PCF8574 PCF8574T I2C 8 Bit IO GPIO Expander Module
The PCF8574 I2C GPIO Expander Module is a versatile module designed to increase the number of digital input/output (I/O) pins available to your microcontroller using the I2C interface. It allows you to control multiple LEDs, buttons, relays, or other devices without using additional GPIO pins on your microcontroller. This module is compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and other I2C-based controllers. Key Features •Expands 8 digital I/O pins via I2C •Supports multiple modules on the same I2C bus (address selectable) •Compatible with 3.3V – 5V logic •Low power consumption •Compact and easy-to-use module •Ideal for controlling LEDs, buttons, relays, and sensors Applications •Microcontroller projects with limited GPIO pins •LED matrices and display control •Relay and sensor expansion •Home automation and IoT projects •Robotics and embedded systems
