So Ive been trying to figure out why I fried 2 laser diodes, when I though I was doing everything correctly. Im using a badpip driver with a 12v psu.
So I hook a multi meter to the driver output to adjust current but once I set a current, the current reading steadily drops and keeps dropping. If I turn off the TTL 5v, then turn back on the current setting will be over what I started with. The driver is heat sinked and I use a 5v psu for the TTL. I do work on an anti static mat with wrist strap and short the driver leads before connecting the diode.