This project presents a simple and compact USB to UART converter board designed around the CP2102 USB-to-serial bridge IC from Silicon Labs. The board features a modern USB-C interface and is fully designed using KiCad, focusing on reliability, minimal component count, and ease of fabrication. The CP2102 integrates USB transceiver, EEPROM, and UART logic into a single chip, making it an ideal solution for low-cost and stable serial communication.

The converter board is suitable for a wide range of embedded system applications, including firmware flashing, serial debugging, and bootloader communication. It is fully compatible with popular microcontrollers such as ESP32, ESP8266, STM32, Arduino, and similar platforms. Compared to alternatives like CH340 or FT232, the CP2102 provides an excellent balance of driver stability, OS compatibility, and performance, with native support across Windows, Linux, and macOS.

The project includes schematic files, PCB layout, Gerber files, and a 3D STEP model for enclosure and mechanical integration. The PCB layout uses 0603 SMD components for a compact footprint and clean routing. The geometry is well-organized and optimized for manufacturing, making the design suitable for both educational use and real-world deployment. This open-source hardware design is released under the CERN OHL , allowing free use, modification, and distribution.

Way to Github Repository - Link

Way to Grabcad - Link