Search results

Quick, possibly stupid question. I've been working on a LiDAR project and I need to either build or buy a driver capable of driving a LD with pulse widths near a few nS. I have found a driver that is capable of that however it has a drive voltage of 50-200V with a current range of 6-20A (I can...

So I recently built the strongest laser I have ever made, and have ran into a problem. Everything went together fine, and after a 5 second "on" to test, I took out the batteries to test current draw to gauge the life time of one charge. Right when I took off the tail cap I smelled the all to...

So alongside with lasers and general electronics, ive been getting into another hobby, SDR. Basically SDR, for those who dont know, is software defined radio that allows you to tune into any frequency within range of the tuner. In my case i use a RTL-SDR. Anyways, i just got done looking over a...

So in the middle of building my engraver, I wondered how safe it was to pulse my LD driver. I know that laser diodes are pulsed themselves in optical drives and obviously rarely any damage occurs. But the driver they use in optical drives are meant to be pulsed. So it's not the diode I'm...

I have noticed that since I had built my 1 watt, I can cut things relatively easy. So I was wondering why don't I make a laser engraver/cutter? I have made a 3d printer in the past and have decided to tear it apart and use the electronics to make the engraver. I'll just buy a kit then for a new...

Hi, Sorry if this is a noob question, but this may be a simple question with a simple answer but I cant seem to find the answer. Ive been an electronics hobbyist for around 8 years (lasers for around 3 years) and have not actually messed around with constant current supplies :thinking...

Hey everyone, So I have built my 1 Watt laser, and have seen that on laser pointer saftey that handheld class IV lasers are legal so long as they have the required safety features. If im not mistaking, most home built lasers have no safety features, including my of course (just a simple rear...

So I can get perfectly good temperature reading from a TMP36 temperature sensor (its in a small TO-92 package). And I noticed that most LMPs go by the heat generated right? So that makes me wonder if I can use the TMP36 to sense heat and get the mW off that. The only problem is, I dont know...

Hey everyone, So I've been messing around with lasers for only about 2-3 years and i have noticed that on some of my diodes i get different patterns. I understand that on 445nm lasers that the output is rectangular with bars, and 650nm have a nice circular output. But sometimes on the diodes I...

Hey everyone, So I have found my new website for getting laser parts called survivallaser.com and as I was going through their website, I noticed that there was a separate site for people in the US. I went there and noticed that there were no longer diodes or complete lasers. Then I realized...

Hi all, I was wondering how legal it is to locally sell a like within a town not shipping it anywhere. Im asking this because im thinking about selling a 300mW red 650nm im made recently, to a friend. We've been friends since elementary school and he's responsible enough to trust him not be...

This is sort of out of the blue, but I have to say how impressed I am about this red laser diode (RLD65PZB5) I say its hardy because for one I'm direct driving this puppy. I'm over currenting maybe 50-100mA off of two AAA in series directly to the diode. I don't have my multimeter with me to...

Hey guys, i was wondering if you could help me determine if the driver I use is defective. Story: I bought 3 laser diodes from diy-lasers.com and they sent me 5 and charged me for the 3 then I bought a little 4 dollar driver. So there was a chance that there could be problems. Anyway I...

hey guys this is my first post, i need your help BADLY. i recently bought a 150mw 405nm laser that has adjustable focus that arrived today, and it got hot enough to melt plastic, light matches, pop balloons, etc. but after about a bit of fooling around the power of the laser seemed to drop...