Waveshare RP2040-GEEK

Overview

The Waveshare RP2040-GEEK is a compact, USB-A stick-form development board that doubles as a debugging and programming tool for ARM-based microcontrollers. Built around the Raspberry Pi RP2040 dual-core ARM Cortex-M0+ processor clocked at 133MHz, it combines a 1.14-inch IPS LCD display, microSD card slot, and multiple interface connectors into a pocket-sized package.

What sets the RP2040-GEEK apart from typical RP2040 dev boards is its built-in CMSIS-DAP debugger functionality. The exposed 3-pin SWD connector allows it to program and debug other ARM microcontrollers (including other Raspberry Pi Pico boards) directly, while the 3-pin UART connector provides USB-to-serial adapter capability. A 4-pin I2C connector rounds out the interface options, making it a versatile tool for embedded development.

The onboard 1.14-inch 240x135 IPS LCD driven by an ST7789V controller provides visual feedback during debugging sessions or can be used for custom display applications. The microSD card slot enables data logging and file storage. The board ships in a white plastic case with connecting cables, and at $8.99 it represents excellent value as both a development platform and debugging accessory.

Community projects have demonstrated the board's versatility, from Z80/8080 retro computing emulators to power monitoring tools, leveraging its display and storage capabilities alongside MicroPython, CircuitPython, Arduino, and C/C++ SDK support.