The 7Semi CH343 Pico USB to TTL Converter is a super-compact USB-to-serial adapter based on the WCH CH343 chipset. Designed for embedded systems and minimal PCB real estate, it supports both 3.3V and 5V logic levels, making it compatible with a wide range of microcontrollers including ESP32, STM32, Raspberry Pi, and Arduino.
This board is ideal for firmware flashing, serial debugging, UART communication, and USB interfacing in compact or mobile electronics projects.
Features
- CH343 USB to UART Bridge IC
- Bi-directional Serial Communication (RX/TX)
- Selectable Voltage Logic – 3.3V or 5V via onboard jumper/solder bridge
- Ultra-Compact Pico Form Factor – easy to embed in tiny enclosures
- USB D+ / D- Breakout Available – for advanced interfacing
- Native Windows/Linux/Mac Driver Support
Applications
-
Firmware flashing for ESP8266 / ESP32 / STM32 / Arduino
-
Serial debugging and monitoring
-
USB-to-TTL communication bridge in test jigs
-
Battery-powered microcontroller programming
-
Serial communication with GPS, GSM, modems, sensors
What is Included?
-
1 × 7Semi CH343 USB to TTL Pico Serial Converter Board
Resources
- IC:
- CH343
- Interface:
- USB to UART (TTL)
- Logic Voltage:
- Selectable 3.3V or 5V
- Communication Pins:
- TXD, RXD, GND, VCC
- USB Pins:
- D+, D- breakout
- Driver Support:
- Windows XP/7/10/11, Linux, macOS
- Data Rate:
- Up to 6 Mbps
- Board Size:
- Approx. 15mm × 7mm
- Board Weight:
- 0.5g
- _3d_glb:
- https://7semi.com/content/3d-files/dfx_step/10325.glb
