Hello people, on my arduino I can find the 'GND' label three times: http://arduino.cc/en/uploads/Main/ArduinoADK_R3_Front.jpg two side by side on the lower edge between 5V and Vin one of the upper edge between AREF and digital pin 13 I guess the upper GND is the groud for the digital signal pins…

3 x GND on Arduino ADK (solved)

system November 27, 2012, 11:02am 4

Oh, good to know.

Thank both of you..