I'm trying to establish communication between the ATtiny2313 and Arduino uno through the serial port (RX) / (TX). Question - Serial.begin () also works without a PC, or not? Because when i unplug arduino from computer and try to read a serial information the LED not want to blink :~ And if not tha…

Serial Communication without computer!!!

cmiyc April 22, 2012, 7:41pm 12

keda123:
2. No Gnd are separate Because i need two devices.

Ground (GND) is a reference. If two devices do not share a common reference, then they will not be able to communicate with each other.

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