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Thanks DTR, I have one of the 1.8W diodes currently running at around 1.2 amps in an NES duckhunt gun. Just measured it on a spectra physics power meter and hit 1.4W. This is mostly due to poor collimation/focusing on my part (I got some silver paint in the way somehow:thinking:). Anyway...

Hello LPF, Here is a long overdue update on how the laser performs. I had to take it apart today, time to conduct real science with it today instead of just burning things, and needed to characterize it before starting my experiment and destroy my sample. I have attached an image of me firing...

Haha that picture is awesome Super Critical. Thanks Jay, your write up made my first electronics/laser project a real breeze. Thanks for the info on batteries. I think my charger works through the balance leads, or we will see, the manual is very vague. I will be making one for a friend...

My new battery came in today, along with my second pair of goggles and a 2s charger. Luckily my charging issue was resolved, 2 cell batteries come with power leads and balance/charge leads already. So I wired it up and got to burning more stuff. Thanks again for looking. Hope you enjoyed it...

Hey LPF, I recently started and completed my first laser build of an NES Zapper outfitted with a 445nm LED. I made my own driver based off of the DDL circuit and am currently running two 3.7v 1s batteries in series, with the driver drawing roughly 1.2 amps. I goofed on the capacity...

So I finally got around to finishing up the laser, and I am pretty happy with how everything turned out. I had a couple of snags during the last day of assembly...I shorted a battery that took 2 weeks to get here! So i ran out to a hobby shop and grabbed the closest thing I could find, a 500...

So I had a pretty busy week with work and school, but I finally found some time to finish up the driver. In my original posts I mentioned I would be using a 10 Ohm resistor and 1k or 100 ohm pot, but I wanted this thing to have some power so I swapped in a 50 ohm pot and 2 1 ohm resistors in...

Hello LPF, Now that the heatsink is done, its time to figure out the circuitry for this laser. As I said my circuit is based on an LM317 voltage regulator. I have attached the schematic as well as an image of my PCB mockup. Once I have the board completed and am certain its working, I will...

Hello again LPF, I was able to get into the machine shop and make use of our lathe for fabricating the heatsink. I just found some scrap aluminum that was roughly 18 mm in diameter and decently long as my stock. Following along with NSL write-up I decided to leave the grooves in the zapper...

Hello LPF, A couple of months ago I was reading through a favorite news site of mine and stumbled across North Street Labs and their modification of a 2W 445nm diode to an original NES Zapper. I thought it would be pretty cool, but thought it to be out of my scope. Well I found a Zapper gun...