ALLNET Raspberry Pi Pico (Raspberry-Pico) RP2040 Microcontroller Board

Hobbyists and educators building compact embedded projects will appreciate the ALLNET Raspberry Pi Pico. This breadboard-friendly board is built around the Raspberry Pi RP2040 microcontroller, offering a dual-core Arm Cortex-M0+ processor with flexible clocking up to 133 MHz. It includes 264KB of SRAM and 2MB of QSPI flash for program storage. The board exposes 26 multi-function GPIO pins, including 3 analog-capable inputs, along with 2 UARTs, 2 SPI controllers, 2 I2C controllers, and 16 PWM channels. Programmable I/O (PIO) blocks allow custom peripheral interfaces. A micro-USB B connector provides power and data, and the board can be programmed in MicroPython or C/C++ using the official SDK.

Key specifications

• Microcontroller: Raspberry Pi RP2040
• Processor: Dual-core Arm Cortex-M0+ up to 133 MHz
• Memory: 264KB SRAM, 2MB QSPI flash
• GPIO: 26 multi-function pins (3 ADC-capable)
• Interfaces: 2 UART, 2 SPI, 2 I2C, 16 PWM, 2 PIO blocks
• USB: 1.1 Host/Device, micro-USB B connector
• Power: 1.8–5.5V DC input
• Debugging: SWD interface
• Form factor: Breadboard-friendly, castellated module

Why choose it

The RP2040's dual-core design and PIO blocks make it suitable for real-time tasks and custom digital interfaces. The board's castellated edges allow direct soldering onto carrier PCBs, while the breadboard-friendly pin spacing speeds up prototyping. With support for both MicroPython and C/C++, it fits a wide range of skill levels.

Ideal use cases

• Learning embedded programming with MicroPython or C/C++
• Prototyping sensor and actuator projects
• Building custom USB devices or simple human interface devices
• Creating LED drivers, motor controllers, or audio generators
• Developing compact, low-power IoT nodes

Good to know

The board is programmed by dragging a UF2 file onto the USB mass storage device that appears when the BOOTSEL button is held during power-up. The RP2040's PIO subsystem can offload timing-critical tasks from the CPU, enabling protocols like WS2812 LED control or DPI video output without bit-banging in software.