my first PHR build

[3zuli]

so few weeks ago I have finished my first PHR laser. It's powered by 1 9V battery, using LM317 driver @ 100mA, output power about 70mW. I used Aixiz module with standart lens. When powered by battery, it burns olny first 3 minutes, after that it's weak. But when powered by power supply, it burns
future plans:
-addnig an external power conector
-rechargable battery
-some heatsink , more power
(-& then try RGB laser)

photos (from left):
1. prototype
2. build
3. comparison with 5mW green & 5mW red
4. inside
5. nice beam shot

 

[Giface]

You're obviously having fun with this stuff - good for you and thanks for the pics..

You're right, a couple of 14500 lithiums would add some serious longevity to your build.

Dave

 

[chipdouglas]

if you get rid of the 9v battery and step up to like 12 you will have a kick ass burner.

 

[3zuli]

ooh I forgot I made it by this guide by styropyro - :thanks: to him...
YouTube - DIY: How to build A Burning Blue/Violet Laser

 

[k1kb0t]

Nice build and good pics, well done. Getting a better power source will help with burning and longevity. Keep us posted to your future build and upgrades.

Jon

 

[cust11]

It is hard for me to tell in the picture, but is that a double safety switch or an either/or situation? Either way, very nice build! I agree with chip, go with 3 14500's or equiv. I think you will like that a little more

-Mike

 

[3zuli]

there are 2 switches - one is switch (ON-OFF) -I can turn it on, put it on the desk & enjoy the beam - and second is only a button - like a normal laser pointer

 

[cust11]

there are 2 switches - one is switch (ON-OFF) -I can turn it on, put it on the desk & enjoy the beam - and second is only a button - like a normal laser pointer

Ahhh, gotcha. That is a really good idea. Great build:yh:

-Mike

 

[3zuli]

Great build:yh:

yes it is... but there is no heatsink... :thinking:

 

[cust11]

yes it is... but there is no heatsink... :thinking:

I don't run a heatsink on my PHR labby. Just a little arctic-cooling MX-2 on the diode and threads (it is an o-like/LSP style module). I don't really have much heat problems. I will note: At 118mA it did not even get warm but yesterday when I cranked it to 131mA it actually starts to build up a little heat.

-Mike

 

[samsomiler]

Wow thats a big driver.. is it DIY?

 

[3zuli]

Wow thats a big driver.. is it DIY?

yes. it's like this http://laserpointerforums.com/attac...de-laser-diode-driver-ld_driver_schematic.jpg . I didn't used SMDs, so it's big. but I don't care about the size... better as 15$ for assembled driver (Lava, rkcstr, FlexDrive etc)