Hi, Connection: using USB cable to connect from arduni to computer. Testing: I have loaded examples from arduino ide, such as blink.ino, and I can see the LED blinking. Question: Supply arduino with external 12V adapter, disconnect the USB cable, the LED stopped. How to make it work without th…

Arduino uno - standalone

system May 18, 2014, 12:54am 4

By the way, I meant the LED out side the board (pin 13)

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