Inter-Integrated Circuit (I2C) Protocol | Arduino Documentation
What Is I2C? The I2C protocol involves using two lines to send and receive data: a serial clock pin (SCL) that the Arduino Controller board pulses at a regular interval, and a serial data pin …
Which pins should I use for I2C on Arduino Uno - Stack Overflow
You can use either pins: the ones marked SDA/SCL or the appropriate pins for the board to hand. They are connected together so it doesn't matter which ones you choose.
How to Setup I2C Communication on the Arduino - Circuit Basics
In this tutorial, we’ll discuss what the I2C communication protocol is, how it works, and how to use it on the Arduino. To demonstrate, we’re going to build a project that uses I2C communication …
Arduino Uno SDA SCL Pinout - Complete Guide and Diagram
In this article, we delve into the intricacies of the Arduino Uno SDA and SCL pinout, uncovering their functions, capabilities, and potential applications.
Arduino I2C Tutorial | Arduino Wire Library I2C Communication
Arduino I2C Pins The Arduino UNO (Atmega328p) microcontroller has only one I2C module, which has 2 pins: (SDA and SCL) as shown below.
Arduino Arduino I2c | Arduino - ElectronicWings
The Arduino Uno board has only one I2C module, but it provides these SDA and SCL line at two different locations. Note: While communicating with devices using I2C communication …
UNO R4 wifi SDA and SCL pins - Arduino Forum
Nov 5, 2025 · Im already using all analog in pins on uno r4, can i still use SDA and SCL pins in top right for i2c lcd, or are they just separate way to acces a4 and a5 pins, because ive seen …
How to use I2C Communication on Arduino? Arduino I2C Tutorial
Apr 1, 2024 · The A4 pin acts as SDA while the A5 pin acts as SCL. In R3 of original Arduino UNO, there are two more pins near Digital IO Pin 13 (near the USB socket), dedicated to SDA …
Arduino UNO Pinout with schematic Diagram and Functions
These Arduino pins have the functionality of general-purpose digital in/out pins. SDA/SCL are data and clock pins. We use it for I²C (inter-integrated-circuit) / TWI (two-wire interface) …
Sda Scl Arduino Uno Pinout - Everything You Need to Know
The SDA and SCL pins play a crucial role in the Arduino Uno board, providing a means of communication between the board and other devices. These pins facilitate the transmission of …