The set-up :
- followed this article as a base
- with the following stuff : an old PC-PSU, a laser-diode from DVD Burner, an adjustable voltage regulator (LM317T), a 100ohm potentiometer, 2x 1N4001 diodes, a 47µF capacitor, some wires, thermic pasta, and a heat sink.
DVD-burner cover :
soldering details :
the laser-diode case :
Now, some data :
Circuit Input : 5V
At the laser diode poles : from 2.0 to 2.4 V (depend on the potentiometer setting )
a small video of the working circuit :
details :
the laser burning the surface :
now passing through the plastic sheet :
