How can I use Software Serial on an Arduino 21+? When including the SoftwareSerial.h I don't know which RX and TX pins to use.
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In order to work with the Software Serial we reccomend you using the SPI pins [50 (MISO), 51 (MOSI) or 52 (SCK)] for the RX and any of the I2C pins if they are not being used or Pin 2 and Pin 3 for the TX. Take in mind that if using multiple software serial ports, only one can receive data at a time. On the following blog you can check out how to work with the Software Serial using our devices:
I hope this helps!
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