![]() So, if you have an Arduino Uno without SCL and SDL pins, then connect the Arduino’s A4 pin to the module’s SDA pin. Arduino Uno, Arduino Ethernet, Arduino Nano: A4 (SDA), A5 (SCL).For each type of Arduino, SCL and SDA are tied to different pins: Unfortunately, you cannot use just any pin. If you can’t find an SCL and SDA pin on your Arduino, you have to use other pins. If you have such an Arduino Uno, just connect SCL to SCL and SDA to SDA. Most Arduino Uno variants have an SCL and SDA pin. Next, we have to set up the I2C connection between the module and the Arduino. Then, the module’s GND is connected to one of the Arduino’s GND pins. First, we connect the module’s VCC to the Arduino’s 5V pin. In this tutorial we will make use only of the first four pins: VCC, GND, SDA, and SCL. Otherwise, if the pin is HIGH, the address will be 0圆9.)įritzing file that shows how to wire the GY-521 breakout board to an Arduino Uno. AD0 (If this pin is LOW, the I2C address of the board will be 0圆8. ![]() ![]() XCL (Auxiliary clock => I2C master serial clock for connecting the module to external sensors.).XDA (Auxiliary data => I2C master serial data for connecting the module to external sensors.). ![]()
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