In this video i am showing how you can create your own laser engraver module. I used this laser diode module which is 5mW-650nm because i needed its housing. You can get it here:
http://s.click.aliexpress.com/e/2vjeEun
I took out laser diode from a scrap DVD rom/burner. It had real powerful laser but i see that it worked only on 300mA and the voltage i provided to test it was only 3.7v.
I used its housing not just to enclose my engraver diode (what i salvaged from DVD rom) but to make it focusable. Yes that module (5mW-650nm) has adjustable lens that was ideal to use with the DVD laser diode. But the process is extreme dangerous so wear protection glasses that are specially made for lasers.
DVD rom has two diode. Mostly the diode that is covered with aluminum is the diode you need. That aluminum actually works as a heatsink for the DVD laser. But as we need just the diode so we need to cut out the aluminum in order to extract the laser diode.
I after dissembling the laser module (5mW-650nm) inserted one that i took out from DVD rom.
I showed every process in the video. The original laser module has a driver to keep the diode safe that had two smd transistors and some resistors. I didn't build a driver to drive the laser because i was using my Lab bench power supply.
If you're interested in building that adjustable Lab bench power supply completely adjustable current limiting then watch this tutorial (Include Schematic, PCB Layout):
https://youtu.be/17MWw2BraXQ
I finally after making adjustment and testing (what you can see in this video too) i finally got success to engrave on paper with laser. Then i also showed that i burnt the matchstick. I think its a best DIY laser what everyone can build.
I may use this diy mini but powerful laser engraver module with my arduino mini CNC plotter. If you're interested in watching and building it take a look here(Schematic, Source Code & PCB Layout):
https://youtu.be/ny-i6ntAMCE
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