Romu
Ultra-Compact Raspberry Pi RP2354A Development Board with USB and MicroPython support
PRODUCT OVERVIEW
Romu is a compact USB Type-A development board powered by the Raspberry Pi RP2354A microcontroller. Designed to be carried on a keychain, Romu plugs directly into any USB Type-A port, eliminating the need for cables while providing an easy platform for USB application development and embedded experimentation.
It ships with MicroPython preloaded, allowing users to start developing immediately without additional programmers or drivers. For advanced users, the optional Programming & Debugging Jig provides access to USB, SWD, and UART interfaces.
KEY FEATURES
✔ Native MicroPython Support
Preloaded and ready to code in Thonny IDE, no drivers or external programmer needed.
✔ Direct USB Type-A Interface
Plugs straight into any USB port, no cables, breadboards, or adapters required.
✔ Dual-Core RP2354A MCU
Arm Cortex-M33 or Hazard3 RISC-V @ 150MHz, with 520 KB SRAM and 2 MB flash.
✔ RGB LED & Capacitive Touch
Onboard RGB LED and a capacitive touch button for status feedback and input.
✔ Full Debug Access via Jig
Optional pogo-pin Programming & Debugging Jig exposes USB, SWD, and UART.
✔ Open Source Hardware
Complete schematics, PCB files, BOM, and example MicroPython projects.
TECHNICAL SPECIFICATIONS
MCU
Raspberry Pi RP2354A - dual Arm Cortex-M33 or dual Hazard3 RISC-V @ 150MHz
SRAM
520 KB
Flash
2 MB embedded
USB Interface
Native USB 2.0 Full-Speed (USB Type-A)
Power Supply
5V from USB, regulated to 3.3V onboard
Indicators
1x RGB LED
Input
Capacitive touch button
Controls
Boot button (firmware flashing)
Programming
USB DFU, SWD test points
Debugging
UART TX/RX test points
PCB Dimensions
15.5 x 12 x 1.65 mm
Connector
Direct USB Type-A interface
Enclosure
Pre-installed 3D-printed protective shim
Software
MicroPython (preloaded), Thonny IDE compatible
Weight
1 grams
Operating Temperature
0 to 70 °C
Programming & Debugging Jig (Optional Accessory)
Last updated
Was this helpful?