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Anytime someone asks how to make their own laser driver or how to build a laser This Link gets passed along with this image: But I think there's a bit of a flaw with it, when the diode is placed where it is inserting the batteries backwards will short and fry the LM317, and would still most...

I built this with the intention to be the first to make a spirograph with five motors, as I had not seen any with more than 4 at the time. That was about a year ago and I do not know if I am the first to make one with 5 motors anymore. As I have also found out more than 4 motors is pointless...

Hello LPF! I got my first "real" laser today and I can already see the money pouring out of my pockets for more! Big thanks to swimminsurfer256 for my greenie I got on his ebay listing for only 12 dollars, It is unbelievably brighter than those cheapy .5 mW red things which I own many of...