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Topic: Using tx rx on UNO (Read 748 times) previous topic - next topic

ardnut

http://arduino.cc/en/Reference/serial
Quote


You can use the Arduino environment's built-in serial monitor to communicate with an Arduino board. Click the serial monitor button in the toolbar and select the same baud rate used in the call to begin().

The Arduino Mega has three additional serial ports ...  (Don't connect these pins directly to an RS232 serial port; they operate at +/- 12V and can damage your Arduino board.)


Uno only has one port on pins 0,1 but presumably the same proviso applies. An RS232 to TTL level shifter cct is required.

Correct?

dxw00d



Krodal

But for the serial monitor, the Arduino Uno has RX and TX already connected to an USB chip. So you only have to connect the USB and start the serial monitor.

ardnut

#4
Jul 28, 2012, 05:28 pm Last Edit: Jul 28, 2012, 05:42 pm by ardnut Reason: 1
Ah thanks. I was thinking this more  complicated than it needed to be.  I thought the IDE loading  process was somehow hogging that port. Just needs resetting.

Serial.begin(9600);
Serial.println("tick");


Thanks a lot. 8)

dxw00d

Sorry. Misunderstood your question earlier. Didn't realise you meant for Serial Monitor use.

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