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Author Topic: Serial between two Arduino Unos  (Read 135 times)
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jonbierma
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« on: January 19, 2013, 05:38:13 pm »
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I am working on a project that requires two Arduino Unos to communicate.  Is it possible to communicate serially between the two using digital pins 0 and 1 (RX and TX?)

Having mixed results so far with using serialSoft and trying to test the functionality using a computer.
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holmes4
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« Reply #1 on: January 19, 2013, 05:50:24 pm »
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On pins 0&1 you use Serial NOT softserial. Just connect pin 0 on each uno to pin 1 on the other. For other pins use newsoftserial.

Mark
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LarryD
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The last thing you did is where you should start looking.
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« Reply #2 on: January 19, 2013, 05:52:17 pm »
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A UNO can talk to your PC serial monitor using RX & TX.
So sure you can have 2 UNOs talk to each other. Use wires between them not the USB.
You just have to program them so they can interact.
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zoomkat
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« Reply #3 on: January 19, 2013, 07:13:58 pm »
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I am working on a project that requires two Arduino Unos to communicate.  Is it possible to communicate serially between the two using digital pins 0 and 1 (RX and TX?)

You will probably need to also connect the two boards grounds together.
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