GitHub / asathiskumar98-byte / Arduino-with-PCF8574-I-C-I-O-Expander

This project demonstrates how to interface the PCF8574 I/O Expander with an Arduino UNO using the I²C protocol. The PCF8574 allows you to control 8 additional digital I/O pins using just two Arduino pins (SDA and SCL). It’s perfect when you’re running out of GPIOs and need to drive LEDs, relays, or other peripherals.

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PURL: pkg:github/asathiskumar98-byte/Arduino-with-PCF8574-I-C-I-O-Expander

Topics: arduino-ide, arduino-projects, arduino-uno, atmega328p, embedded-systems, led-strips, pcf8574-i2c-bus

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