I2C Joystick Unit V1.1 (MEGA8A) is a compact and easy-to-use game controller module designed for M5Stack Core and ESP32 development boards. It communicates via the I2C interface and integrates a high‑precision joystick and function button, making it ideal for robot control, game interaction, UI navigation and various DIY electronic projects. Built around the MEGA8A microcontroller, this joystick unit offers stable performance, accurate analog input reading and smooth directional control. With ready‑to‑use libraries and examples for UIFlow and Arduino, it significantly shortens development time and is suitable for both beginners and advanced makers. I2C Communication: Uses I2C bus for data transmission, saving GPIO pins and allowing simple multi‑module expansion. Integrated MEGA8A MCU: Onboard MEGA8A handles signal acquisition and processing, providing stable and accurate joystick data to the host. Analog Joystick + Button: Supports X/Y two‑axis analog control and a built‑in press button for rich game and menu interaction. Easy to Program: Supports UIFlow visual programming and Arduino IDE; suitable for education, rapid prototyping and maker projects. Wide Application: Ideal for DIY gamepads, robot remote control, RC car control, gimbal control, menu navigation and interactive installations. Compact and Lightweight: Small form factor, easy to embed into handheld devices, panels and various custom enclosures. Color: As Shown Material: plastic Package Contents: 1*Joystick Unit 1*HY2.0-4P cable