be enough.<br />
<br />
<b>Parts list:</b><br />
<a href="http://zerofidelity.blogspot.com/2010/12/gutting-dvd-player-for-laser-diode.html">Laser diode from a 16x DVD burner drive</a><br />
<a href="http://en.wikipedia.org/wiki/LM317">LM317 adjustable regulator</a> (preferably in TO-220 package) <br />
2 x 10 ohm 1/4 W resistors<br />
100 ohm <a href="http://en.wikipedia.org/wiki/Potentiometer">potentiometer</a><br />
2 x <a href="http://en.wikipedia.org/wiki/Capacitor">capacitors</a>, for example 10uF (microfarads)<br />
A piece of metal as a <a href="http://en.wikipedia.org/wiki/Heat_sink">heat sink</a> for the LM317.<br />
650nm 5.0mW 12x30mm <a href="http://aixiz.com/">Aixiz module</a> (to house the laser diode)<br />
<br />
Stay tuned for part II, where I'll build this circuit.<br />
<br />
<b>Related links: </b><br />
<a href="http://users.telenet.be/davshomepage/current-source.htm">Davshomepage - Constant current source</a> - A good page that helped me with the power calculations.<br />
<a href="http://laserpointerforums.com/f42/diy-homemade-laser-diode-driver-26339.html">Laser Pointer Forums - Daedalus' DIY Homemade laser diode driver</a> - The classic DIY Laser driver.<br />
<a href="http://www.rog8811.com/laserdriver.htm">It can be done - Laser driver</a> - Another page on the laser driver circuit.<br />
<a href="http://en.wikipedia.org/wiki/LM317%20">LM317 on Wikipedia</a><br />
<a href="http://www.national.com/ds/LM/LM317.pdf%20">National Semiconductor LM317 regulator datasheet</a><br />
<a href="http://www.bcae1.com/resistrs.htm">Resistors: color codes, wattages...</a> - A great tutorial page for dummies.Unknownnoreply@blogger.com6tag:blogger.com,1999:blog-8257334490888027507.post-55445816229884490272010-12-22T22:36:00.001+02:002010-12-27T14:15:56.337+02:00Gutting a dead scannerThis broken HP C7670A scanner should come in handy in this project! I'm sure I'll find the one stepper I've been looking for, and maybe I'll use this one as a base for the whole laser CNC thingy.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8vFaVCjJLQYdCZzChfK0mvL_iR5-Qzx9au1IUX0uXsV4k9HyFByn6jLK0xBn2-Oflx3RVjADKBzrwKz0LMZ0nG3GsISvvUEybnqe037eXaOnAlxMJywXczKezOdSsCPITWnjZdmmKXcw/s1600/P1090693.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8vFaVCjJLQYdCZzChfK0mvL_iR5-Qzx9au1IUX0uXsV4k9HyFByn6jLK0xBn2-Oflx3RVjADKBzrwKz0LMZ0nG3GsISvvUEybnqe037eXaOnAlxMJywXczKezOdSsCPITWnjZdmmKXcw/s320/P1090693.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">The broken HP C7670A.</td></tr>
</tbody></table><div class="separator" style="clear: both; text-align: center;"><br />
</div><div class="separator" style="clear: both; text-align: left;">So I opened it and removed the PCBs. They're going back to the electronic waste disposal...</div><div class="separator" style="clear: both; text-align: left;"><br />
</div><div class="separator" style="clear: both; text-align: left;">I like the way they tighten the belt in this scanner!</div><div class="separator" style="clear: both; text-align: center;"><br />
</div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhndLXsqLYT0-8YRMQhCmOtZWM87yEXfRPJ2ItvtAoY-xr7-lhsBmTDYS7D2SUhfzxVIL6V0FIL0AOILFyXQNu7mCueU8PM4R6xLc0ZjaIxMls2Ud9JcOMj7SB6oc4EG4QUhYR1dk2afs0/s1600/P1090698.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhndLXsqLYT0-8YRMQhCmOtZWM87yEXfRPJ2ItvtAoY-xr7-lhsBmTDYS7D2SUhfzxVIL6V0FIL0AOILFyXQNu7mCueU8PM4R6xLc0ZjaIxMls2Ud9JcOMj7SB6oc4EG4QUhYR1dk2afs0/s320/P1090698.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">This spring keeps the belt tight while travelling around with it.</td></tr>
</tbody></table><br />
Remove the poisonous light bulb carefully... It's VERY fragile, like an uncooked spaghetti, and contains poisonous mercury. Mercury causes all kinds of nasty stuff and <b>it can even make you homosexual!</b> You heard right! Well at least <a href="http://news.bbc.co.uk/earth/hi/earth_news/newsid_9243000/9243902.stm">if you're a bird, according to BBC</a>.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgTevKihNpuSB-Vj6R3aDSOMgsE8PF5_cLZfpsDW7rOSvGhnvguaQRtx0fgxDGt33OJZSzoDnxIs6-ZEi3eS9kJgWiNgyaNnU0PyydMZM3hrvOdKJPPgfjlqC-T_I-zJEm8QmIoF20nuaw/s1600/P1090703.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="198" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgTevKihNpuSB-Vj6R3aDSOMgsE8PF5_cLZfpsDW7rOSvGhnvguaQRtx0fgxDGt33OJZSzoDnxIs6-ZEi3eS9kJgWiNgyaNnU0PyydMZM3hrvOdKJPPgfjlqC-T_I-zJEm8QmIoF20nuaw/s320/P1090703.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Be VERY careful with this lamp...</td></tr>
</tbody></table><br />
I took the optics away from the scanner tray. Pretty. Dunno what to do with them yet.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmdrU77N9odgCLjWd_CbqfPn_NG2o3bqyR2vx3zXoQaIkoGONlVWFIMl3mJNQ_ryIr_013wgVZqeGWN9LwM7_c3pIj0uyt9lPScNafFDBK3sICGOOV1Y6EzQx215lIvhwHg739UijGV_s/s1600/P1090709.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="272" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmdrU77N9odgCLjWd_CbqfPn_NG2o3bqyR2vx3zXoQaIkoGONlVWFIMl3mJNQ_ryIr_013wgVZqeGWN9LwM7_c3pIj0uyt9lPScNafFDBK3sICGOOV1Y6EzQx215lIvhwHg739UijGV_s/s320/P1090709.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Some mirrors, a lens and the image sensor.</td></tr>
</tbody></table><br />
Tray's now empty. I wonder how I will do the second axis...<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5OyUhsLcRA5OI-cwmS-yqV7FPbN1ftJpjFCfA028fviNTd6L8fbzmNvxkDQgMqMftDwvtWyV61KdG2LGjFyg-Iaz0a6YMe7glG-ufAdu9yAD5AmgxapHn-S1OX45J4q8W1GPQLckDR9U/s1600/P1090762+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5OyUhsLcRA5OI-cwmS-yqV7FPbN1ftJpjFCfA028fviNTd6L8fbzmNvxkDQgMqMftDwvtWyV61KdG2LGjFyg-Iaz0a6YMe7glG-ufAdu9yAD5AmgxapHn-S1OX45J4q8W1GPQLckDR9U/s320/P1090762+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">This might be a CNC base one day.</td></tr>
</tbody></table><br />
Here's the stepper motor.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXTsrbnzrBYPmLn2AmecYHp5vpJKAJVJfZqZcYP8rqB3yCalRnsWUupiewjYVWj6dbW6U3KFKI95LfKGuQ0maD-03OotdbS4hak3Qz0rSfMQt7A2sgtOvCls2w0qI2HKl7tWYKypG51Wo/s1600/P1090759+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgXTsrbnzrBYPmLn2AmecYHp5vpJKAJVJfZqZcYP8rqB3yCalRnsWUupiewjYVWj6dbW6U3KFKI95LfKGuQ0maD-03OotdbS4hak3Qz0rSfMQt7A2sgtOvCls2w0qI2HKl7tWYKypG51Wo/s320/P1090759+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">SLC-42D003 stepper motor.</td></tr>
</tbody></table><br />
The motor model is SLC-42D003. The manufacturer has printed some specs on it. How kind of them!<br />
It reads: 1.8 deg/step 11 ohms.<br />
I couldn't find any other info on the net.<br />
<br />
I was wondering about the motor's voltage. I checked the power supply PCB again.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3t9mjZOdPBmsnPS4f8jMXZmJ4hZXSQif2I73CzzS9oBFB519bV-nJGgGssZ7LAxuRfw5vTHGIewvFoVhVnEN2S91LekWilM6aTII4V7vd963iE8bSzIedxvIi6nhmoziN4Le2HSHrr8w/s1600/P1090748.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="220" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj3t9mjZOdPBmsnPS4f8jMXZmJ4hZXSQif2I73CzzS9oBFB519bV-nJGgGssZ7LAxuRfw5vTHGIewvFoVhVnEN2S91LekWilM6aTII4V7vd963iE8bSzIedxvIi6nhmoziN4Le2HSHrr8w/s320/P1090748.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">I love these helpful stickers. More of them, please!</td></tr>
</tbody></table>I wasn't hoping for anything like this. The manufacturers had placed some convenient stickers to help me!<br />
<br />
So, the power supply of the unit provides 5V, 12V and 24V. 5V must be for the logic. I googled around and found that the scanner lamps are using 12V. 24V is probably then the power supply for the motor. That should be convenient, since that's also the nominal voltage of the printer stepper I've already salvaged. I might be fine with just one motor power supply.<br />
<br />
That was today's adventure. Now to sleep!Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-8257334490888027507.post-80609444417342031312010-12-21T22:33:00.005+02:002010-12-22T15:42:58.560+02:00Gutting printers for steppersImmediately after I started drooling at the DIY CNC videos on the 'net, I found two printers in the garbage. What luck! There's the free stepper motors I was hoping for! Or so I thought.<br />
<br />
The models were HP Deskjet 5150 and Deskjet 656C.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiz0yofPE0UZQ2kdrgAW5CPmy93nupxAVOamzUaljhiSUA1ZhWcn9129iBqFzgNUYHZMzmWdM-DIZZMJtYkTJNmkO7x1PMdhLB1BHRLBEzWCIZhWIbYH_3zKF_jnRFl_1OZ7qFw697RzU8/s1600/P1090621+%2528Large%2529+%25282%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiz0yofPE0UZQ2kdrgAW5CPmy93nupxAVOamzUaljhiSUA1ZhWcn9129iBqFzgNUYHZMzmWdM-DIZZMJtYkTJNmkO7x1PMdhLB1BHRLBEzWCIZhWIbYH_3zKF_jnRFl_1OZ7qFw697RzU8/s320/P1090621+%2528Large%2529+%25282%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">HP Deskjet 656C straight outta garbage.</td></tr>
</tbody></table><br />
After all the trouble of carrying them home, I noticed they both had plastic optical guides next to the printhead pulley system. At first I was thinking "why do they need optics to guide steppers?" Then I understood the grave situation. There were no steppers. It seems that HP has found a cheaper way to get their precise printhead movement. They use DC motors with <a href="http://en.wikipedia.org/wiki/Linear_encoder">optical linear encoders</a> to give feedback on the printhead's position.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0d0A6Bummp1qtdmN80A0BAd8j9To3zpwVD4m-gwW-r3nsvedlGeq0gJEQECkFGGTG7lsFBUHFTyA-6J7tYAUfAzIx0Gw5ZVx2xse9Z5vFpDmLRupP8Id78tmJ7bZoJ5V3jDNvL0IlRj0/s1600/P1090625.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="64" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0d0A6Bummp1qtdmN80A0BAd8j9To3zpwVD4m-gwW-r3nsvedlGeq0gJEQECkFGGTG7lsFBUHFTyA-6J7tYAUfAzIx0Gw5ZVx2xse9Z5vFpDmLRupP8Id78tmJ7bZoJ5V3jDNvL0IlRj0/s320/P1090625.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">HP's optical guide for the printhead.</td></tr>
</tbody></table><br />
I decided anyway I would gut the both printers for parts. I would probably be needing them for the mechanical construction.<br />
<br />
You need a torx screwdriver set to open these things. Every screw on these seems to be a <a href="http://en.wikipedia.org/wiki/Torx">torx</a>. I needed at least the T10, T15 and T20 to open the printers.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkCe3kbzoifrqzOTIfkj804PUEv6MgK_TCKGLHhWX8q1pXGt8aaRh-hX9B5hh1eWuH_8afcXPIuBQ814dboVr3rafxu4iYFx91GmFUHsVrfjzbIMXKcxD8mQ4V2ASlREvUlfI1pUHsKjE/s1600/P1090645.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="196" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkCe3kbzoifrqzOTIfkj804PUEv6MgK_TCKGLHhWX8q1pXGt8aaRh-hX9B5hh1eWuH_8afcXPIuBQ814dboVr3rafxu4iYFx91GmFUHsVrfjzbIMXKcxD8mQ4V2ASlREvUlfI1pUHsKjE/s320/P1090645.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">My trusty screwdriver set.</td></tr>
</tbody></table><br />
At this point I want to make it clear that opening printers is MESSY! Be prepared to get ink everywhere.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidxAZxCJQaf1LcJt8EsU-FogRVR5G3_1bgL7Z83OlBXdKbINE_bc65G3QAVwwAu4doJ5r6L9PnUZVrsBAYCM0VH5joNbu0N57XyKVdcSanlVYzzH1kIfOr8bFV43XxIz4d7qp9qy6_TJM/s1600/P1090640+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidxAZxCJQaf1LcJt8EsU-FogRVR5G3_1bgL7Z83OlBXdKbINE_bc65G3QAVwwAu4doJ5r6L9PnUZVrsBAYCM0VH5joNbu0N57XyKVdcSanlVYzzH1kIfOr8bFV43XxIz4d7qp9qy6_TJM/s320/P1090640+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">A partially gutted HP Deskjet 5150.</td></tr>
</tbody></table><br />
I found another optical guide on the Deskjet 5150. It's a <a href="http://en.wikipedia.org/wiki/Rotary_encoder">rotary encoder</a> that gives the printer feedback on the paper feed DC motor's position. Again they have saved on steppers.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhF0bEFM4LIj3w7Qf4Nq_KiBtOXihho3iuy6x40I_I9VYEGQZWl3bmlHwc5qa2BYH-9PpQ3D_FjCyHotbPBkD2jk0bDZdeWceshHOxJe2livJUl6oqQHuQp2c5xEfpCYDhDjpY2wjTEz2I/s1600/P1090691+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhF0bEFM4LIj3w7Qf4Nq_KiBtOXihho3iuy6x40I_I9VYEGQZWl3bmlHwc5qa2BYH-9PpQ3D_FjCyHotbPBkD2jk0bDZdeWceshHOxJe2livJUl6oqQHuQp2c5xEfpCYDhDjpY2wjTEz2I/s320/P1090691+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">An optical rotary encoder.</td></tr>
</tbody></table>And then I found my first stepper! On the Deskjet 656C they still use a proper stepper for the paper feed motor. I need one more for the build.<br />
<br />
<div class="separator" style="clear: both; text-align: center;"></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrVHQdHDKafCKxjNi1sBoXSfFNEEuhvVa9Lr_KYCOCqG8-05HY9DPDZcfGaozTPMZj-PTPM9xx5k__hsmF6a58LxVpZMSEOySyRQNZRhdNYDAEMkNf8UEuPHx63zIYt8WQJJ2-6NTqbEs/s1600/P1090629+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrVHQdHDKafCKxjNi1sBoXSfFNEEuhvVa9Lr_KYCOCqG8-05HY9DPDZcfGaozTPMZj-PTPM9xx5k__hsmF6a58LxVpZMSEOySyRQNZRhdNYDAEMkNf8UEuPHx63zIYt8WQJJ2-6NTqbEs/s320/P1090629+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">The first stepper motor I found!</td></tr>
</tbody></table><br />
<div style="margin: 0px;"><br />
</div><div style="margin: 0px;">I took out the stepper and googled it's model PML55L-048-HPG9. <a href="http://www.motors.wrobots.com/PM55L-048-HPG9.php">The first search result</a> gave it's data:</div><div style="margin: 0px;">Nominal voltage: 24V, Steps / revolution: 48, Step size: 7.5 degrees. Everything I need to drive it, I quess! I've never used stepper motors in my projects before...</div><div style="margin: 0px;"><br />
</div><div class="separator" style="clear: both; text-align: center;"></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLLqgEJAcsv8FmJGsp7265cJcZ7IdLFt8z4AaT5j536NOlVHEpiQDB43Crh6kIrr8ktTHd8IiAZ-OTCPhMeHt-dLXlY0RSg1ihkyxqUjOO3sktBHrW69uB86KmftAgyzgp_Kk3ZzprXKU/s1600/P1090746.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="216" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLLqgEJAcsv8FmJGsp7265cJcZ7IdLFt8z4AaT5j536NOlVHEpiQDB43Crh6kIrr8ktTHd8IiAZ-OTCPhMeHt-dLXlY0RSg1ihkyxqUjOO3sktBHrW69uB86KmftAgyzgp_Kk3ZzprXKU/s320/P1090746.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">This one will come in handy.</td></tr>
</tbody></table><div style="margin: 0px;"><br />
</div><div style="margin: 0px;">Even without google it's easy to distinguish a stepper motor from a DC motor. Stepper motors have 3-6 wires on them while DC motors have only 2. For more info on the various motor types, here's a great tutorial page: <a href="http://www.cs.uiowa.edu/%7Ejones/step/types.html">Jones on Stepping Motor Types.</a></div><br />
So here's the conclusion: if you're looking for steppers: Deskjet 5150's got zero, 656C has one.<br />
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But the Deskjet 5150 sported something else I'm sure I'll find useful: a screw-mountable metal rod that the laser head can travel on.<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7DJzpvSc9PQz6IW8eci022rsLIHh2QMX44t1oCHNEfNvwhDzbpq-eVO_XZAcFjOgNMMh4ABG9j1mE0KnSvQ2q7RYIroE25BnzuCMMs4FqAsMcO8eeA0uanPANT0lVukk8ZuW6-wU5ZSA/s1600/P1090711.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="103" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7DJzpvSc9PQz6IW8eci022rsLIHh2QMX44t1oCHNEfNvwhDzbpq-eVO_XZAcFjOgNMMh4ABG9j1mE0KnSvQ2q7RYIroE25BnzuCMMs4FqAsMcO8eeA0uanPANT0lVukk8ZuW6-wU5ZSA/s320/P1090711.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">I'm planning to use this rod in the CNC build since it's got some convenient screw holes.</td></tr>
</tbody></table><br />
<div class="separator" style="clear: both; text-align: center;"></div>OK, that's it for today! At least some progress.Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-8257334490888027507.post-40753117465504756212010-12-20T20:28:00.087+02:002010-12-21T22:47:16.386+02:00Gutting a DVD burner for it's laser<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgY0s2o98pucoQ_GguHmpGpcOokZf8hpJcuCOBkLQreK3SvhplzE5J_I0PlxAv2ZzwWQ8MiFyzDwLbrb9eilEICYgN2y_usrD1NKAkjTZcdBalgEbGo2pSFgbliQT7-tpbjwqu8oXxmqM4/s1600/P1090744+%2528Large%2529.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjq46X411XTrn7PLZttFklK-gCN7MLhchcwoJdHxs_9JY4xseBw6Sw_8iyelEPpzUw4DuThjTpzDUIw3u7OFAIFX7oGkjnozRnsgYtXP4mfRmtiDHa0J7fdA7sIHRP1IOpXD2f4AhPBYK0/s1600/P1090736+%2528Large%2529.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhazmgx6-N7GjG-VZ890WWN5brnwfzLASvxRtPA6u-hEAtuDhqAeAvn_eZpxM5nQ6PU0AjWmRqOspm67w4Vhp3L4Nr_uwvBSUZUa6I8EP_ENU3Iphr6CWMNmt4JFF8QES_6g-SX96NtUl4/s1600/P1090730+%2528Large%2529.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"></a></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPFJtzRjoRrdvmqNIN9HxnvlZaYIEGOV-UduEUIV0E9GK_Ukj-IgsTN4l4AVIIkaiac8Xoh5SuMCdpLQUBdmd4UJYIGPsGikP98RncyacNPser4jF7acfa6rCU5RN8yvdNUHqSxXR-Ihw/s1600/P1090669.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="210" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjPFJtzRjoRrdvmqNIN9HxnvlZaYIEGOV-UduEUIV0E9GK_Ukj-IgsTN4l4AVIIkaiac8Xoh5SuMCdpLQUBdmd4UJYIGPsGikP98RncyacNPser4jF7acfa6rCU5RN8yvdNUHqSxXR-Ihw/s320/P1090669.JPG" width="320" /></a></div><br />
There are a ton of instructions on the net about ripping laser diodes out of old 16x DVD burners. Well, here's mine.<br />
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Quite soon after starting this project, I found exactly what I needed: a 16X DVD burner from an old computer in the electric waste. Here's the poor thing before the operation. It's an LG GCC-4480B CD-RW/DVD ROM drive.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6uNpk2HT5QzXjQgOAUYDG_9CZA1EBpUycIGnYTEkWUubz-C-6izW5ofL-dmz2SmZEK1dNQxfYgoAhEwSnr3SBUCWKJNXU8SH9O_b0opasP4hutd8wghpzDmWeC1Mf0ClRgMU4FM6QAwM/s1600/P1090715+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg6uNpk2HT5QzXjQgOAUYDG_9CZA1EBpUycIGnYTEkWUubz-C-6izW5ofL-dmz2SmZEK1dNQxfYgoAhEwSnr3SBUCWKJNXU8SH9O_b0opasP4hutd8wghpzDmWeC1Mf0ClRgMU4FM6QAwM/s320/P1090715+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">The unsuspecting DVD burner before meeting it's fate.</td></tr>
</tbody></table><br />
And here are the tools I need. Let's get to work.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRtUQxWRZrSwRy3xmSHJZg3dxLdp2mQ48K2Idgvq-wQdD5vr_boHnzwsuXOt4wHXTwN_E1GhRYkHnJTWLbCoHImtuHlqiWhVFTLSveSyW2rw2aNLXiHOqymLrlqsa8PqpTazU2aT3ovzs/s1600/P1090671+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRtUQxWRZrSwRy3xmSHJZg3dxLdp2mQ48K2Idgvq-wQdD5vr_boHnzwsuXOt4wHXTwN_E1GhRYkHnJTWLbCoHImtuHlqiWhVFTLSveSyW2rw2aNLXiHOqymLrlqsa8PqpTazU2aT3ovzs/s320/P1090671+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">With these I was able to get everything out.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8hdfDEP2dNGPgp__MT8-DmY50GTXicS8iQyu-hyJCLWN-E6ja5Pg1zxF85fJbjvqkNtpjZp2KISNkAzjRKdJodhf4mpJflLnmbwOLOqUTCoAAiN1uvosOWgschGLcZKsidWQg49mBNx0/s1600/P1090718+%2528Large%2529.JPG" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8hdfDEP2dNGPgp__MT8-DmY50GTXicS8iQyu-hyJCLWN-E6ja5Pg1zxF85fJbjvqkNtpjZp2KISNkAzjRKdJodhf4mpJflLnmbwOLOqUTCoAAiN1uvosOWgschGLcZKsidWQg49mBNx0/s320/P1090718+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Warranty's void now.</td></tr>
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</tbody></table><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4QUlfOKSth3YpQjEJXVgVKGyRYAAezQCYMgk7DTmliDJf2Aps3EJoRpwod7XRjRRKEJbQ68yqIMEYfwXghQuofvpVAl-o-yLauPs8So1J2DSQpvRtgxdwEDsm-YZ4oeQmEZgWb2vYVpQ/s1600/P1090720+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4QUlfOKSth3YpQjEJXVgVKGyRYAAezQCYMgk7DTmliDJf2Aps3EJoRpwod7XRjRRKEJbQ68yqIMEYfwXghQuofvpVAl-o-yLauPs8So1J2DSQpvRtgxdwEDsm-YZ4oeQmEZgWb2vYVpQ/s320/P1090720+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Pull or cut the cabling to get the PCB out of the way.</td></tr>
</tbody></table><div style="text-align: center;"></div><div style="text-align: center;"></div><div style="text-align: center;"></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXmb8ECbTbKwxUNdw3BlZT_ew4lemalhEpPZclq6MiIL7vSeYoce8qATK0P44WwmExk_69E3vbZJPZMJD7kOZP9JYUi3J0F2fFLQTsmRZX3Aw3W758H4Kl8ZggkCnvHVZcBa62NW0mvfQ/s1600/P1090726+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXmb8ECbTbKwxUNdw3BlZT_ew4lemalhEpPZclq6MiIL7vSeYoce8qATK0P44WwmExk_69E3vbZJPZMJD7kOZP9JYUi3J0F2fFLQTsmRZX3Aw3W758H4Kl8ZggkCnvHVZcBa62NW0mvfQ/s320/P1090726+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">View from top. Laser lens is visible.</td></tr>
</tbody></table><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0b-5lWprfVTVUshkuJxD4tlFLTO5hwzd31Aopek-BkDCGg1QwboZ90Ftj6yl1a4_sToeM2qEv8GFejGEO3m0O5a8KbaifPQdc7HRNaV756CsPfApSSEOv1UDZueOj0FdT-rdyn397sv0/s1600/P1090728+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0b-5lWprfVTVUshkuJxD4tlFLTO5hwzd31Aopek-BkDCGg1QwboZ90Ftj6yl1a4_sToeM2qEv8GFejGEO3m0O5a8KbaifPQdc7HRNaV756CsPfApSSEOv1UDZueOj0FdT-rdyn397sv0/s320/P1090728+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">View from bottom. Take out the screws connecting the rails of the laser module.</td></tr>
</tbody></table><div style="text-align: center;"><br />
</div><br />
Inside the top cover I found this cool little ring-shaped magnet. It's quite powerful for it's size, maybe a Neodymium magnet. It found a new home on my fridge.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhktvvLkpMqMDhOUVfgEReVjFGPhamD5ENvS9dwv4QSKGjhoOEqCkryMMWxCWa29y8IVwGC_DiQVnClObudKc5ispkiLiWeKFF6h864iWOF33emXfOm1d3p4PKOThonM2JIs1d_mqZRgWc/s1600/P1090724+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhktvvLkpMqMDhOUVfgEReVjFGPhamD5ENvS9dwv4QSKGjhoOEqCkryMMWxCWa29y8IVwGC_DiQVnClObudKc5ispkiLiWeKFF6h864iWOF33emXfOm1d3p4PKOThonM2JIs1d_mqZRgWc/s320/P1090724+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">The magnet.</td></tr>
</tbody></table>And finally, here's the beef. The laser module with it's laser diodes.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhazmgx6-N7GjG-VZ890WWN5brnwfzLASvxRtPA6u-hEAtuDhqAeAvn_eZpxM5nQ6PU0AjWmRqOspm67w4Vhp3L4Nr_uwvBSUZUa6I8EP_ENU3Iphr6CWMNmt4JFF8QES_6g-SX96NtUl4/s1600/P1090730+%2528Large%2529.JPG" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhazmgx6-N7GjG-VZ890WWN5brnwfzLASvxRtPA6u-hEAtuDhqAeAvn_eZpxM5nQ6PU0AjWmRqOspm67w4Vhp3L4Nr_uwvBSUZUa6I8EP_ENU3Iphr6CWMNmt4JFF8QES_6g-SX96NtUl4/s320/P1090730+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">The laser module. A lens is seen on the top, while the laser diodes are hidden in the sides.</td><td class="tr-caption" style="text-align: center;"><br />
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</tbody></table><br />
When trying to open the module, bad luck struck.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJ4BkOpMHtN-ejvPSnVy0qZcEaS4dkjkG1NCsIGmCTucRRk8KDNAgPb_qR_6M2JOo-T5_sVwlNrJrw3OCK5NDlrrGu8aVNzk38fqqDUjKmAyJI7i24Q4weNlUSI2RHAKO1zIJy0ryq69g/s1600/P1090678+%2528Large%2529.JPG" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJ4BkOpMHtN-ejvPSnVy0qZcEaS4dkjkG1NCsIGmCTucRRk8KDNAgPb_qR_6M2JOo-T5_sVwlNrJrw3OCK5NDlrrGu8aVNzk38fqqDUjKmAyJI7i24Q4weNlUSI2RHAKO1zIJy0ryq69g/s320/P1090678+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">This is what you get when you save on your screwdrivers.</td></tr>
</tbody></table><div class="separator" style="clear: both; text-align: center;"></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjq46X411XTrn7PLZttFklK-gCN7MLhchcwoJdHxs_9JY4xseBw6Sw_8iyelEPpzUw4DuThjTpzDUIw3u7OFAIFX7oGkjnozRnsgYtXP4mfRmtiDHa0J7fdA7sIHRP1IOpXD2f4AhPBYK0/s1600/P1090736+%2528Large%2529.JPG" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjq46X411XTrn7PLZttFklK-gCN7MLhchcwoJdHxs_9JY4xseBw6Sw_8iyelEPpzUw4DuThjTpzDUIw3u7OFAIFX7oGkjnozRnsgYtXP4mfRmtiDHa0J7fdA7sIHRP1IOpXD2f4AhPBYK0/s320/P1090736+%2528Large%2529.JPG" width="320" /> </a></td><td style="text-align: center;"></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Side view of the laser module. The red 650nm laser is there!</td><td class="tr-caption" style="text-align: center;"><br />
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</tbody></table><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhX12CYBCUbfRupNVbCJR1UTXpOadKmxwHNMT9_D4umSwt07bOOR0lChs-MwV_75pZvHlJq_zS9HjtjEXfoX0RqAynGQ_xiwSsHG5yjhizh7UmN2GxkdB-WpuZEBC8VCDBtabOaHOkdbV8/s1600/P1090681.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"> </a></div>The red laser I'm looking for is in the picture above. You can see three leads coming out of a orange PCB, two of which are soldered together. That is the negative terminal.<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjOZEqZGd0u2Oa4UgIUcjKp3a6PsEG67dG18_nMGMlhmsf6ZZKP8nuoLbB73LHGOe8KOlbWYLB2vIE0sVrT1wXWFLaM0pjSQSxorsLszmUCynnv6fc0eAPSIqRnc7HXeQJQomo1xyP_wJw/s1600/P1090737+%2528Large%2529.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjOZEqZGd0u2Oa4UgIUcjKp3a6PsEG67dG18_nMGMlhmsf6ZZKP8nuoLbB73LHGOe8KOlbWYLB2vIE0sVrT1wXWFLaM0pjSQSxorsLszmUCynnv6fc0eAPSIqRnc7HXeQJQomo1xyP_wJw/s320/P1090737+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">And here is the infrared CD laser diode. I managed to wreck this one.</td></tr>
</tbody></table>In the above picture, the IR laser diode is hiding beneath the little green PCB on the side of the module.<br />
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The laser module has two laser diodes (LD). One is for reading CDs and one for DVDs AFAIK. The CD laser is infrared and invisible and the DVD laser is red at 650nm. I'm looking for the DVD one. The infrared one is more dangerous since you can't see the beam, and still it can blind you.<br />
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Getting the laser diodes out of the module proved out to be the hardest part. The CD laser diode wouldn't come out and got broken. Luckily, I got the 650nm laser diode out mostly unharmed! I hope it works!<br />
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<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgY0s2o98pucoQ_GguHmpGpcOokZf8hpJcuCOBkLQreK3SvhplzE5J_I0PlxAv2ZzwWQ8MiFyzDwLbrb9eilEICYgN2y_usrD1NKAkjTZcdBalgEbGo2pSFgbliQT7-tpbjwqu8oXxmqM4/s1600/P1090744+%2528Large%2529.JPG" style="margin-left: auto; margin-right: auto;"><img border="0" height="180" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgY0s2o98pucoQ_GguHmpGpcOokZf8hpJcuCOBkLQreK3SvhplzE5J_I0PlxAv2ZzwWQ8MiFyzDwLbrb9eilEICYgN2y_usrD1NKAkjTZcdBalgEbGo2pSFgbliQT7-tpbjwqu8oXxmqM4/s320/P1090744+%2528Large%2529.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Finally, there it is!</td><td class="tr-caption" style="text-align: center;"><br />
</td><td class="tr-caption" style="text-align: center;"></td></tr>
</tbody></table><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"></td></tr>
</tbody></table>Next it's time to build a driver circuit to try this one out!<br />
<br />
Here's some other nice pages about the DVD lasers:<br />
<a href="http://planetstephanie.net/hi-tech-fun/lasers/dvd-laser/">Planetstephanie - DVD laser</a><br />
<a href="http://www.instructables.com/id/Laser-Flashlight-Hack%21%21/">Instructables - Laser Flashlight Hack</a> <br />
<a href="http://showsyouhow.blogspot.com/2007/12/diy-dvd-burner-laser-pointer-proper-way_18.html%20">Showyoushowhow - DIY DVD burner laser pointer the right way</a><br />
<a href="http://www.repairfaq.org/sam/laserdio.htm">Sam's Laser FAQ - HUGE amount of info on laser diodes</a>Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-8257334490888027507.post-6322305798532269452010-12-20T19:31:00.010+02:002010-12-21T22:48:24.620+02:00Parts listHere's a list of the parts I'm planning to use.<br />
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<b>2 stepper motors for XY control</b> (0€, from old printers / scanners)<br />
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<b>Mechanical structure for the XY table</b> (0€, I'm planning to use printer & scanner parts)<br />
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<b>Red laser diode 150mW - 250mW 650nm</b> (0€, from an old 16X DVD burner)<br />
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<b>Laser module with focusable lens</b> ($9.50 from <a href="http://aixiz.com/">AiXiz</a>)<br />
This is needed to collimate the laser beam. I don't know what that means either, I just read it off some other tutorial page! I ordered the 650nm 5.0mW 12x30mm module with a glass lens as an accessory. Normally they come with plastic lenses. Sounds bad having a plastic lens on an engraving machine that's supposed to burn stuff.<br />
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<b>Laser diode driver circuit </b>(?€, parts list later)<br />
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<b><a href="http://www.arduino.cc/">Arduino</a></b> (20€ from your nearest Arduino dealer)<br />
To control the stepper motors. I will use Arduino for this project because of the ease of use and available libraries. I have one already.<br />
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<b><a href="http://www.ladyada.net/make/mshield/index.html">Adafruit motor shield</a></b> for Arduino (?€ from nearest Adafruit dealer)<br />
This one is needed to power the motors. Arduino itself cannot power the motors, the motors need another power supply and some driving circuitry. I want to get engraving as fast as possible so I don't want to waste time making my own PCBs. This kit seems perfect for me.<br />
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<b>Computer</b> to send control data to Arduino.<br />
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<b>Control program </b>on the computer that eventually controls the whole thing<br />
I'll code it when the hardware is ready. <br />
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<b>Cables, screws, tools, power supplies, whatever. </b><br />
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This list will be updated later when things clear up.Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-8257334490888027507.post-78946130077022388052010-12-20T16:48:00.001+02:002023-11-16T07:49:33.316+02:00The goal (video)<iframe width="560" height="315" src="https://www.youtube.com/embed/sr5U5YlE9Zc?si=d-yj0rHa-RVo4lu9" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
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<br />
Here's a video of what I want to accomplish. The CNC should also be able to cut through some thin plastic. I want to be able to engrave items (leather / plastic / wood / etc) and create some stencils with it eventually. I'm planning to make the device much smaller than the one in this video, though.<br />
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For dummies: It's a Do-It-Yourself (DIY) Computer Numerical Controlled (CNC) Laser Engraving Machine.Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-8257334490888027507.post-6098577578580046062010-12-20T16:41:00.000+02:002010-12-21T00:45:03.106+02:00First postHi.<br />
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This blog is about a Do-It-Yourself CNC Laser engraver project I'm currently working on. Later on I might write also about some other things.<br />
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I'm a Finnish hacker, 26 years old at the time of this writing. For those who got scared: with hacker I don't mean an internet criminal. It just means I like to repurpose electronic devices or use their parts to make something else. You can just say 'nerd' if you will. <br />
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My plan is to build a laser engraving machine that is made mostly from recycled parts and to document it in case someone else is interested.<br />
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I'm planning to make the blog a bit like a manual / tutorial, so old posts will probably get edited along the way as I get more knowledge & have more time to write.<br />
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Currently I have no idea how often I will get to update this blog and when the thing is going to be ready. But like they say: live for the journey, not the destination... No, I'm just kidding. Fucking hippies.<br />
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One thing that makes the project very interesting for me is that I have no previous experience with lasers, or any mechanical builds. I have worked with electronics for years now and I'm fairly good at programming, but I'm sceptical expecially on how good mechanical build I will be able to pull off.<br />
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What sets this CNC build apart from the many others you can find from Google is that I don't have access to any wood/metalworks equipment. I have this crazy plan to build the whole thing out of garbage. Time will tell if I succeed in it, or if I eventually decide to get some custom parts.<br />
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So, this is what this blog is about. Stay tuned. Meanwhile I'll go bust open some electronic garbage.<br />
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ZFUnknownnoreply@blogger.com0