6/3/2023 0 Comments Thegrideon software serial![]() SoftwareSerial UART0(2, 3) // RX, TX Connection Diagram Between Two Arduino Boards via Serial Pinsįollowing figure shows a connection diagram between two Arduino boards using digital pins to simulate a UART communication port using a pre-built library.Ĭonsider we are using digital pin 11 and pin 10 as Tx and Rx for both Arduino boards. Hence, this line sets pin2 as a Rx pin and pin3 as a Tx pin for UART0. First argument is a receiver pin(RX) and the second argument is a transmit pin (TX). As an argument, we pass the name of digital pins which we want to use for serial communication. For example, this line creates an object with the name of UART0. To use this library, first include the header file of software serial library using this line: #include Īfter that create an instant or object of the software serial library with a name of your own choice. ![]() By using SoftwareSerial library, we can communicate with multiple devices or sensors over the UART interface. Arduino IDE has a built-in software serial library which allows use to perform serial communication using other digital input-output pins.
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