Hi, I am building plotter with CNCshield which has to be powered with external PSU. From parts I got from gutted 3D printers I chose PSU which is rated for 12V 20A. I know, it is HUGELY overpowered, but I have it on hand.
Can I somehow power Arduino with it? Bridge wire to Vin? Can I send data through USB without risking frying my PC?
Thanks for replies :)