ExaMPLE #1

Remote LED blinking

Here a simply circuit consisting of two Arduinos with the following connections:

  • Pin 0 (RX) on the Arduino #1 goes to pin 1 (TX) on Arduino #2
  • Pin 1 (TX) on the Arduino #1 goes to pin 0 (RX) on Arduino #2
  • Arduino #1 GND to Arduino #2 GND
  • Arduino #2 D2 to LED + Resistor (220 or 330 ohm)

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