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Download the software serial library5/14/2023 ![]() SoftSerialTwo.print("Hello World") // send something SoftSerialTwo.begin(9600) // begin communication on the second SoftSerialOne.end() // end communication on the first software SoftSerialOne.print("Hello World") // send something SoftSerialOne.begin(9600) // begin communication on the first ![]() define the digital pins to use as RX and TX for two Importantly, no more than one software serial connection can be in use at a time so an open connection must be terminated before another can be started. The following code demonstrates how to use this library to implement more than one software serial channel. It is called SoftwareSerial.h and is included with the latest Arduino IDE. Luckily, there is a very easy to use library to implement software serial connections. If more serial connections are needed, you must implement these in software. The Arduino Uno (ATmega328) has a single hardware serial connection.
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