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Thank you, I know I'm not the only one that burns diodes, but it always hurts. I have been reading this forum for a while before I subscribed, and I have some knowlege about general electronics, that's why I sound like I "have a pretty good start for a noob" :) . I have also ordered a LOC, two...

Yes, indeed now the switch is not an issue, because I tested with a wire to make contact between the host and the battery, and the symptoms are the same. But when I mentioned the switch I wondered if a loose connection could make like a switch that opens and closes very fast (faster than...

Well I have no new batteries to test the laser with, but I don't think they are the main problem, because I measured the current passing through the diode and it is really 700mA. I also tried with another load ( the cree LED that comes with the kit + a resistor), the current is still 700mA, and...

I think heatsinking is quite good because when the laser worked I could feel the host become warm. And don't you trust Jayrob's copper heatsink ? :na: JK I have already unsoldered one pin of the diode to measure the current going through it. I measured a constant 700mA (well I believe it's...

Hi there. I bought a few weeks ago a Jayrob 18500 kit with a microboost set at 700mA and a XJ-A140 from daguin (well, two as I fried one before I received the kit :cryyy: ). The laser worked perfectly until yesterday night. I don't know what happened, but when I fired it I noticed that the...

I think you shouldn't give more than 9V to the driver. Even if it can handle it, as I think it's a linear driver, every unused volt will be wasted and converted into heat. Are you sure you focused the laser properly, as in this video ? The dot must be as small as possible where you want to burn...

How much for the empty torch with flexidrive ? Has it got a heatsink ? Edit: I may also be interested in a tripod and/or a TEC . How much for these ?

Yes you're right but these values were only for the example. When i get the diode i will test which current will be safe (i think it depends much on the diode). Yes on this simulation it's more like ripple, but on some others i did there was a clear spike, that's why i was worried. But again...

It was the output of the driver, but as you said, i tried to change the simulation parameters and it showed a smooth output, without spikes. So i belive i can consider that it was a simulation issue, and that the problem is solved :). Thank you for the idea The problem was that ( before...

Ok so you mean something like that, plus some capas , i belive? (see the attachment)

The switch must be in series with the pot ? ( and not in parallel like in my schematic ?) Sorry if i misunderstand but it sounds weird: if it is in series, if the switch is open, no current can flow, can it ? Thank you

Hi everyone. For the new red burning laser I want to make , I would like (to optimize the life of the diode, and the autonomy of the laser) to make a custom driver that would allow the laser not to be alwaws at full power. For example the driver will output 50mA most of the time, and when I...

The problem is that i don't know what is actually the power of the red diode i have, because it is from an old DVD recorder (connected to a TV, not from a computer), and i have no idea of its speed. And i also wanted to make a custom LM317-based driver, with a few more features, but i will...

Thank you for correcting me. I have edited my post. :whistle: Clément

Hi everyone, I'm Clément, and I live in France. English is not my first language so I apologize for my mistakes. :thanks: I discovered this forum a long time ago ( by watching youtube videos :) ). It helped me a lot, but i am now subscribing because I have a few questions. I like electronics...