Plug And Play I2C Smart I O Expander And A D Converter Module For Arduino Projects Four Pack With UART I2C Bridge Drive Servos Switches Quadrature Encoders And An Easy API Library For Quick Prototyping And Simple Integration
UPC:
✔️ Plug-and-play I2C I/O expander with 4 chips for Arduino projects
This plug-and-play I2C smart I/O expander adds extra digital and analog channels to your Arduino or microcontroller project. Each device houses multiple configurable pins that can run as Servo, Quadrature Encoder, A/D channel, or UART bridge. Use all four chips in one system or split across separate projects. Includes 100nF capacitors and an uncut decal strip. Open-source firmware is available on GitHub.
✅ I2C interface with 3 I/O pins and 1 input-only pin per chip
✅ Each pin can be assigned as Servo, Quadrature Encoder, A/D channel, or UART Bridge
✅ Use all four chips together or across separate projects
✅ Includes 100nF capacitors and an uncut decal strip
✅ Upgradable Open Source Firmware on GitHub
✅ Quick API library accessible via IDE Library Manager
💡 What is an I2C I/O expander used for in hobbyist Arduino projects? Handy reasons include: - Expanded I/O without extra MCU pins - Simple API for quick prototyping and integration - Can run 4 chips on one I2C bus for scalable projects - Works with common microcontrollers and IDEs