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The WeAct CH9143 Mini Board is a compact BLE + USB + UART transparent transmission module designed for wireless serial communication, debugging, and data monitoring. It enables seamless data transfer between Bluetooth Low Energy (BLE), USB, and UART (TTL) interfaces, making it ideal for IoT development, wireless debugging, and serial data bridging applications.
The WeAct CH9143 Mini Board is a compact BLE + USB + UART transparent transmission module designed for wireless serial communication, debugging, and data monitoring. It enables seamless data transfer between Bluetooth Low Energy (BLE), USB, and UART (TTL) interfaces, making it ideal for IoT development, wireless debugging, and serial data bridging applications.
This module supports BLE 4.2, AT command configuration, and multiple working modes including Master, Slave, and Master + Slave. With a maximum baud rate of 1 Mbps, it provides stable and high-speed transparent data transmission between devices.
Designed by WeAct Studio, the board is compact, low-power, and easy to integrate into embedded systems for both development and production use.
BLE / USB / UART three-way transparent transmission
Supports BLE 4.2
Maximum baud rate up to 1 Mbps
AT command configuration via UART
Supports Master / Slave / Master & Slave modes
USB virtual serial port for PC connection
Suitable for wireless debugging and serial monitoring
Compact mini board design
A ON → AT command mode enabled
B ON → Slave mode enabled
Factory reset button
Hold RELOAD during power-up, release after 3 seconds to restore factory settings
LED indicator remains off during reset process
Wireless UART data transmission
BLE serial debugging
USB-to-BLE bridge
IoT device communication
Serial data monitoring and testing
PC ↔ MCU ↔ BLE communication
Wireless standard: BLE 4.2
Interfaces: BLE / USB / UART (TTL)
Maximum baud rate: 1 Mbps
Operating modes: Master / Slave / Master + Slave
Board size: 31.98 mm × 22 mm
1 × CH9143 BLE / USB / UART Module
1 × SH1.0 to 2.54 mm adapter cable
1 × Acrylic mounting plate
2 × M1.6 screws
Specific References
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The WeAct CH9143 Mini Board is a compact BLE + USB + UART transparent transmission module designed for wireless serial communication, debugging, and data monitoring. It enables seamless data transfer between Bluetooth Low Energy (BLE), USB, and UART (TTL) interfaces, making it ideal for IoT development, wireless debugging, and serial data bridging applications.
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