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maybe it has something to do with this. I havnt touched it though. I'm measuring 2.93V (down from the battery's 2.98V today) from the positive contact inside the dorcy to the negative contact of the battery with the bottom of the host removed. (I get my full 2.98V when I put the battery on the...

The problem is, I'm not running any of these tests with load, I'm simply taking measurements with a DMM straight from the battery, then straight from the case with the battery inside and the power turned on. I dont have anything else hooked up to it, and I'm still losing that much, im curious...

Yes, I bought some rechargeables at radioshack today. it measures 3.38v, but goes down (seemingly impossibly) to 2.18v when in the host. I'm measuring the potential without load, would that make a difference? these drops seem extremely high, and wont let my flexdrive function

I recently built a laser with a PHR diode running at 125mA, in a Dorcy Jr. host. I had a whole bunch of problems with it (as evidenced here: http://laserpointerforums.com/f38/help-w-broken-phr-pointer-42442.html) but I think i've figured out that the driver isnt getting enough voltage even...

sorry to double post, but I did some more testing I went out and grabbed a DMM, my battery was reading 2.95V across it. I guess it has to be the driver at fault, I cant think of anything else that could be wrong. While I was at radioshack I was pleased to find that they sold a charger with two...

OK, so today I tried resoldering the three connections on the flexdrive, put it all together, crossed my fingers and... nothing, it does the exact same thing. One interesting thing to note however, it now seems to make a quiet high pitched whirring or squeaking noise whenever its turned on. I...

so... do you think I would have any slim odds with simply desoldering the three connections and resoldering them? would it be worth doing do you think? hmm EDIT: it also sounds like its a good move to order some rechargeable CR123 batteries, but I'd rather not wait 3 months from DX, are there...

but could it have really just randomly developed a short, after it worked perfectly for a time before? I'm looking all the connections over again and it looks fine, I guess I have to test

yours worked after resoldering all the connections? I checked them all, I dont see any shorts...

I just tried the new battery again, I really wish that was the problem but its not. I might pick up a DMM tomorrow, and I'll toss drlava a PM. have you ever had a laser with good batteries behave like this?

I bought it from him, yes, I'll have to get in touch with him. I was hoping to have the laser by this saturday, so hopefully I can figure something out. thanks for your help (I'm a bit of a noob, how exactly would I use a DMM to find the problem, and what do they cost?) @meatball... its REALLY...

it seems like it must be a bad driver, because I know the battery is good. is there anything that can cause the driver to just die like that? if I had a defective one could I get another for free from them? if the diode was broken, I wouldnt be able to get this weak beam right?

no, I know for 100% sure that the other battery I tried was fresh. its not the battery, it has to be something else >.> potatorage, did you have a similar problem?

I ordered the driver preset, but I wasn't able to confirm it. I actually had another battery lying around, and I put it in and the same thing happened... do you think my flexdrive got fried somehow? what could have happened? I just turned it on one time and it started doing this...

I dont have anything to measure voltage, its using the 3v 123 battery... do you think I could have used it up that quickly? how many minutes of continuous operation should that battery last for?

Hello, I just finished my first ever laser build, its a PHR using the flexdrive at 125mA. It worked great for about an hour, but now when I turn it on it flashes the bright purple it used to be, then goes extremely dim and stays dim. Whats wrong? do I need a new battery? (I didnt use it that...

I found these and figured I'd share, its a year old so you might have seen it already: Laser Pizza Cutter | Gadget Lab | Wired.com nerds with too much time are the best

Hi, I'm totally new and just a random guy who likes lasers, and might be interested in building one, but first I was wondering if anyone has made a term glossary or dictionary to help people like me take the very first steps. I'd like precise definitions of what each of these are and what they...

yeah, I wish I had something to compare it to. I was bothered by a bit of a ring around the dot, I knew something was making the light bounce around in there... I extracted a small piece of grass and now its a little better I think... the thing is hella bright though (of course I took the...

hmm, the one khz bought looks exactly like mine... is it possible mine might be stronger than I think? how can I tell?