I guess we beat this to death…:)!
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So, I integrated everything to the same power supply and it stopped working. The laser driver board only works when it’s on its own pretty supply. Any ideas on how to get around that, and why it’s not working? My assumption would be that sharing a ground somehow changes the voltage of the signal, but I have no clue.
Scratch that, I tested the pwm signal and it’s still 5v. No clue why this is happening