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I hope this isn't too boring, but I enjoy building these things, just thought someone might want to see another person's approach to building a laser from the GB diodes and simple parts. After building one laser in a Radio Shack battery holder, I thought it was a pretty good host - easier than...

Death Angel- That would drive me nuts - I'd have to find out what happened! Good luck, again, I know how it feels to put all that time into digging out the diode and wind up with a dud. Keep at it - there has to be a logical reason. Rob

A good source for .1 ohm precision resistors is a blown out Bass amp for a car. Usually they are used to balance 6 or 8 Mosfets in the output stage. I save old junk - it's amazing what you can pull from it! Rob

Death Angel- I didn't realize the power supply was fixed - no controls. I don't know your level of knowledge of electronics, and I certainly don't want to insult you in any way! But, are you sure the LM317 circuit is wired correctly? How are you measuring the current to the diode? Ideally, you...

I learned the hard way to use batteries to test / power up laser diodes. Even a good lab-grade power supply can output spikes when turned on, and if the voltage or current adjustment pots in the supply are old or dirty, they can create all sorts of spikes that will kill diodes. The only diodes I...

Yeah, the beam is horrible, but it's hot. It's from a DVD writer that failed and I had to replace. The enclosure is Radio Shack 270-408 "AA" Battery Holder - Enclosed. The "Elly" driver board has to be slightly trimmed to fit, held in place with double-stick foam tape. Very simple, small, works...

Well, I had this diode from a DVD burner that has a miserable beam (another post), and didn't want to waste a good flashlight to mount it in. I'll put my good diodes from SenKat in a suitable enclosure when I have time. So, I found a 2AA plastic battery case at Radio Shack and thought it may...

Re: Understanding the simplicity of Daedal's circu I don't know if this post belongs here, but it's about SenKat's diodes and Daedal's circuit, so I guess it fits. I'm still looking for a host flashlight ( I have a few, but I'm reluctant to destroy them!) to put this thing in. Trying to keep...

Interesting! I may have to rig something up to spin it like you say! I'm assuming that this is why the drive failed in the field - when I got it back the only thought on my mind was to tear it down! Thanks Greg- Rob

I don't know why, but the board called ma a stupid spammer!

I had a return of a defective DVD writer, an LG GSA-H42N. It had a standard closed LD with a window. I put it in a Aixiz holder with a glass lens and the resulting beam was horrible - a line with 2 dots as can be seen in the rather poor photo. I tried a different lens, cleaned the LD window with...

Ive been toying with a few different current regulated power supplies for the DVD diodes. One thing I've run into is the "overhead" voltage needed by the LM317 - I can't get above 225mA, regardless of resistor values when using 4 NiMH cells (4.8V). I believe this is due to the voltage drop in...

Re: NEW Group buy for Sony 16X dvd burner diodes.. Thanks Greg! I missed the last GB - PP sent for 2 for this new buy. Gotta mount something in those metal / glass lens housings I have sitting empty! Rob

I put together a DVD writer diode, Aixiz brass holder and a constant current power supply (LM317) like most everyone here has. The momentary button supplies 200mA to the diode, the slide switch provides 100mA for aligning, longer running, etc., when I don't need to burn something. Works great...

Well, I'd like to wish you a happy birthday too! Only 40? Just a baby... I've got 15 years on you! Good to see you around again (nobody will understand that). Rob