- Joined
- Jan 10, 2014
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- 15
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Hi everyone! After having some odd problems with my PHR-805T laser diode and Styropyro's 3$ laser driver build, I thought I would ask for some help (I need it badly DX). I began by using 8 AAs, using the positive wire to go to a switch. I then attached a positive to the other side of the switch, and attached that to the Vin on the 317. I then decided I wanted 125mA going to my diode, so I attached a 10 ohm resistor across the Vout and Adj pins. After that, I attached a positive wire to the positive pin on the diode. The negative pin and negative wire from the 8 AAs were then connected. Instead of getting 125mA, I got only 47. I tried using lower value resistors, but the current didn't change. So, now I would like to use a different laser diode with an LM317T driver, but I do not know how to get started. Please teach me o masters of the art of circuitry! I would like to know which diode I should use for my first burning laser, and how to build this gosh darn driver. Thanks!