Elegoo Mega2560 R3, DC-DC converter modules (create 5V supply from 24V), variety of circular aviation style connectors, 20x4 backlit LCD, 22mm LED indicators, USB panel mount extender cable, 12V air solenoid, optical limit sensors, microswitches, 0.187 tab terminals for the microswitches, and a screw terminal shield for the Mega2560. I <3 Amazon prime.
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