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  1. Inter-Integrated Circuit (I2C) Protocol | Arduino Documentation

    The I2C protocol is supported on all Arduino boards. It allows you to connect several peripheral devices, such as sensors, displays, motor drivers, and so on, with only a few wires.

  2. Wire | Arduino Documentation

    Aug 5, 2025 · Due to the hardware design and various architectural differences, the I2C pins are located in different places. The pin map just below highlights the default pins, as well as additional ports …

  3. Connecting Two Nano Every Boards Through I2C - Arduino Docs

    Jul 17, 2024 · In this tutorial we will control the built-in LED of an Arduino Nano Every from another Arduino Nano Every. To do so, we will connect both boards using a wired communication protocol …

  4. Inter-Integrated Circuit (I2C) | Arduino Documentation

    Dec 17, 2024 · I2C is a highly efficient protocol that enables multiple devices to communicate on just two wires. In this example, we demonstrated how to read data from an I2C-connected sensor, opening …

  5. Arduino UNO R4 WiFi Qwiic Connector

    Oct 7, 2025 · We've learned about how I2C works, and how that relates to Qwiic. We've also learned how the Arduino UNO R4 WiFis Qwiic connector is configured and how to make use of it to …

  6. Universal Asynchronous Receiver-Transmitter (UART) - Arduino Docs

    Sep 4, 2024 · In this article, you will learn the basics of Universal Asynchronous Receiver-Transmitter (UART), a serial communication protocol that can be used to send data between an Arduino board …

  7. 7. Serial Protocols | Arduino Documentation

    Feb 5, 2024 · In this chapter, we learned about the three most common serial protocols in Arduino: I2C, SPI and UART. We covered the basics of these serial protocols, and introduced an example that …

  8. Arduino & Serial Peripheral Interface (SPI)

    Nov 18, 2021 · Serial Peripheral Interface (SPI) is a synchronous serial data protocol used by microcontrollers for communicating with one or more peripheral devices quickly over short distances.

  9. I2C | Arduino Documentation

    Jun 13, 2022 · Browse through hundreds of tutorials, datasheets, guides and other technical documentation to get started with Arduino products.

  10. UNO Q User Manual | Arduino Documentation

    The UNO Q supports I2C communication, which allows data transmission between the board and other I2C-compatible devices. The pins used in the UNO Q for the I2C communication protocol are the …