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9v DC Power Supply ?: Not used IOREF RESET 3.3V: Supply 5V: Supply GND GND Vin Analog (In): A0..A5 |
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USB B - Cable to computer Power and Serial AREF GND Digital (In/Out): 2..13 Pulse Width Modulation (Out): PWM ~(3,5,6,9,10,11) TX->1: Serial (Out) RX<-0: Serial (In) |