Hi every one ... my first post here I hope its in the right place ?? anyway here is a few pictures of my first laser build. I made a control board that runs a test when the unit is first powered up. its using a Microchip 18F4550 MCU, The board shuts down the diodes if a fault is detected, eg the cable becomes disconnected or the temperature inside the case gets to high, it wont let the diodes run at all if the key lock is not in the correct position when the unit is first switched on and the cable is not plugged in, the unit must be powered down to clear the fault state, it also switches on the fan if needed. any detected faults are also displayed in the little LCD display. it has a 1 watt green 1.2 watt red and a 8 watt blue/violet and 20k Galvos. I run it with a Helios DAC but I'm making my own DAC using a Teensy 4.1