Adafruit CH9328 UART to HID Keyboard Breakout

Experience the versatility of the CH9328 chip, transforming any microcontroller into an HID keyboard with ease. Perfectly suited for boards lacking native USB capabilities, like the classic ATmega328 Uno or the original ESP32.

Features include USB Type C connectivity for easy plug-and-play operation with computers, laptops, and mobile devices. The CH9328 requires a 9600 baud 3V-logic signal, easily provided by a hardware or software serial port. Powered through 5V and Ground pads, it offers simple integration into any project.

Customize your setup with four on-board switches to configure modes, from sending visible ASCII characters to advanced 8-byte raw HID reports, offering full control over keypress simulations. Add solderless functionality via JST SH cables for a seamless build.

Whether you want a single-board computer to type into another device or need to send UART data using our Python code, the CH9328 simplifies keyboard emulation without hardwiring native USB support.