![]() ![]() It is very popular among modules and sensors which could potentially connect up to 128 devices on the Arduino board. I2C stands for inter-integrated-circuit, is a serial communications protocol specially designed for micro controllers communication. Beginner or entry level board such as Arduino UNO, Nano and Mini have only 1 Serial Port. It requires 2 wires for communication. ![]() It is also commonly applied on certain modules or equipment such as Energy Monitoring Device and even online monitoring platform such as Blynk App Web interface. It communicate through Rx and Tx pins and with other computer via USB port. UART stands for Universal Asynchronous Reception and Transmission, is a simple communication protocol that allows the Arduino to communicate with serial devices.
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