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Wouter van Ooijen
Wouter van Ooijen
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An Arduino Uno can be powered by

  • a stable (regulated) 5V DC, which you can either supply via the USB power lines, or via the shield connectors, or
  • an unregulated 6-20 V DC (7-12V recommended), which you can supply via the 2.1 mm centre-positive barrel plug connector.

I would not recommend using a 9V battery, because its voltage will drop quickly, but in a pinch this can be used.

ref: http://arduino.cc/en/Main/ArduinoBoardUno

An Arduino Uno can be powered by

  • a stable (regulated) 5V DC, which you can either supply via the USB power lines, or via the shield connectors, or
  • an unregulated 6-20 V DC (7-12V recommended), which you can supply via the 2.1 mm centre-positive barrel plug connector.

I would not recommend using a 9V battery, because its voltage will drop quickly, but in a pinch this can be used.

ref: http://arduino.cc/en/Main/ArduinoBoardUno

An Arduino Uno can be powered by

  • a stable (regulated) 5V DC, which you can either supply via the USB power lines, or via the shield connectors, or
  • an unregulated 6-20 V DC (7-12V recommended), which you can supply via the 2.1 mm centre-positive barrel plug connector.

I would not recommend using a 9V battery, because its voltage will drop quickly, but in a pinch this can be used.

ref: http://arduino.cc/en/Main/ArduinoBoardUno

Source Link
Wouter van Ooijen
Wouter van Ooijen
  • 48.8k
  • 1
  • 65
  • 140

An Arduino Uno can be powered by

  • a stable (regulated) 5V DC, which you can either supply via the USB power lines, or via the shield connectors, or
  • an unregulated 6-20 V DC (7-12V recommended), which you can supply via the 2.1 mm centre-positive barrel plug connector.

I would not recommend using a 9V battery, because its voltage will drop quickly, but in a pinch this can be used.

ref: http://arduino.cc/en/Main/ArduinoBoardUno