Used an arduino nano to drive display and show the power level off of the laser power potentiometer which gave off 0-5v depending on position 0-100% so was easy to integrate.
Also added a Door Sensor to disable laser when hatch open, and read the power through the Safety switch to display when the safety switch is enabled.
Added a simple Minute timer with reset button in case ever want to charge or limit based on time used.
(in random order)
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