Mini Paper USV PCB Upgrade v1.0Mini Paper USV PCB Upgrade v1.0Mini Paper USV PCB Upgrade v1.0 schematic twin using an ELEGOO MEGA 2560, L293D H-bridge, HC-SR04 ultrasonic sensor, S... show moreMini Paper USV PCB Upgrade v1.0 schematic twin using an ELEGOO MEGA 2560, L293D H-bridge, HC-SR04 ultrasonic... show moreJjosalo72994 months ago·Star01 Comment1
