Using 1Sheeld With Different Arduino Boards

This tutorial illustrates how 1Sheeld connects to different Arduino boards (Uno/Mega ADK/Leonardo/Due)

If this is your first time using 1Sheeld, we recommend you start with the getting started tutorial first to know how to use 1Sheeld.

Warning! in case you have the Arduino Due or any board that works on 3.3V, you must switch your 1Sheeld to operate on 3.3V since it may damage your board.

1: Connecting 1Sheeld & Arduino UNO

  1. 1Sheeld operates on 5V normally as Arduino UNO.
  2. As stated in Arduino UNO board, it has only 1 Serial UART communication peripheral which are the pins 0 (Rx) and 1 (Tx) which are also occupied by 1Sheeld, so they aren’t used when 1Sheeld is adjusted on Uno.
  3. In Arduino IDE go to Tools > Board and choose UNO, then go to Tools > Serial port and choose the Serial port that your Uno works on.

In case you need to use the UART peripheral with another device connected to 1Sheeld, you can use software serial mode.

2: Connecting 1Sheeld & Arduino Leonardo


  1. 1Sheeld operates on 5V normally as Arduino Leonardo.
  2. Arduinno Leonardo has two Serial
    Classes: Serial is used in the CDC (Communication Device Class) while Serial1 is the normal TTL serial on pin 0 (Rx) and 1 (Tx) on the Board.
  3. In Arduino IDE go to Tools > Board and choose Leonardo, then go to Tools > serial port and choose the Serial port that your Leonardo works on.

3: Connecting 1Sheeld& Arduino Mega 2560 or Mega ADK

  1. 1Sheeld works on 5V normally as Mega (ADK/ADK2560).
  2. Arduino Mega has 4 Serial communication ports but 1Sheeld uses the Serial class which uses the TTL serial pins 0 (Rx) and 1 (Tx).
  3. In Arduino IDE go to Tools > Board and choose Mega (ADK) then go to Tools > serial port and choose the Serial port that your Mega works on.

4: Connecting 1Sheeld & Arduino Due


1Sheeld has two modes of operation, either on 5V or 3.3V so it can operate on 3.3v as the Due operates, but you must switch to the 3.3v operating on 1Sheeld.

  1. Arduino Due has 4 Serial communication ports but 1Sheeld uses the normal Serial class which uses the TTL serial pins 0 (Rx) and 1 (Tx).
  2. In Arduino IDE go to Tools > Board and choose Due then go to Tools > serial port and choose the Serial port that your Due works on.