All the pins on the JP-33 header have full continuity with ground only when 5V is applied to the board (with & without the Dc-Dc converter). I've been having massive troubles with the board controlling the laser ( can't get it to fire the laser at all) and am starting to think my board may be faulty. Any ideas?
Which is JP33 ?
It's the header with a ground pin, p2.7, p2.4, p2.5, p2.6. I'm building a laser cutter with a TH TL WP G IN 5V power supply but cannot for the life of me get the laser to fire through PWM. Here's what I've done:
Since I'm having issues with p2.5, I ran P3.25, a ground, and 3.3V through a level shifter but this won't fire the laser. I've only got the laser to fire through a test switch (alternatively through an active low switch module) between TL & G. What's the best way to get help on this? Should I post up my configuration & wiring diagram?
Unfortunately the documentation is quite sparse for the PSU. It did make sense to me that TL needed to be enabled but I was a bit confused because the laser cutter guide said you only need a PWM signal and a ground.
How does one properly enable TL? When I attempted this with an active low switch module run through the shift converter, the commands either turned the laser on at 100% power, or turned it off. G0, G1, S, all had no effect with the module effectively acting as a test switch.