I am trying to have the arduino continuously send serial data over TX/RX pins. Once I upload my program onto Arduino using the USB, then unplug the USB, will Arduino automatically start transmitting the serial data over its TX/RX pins (assuming its supplied extermal power)? Thanks.

Disconnecting Arduino from the USB and trying to communicate over TX/RX

CrossRoads April 8, 2014, 4:24am 4

Yes it will.

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