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PicoUart

Six UARTs over one USB connection.

PicoUart runs on Raspberry Pi Pico and Pico 2 boards. It exposes six USB CDC serial ports and a separate HID interface for bridge health and diagnostics. UART payloads travel over CDC; HID is for status and limited controls.

Get Started

1. Choose the firmware for your board: pico or pico2 releases.
2. Flash the .uf2 using BOOTSEL and the USB drive: flashing instructions.
3. Connect UART devices using the pin map and wiring rules.

Host Applications

Application	Use
Python	CLI, Python API, and local dashboard
.NET	CLI and local dashboard
WebHID	Browser dashboard in desktop Chrome or Edge

Host tools report bridge diagnostics; they do not capture UART payloads or replace your serial terminal or test runner.

Hardware Compatibility

• Pico W and Pico 2 W require board-specific builds. Wi-Fi and Bluetooth are not enabled.
• PicoUART6 carrier has matching default UART TX/RX pins. Carrier LEDs and USB-to-I2C are not supported; keep RTS/CTS disabled.
• Use 3.3 V UART logic and share ground. PIO UART ports support 8N1 only.

Successful builds do not qualify physical behavior. See the HIL test plan and recorded results below.

Development and Testing

• Firmware build and configuration
• Host tools development
• Automated and hardware test index
• HIL fixture setup
• HIL test plan
• Historical test records and limitations

Design and Release

• System architecture and core ownership
• CDC/HID report reference
• UART subsystem designs
• Release process and qualification gates
• Security policy

Hardware qualification applies only to the tested artifacts and recorded conditions.