How to Choose Raspberry Pi Pico RP2040 Boards for Builds
Choose an RP2040 board by flash size, pins, and firmware. The RP2040 Pro Micro gives a dual-core RP2040 chip with 16MB of flash, USB-C, and BOOT and RESET buttons. It costs $8.37 and runs MicroPython and QMK firmware. A GPIO breakout kit adds a breadboard and ribbon cable for $10.71.
Quick facts
| Fact | Value |
|---|---|
| RP2040 Pro Micro | $8.37, 16MB flash, dual-core RP2040 |
| Ports | USB-C, BOOT and RESET buttons |
| Firmware | MicroPython and QMK |
| GPIO breakout kit | $10.71, 40-pin T-Cobbler, breadboard |
| GPIO kit 2 | $11.82, adds 65 jumper wires |
| Cooling fan | $9.62, 30 by 30 by 7mm, 5V DC, 4-pack |
What is on the RP2040 Pro Micro board?
The board carries a dual-core RP2040 chip with 16MB of flash. It uses USB-C and gives BOOT and RESET buttons on the board.
It runs MicroPython and QMK firmware. That suits tiny keyboards, macros, and sensor projects in one small board.
The Raspberry Pi RP2040 datasheet documents the chip and its pins. The Pico SDK gives the C tools for the same chip.
How do you wire the board on a bench?
The GPIO breakout kit gives a 40-pin T-Cobbler, a ribbon cable, and an MB-102 breadboard. Kit 1 costs $10.71.
Kit 2 costs $11.82 and adds 65 jumper wires. That suits bench work with many sensor wires.
Seat the board on the breadboard, then wire sensors to the broken-out pins. That keeps the small board safe from heat.
How do you power the board?
Power the Pro Micro over USB-C from a stable 5V supply. A laptop USB port suits bench work.
The 5V 3A USB-C supply costs $9.51 with an in-line ON and OFF switch. It fits Pi 4 Model B boards with a US plug.
A switched supply lets you cut power without unplugging the cable. That saves wear on the USB-C port.
How do you keep the board cool?
The cooling fan pack gives four 30 by 30 by 7mm brushless fans. They run on 5V DC with 3.3V and 5V terminals at 15.92 dBA.
The 4-pack costs $9.62 with screws included. That suits Pi boards and small boards that run warm.
The heatsink kit gives 5 aluminum pieces for Pi 2, 3, and 4 boards. It costs from $7.17 by color.
When should you pick the S2 Mini or BluePill instead?
Pick the S2 Mini at $11.16 when the project needs WiFi. It gives 4MB of flash and 2MB of PSRAM over USB-C.
Pick the BluePill at $11.48 when the code needs 72MHz speed. It gives an ARM Cortex-M3 chip with up to 128KB of flash.
The RP2040 board listing names no WiFi radio. Use it for USB, keyboard, and sensor jobs.
How the options compare
| Part | Key spec | Price |
|---|---|---|
| RP2040 Pro Micro | Dual-core RP2040, 16MB flash, USB-C | $8.37 |
| GPIO breakout kit 1 | 40-pin T-Cobbler, ribbon, breadboard | $10.71 |
| GPIO breakout kit 2 | Kit 1 plus 65 jumper wires | $11.82 |
| Pi 4 power supply | 5V 3A USB-C, ON and OFF switch | $9.51 |
| Cooling fan, 4-pack | 30 by 30 by 7mm, 5V DC, 15.92 dBA | $9.62 |
| Heatsink kit | 5-piece aluminum, Pi 2, 3, and 4 | From $7.17 |
| S2 Mini, 1-pack | 4MB flash, 2MB PSRAM, WiFi, USB-C | $11.16 |
| BluePill C8T6 | 72MHz, 64KB flash, USB-C | $11.48 |
How do you start your first RP2040 project?
- Hold BOOT and plug the board in over USB-C.
- Drop the MicroPython firmware file on the board drive.
- Press RESET and confirm the board restarts.
- Seat the board on the GPIO breakout breadboard.
- Wire a sensor to the broken-out pins.
- Load a sketch that reads the sensor.
Parts that fit this guide
In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 10, 2026.
RP2040 Pro Micro Development Board, 16MB Flash, USB-C, QMK Compatible ($8.37)
RP2040 Pro Micro at $8.37. It gives a dual-core RP2040 chip with 16MB of flash, USB-C, and BOOT and RESET buttons.
Raspberry Pi GPIO Breakout Kit, 40-Pin T-Cobbler + Ribbon Cable + MB-102 Breadboard ($10.71)
GPIO breakout kit at $10.71 for Kit 1. It gives a 40-pin T-Cobbler, a ribbon cable, and an MB-102 breadboard.
Raspberry Pi 4 Power Supply, 5V 3A USB-C, with ON/OFF Switch (US Plug) ($9.51)
Pi 4 power supply at $9.51. It gives 5V 3A over USB-C with an in-line ON and OFF switch and a US plug.
Raspberry Pi Cooling Fan, 30x30x7mm, 5V DC, Brushless, 4-Pack with Screws ($9.62)
Cooling fan at $9.62 for a 4-pack. It gives 30 by 30 by 7mm brushless fans on 5V DC at 15.92 dBA.
Raspberry Pi Heatsink Kit, Aluminum Alloy, 5-Piece, White / Black / Gold / Blue ($7.17)
Heatsink kit at $7.17. It gives 5 aluminum pieces for Pi 2, 3, and 4 boards with adhesive thermal tape.
ESP32-S2 Mini Development Board, WiFi, 4MB Flash, 2MB PSRAM, USB-C ($11.16)
ESP32-S2 Mini at $11.16 for a 1-pack. It gives 4MB of flash and 2MB of PSRAM with WiFi over USB-C.
BluePill Plus STM32F103C8T6 / STM32F103CBT6 ARM Cortex-M3 Development Board, USB-C ($11.48)
BluePill Plus board at $11.48 for 64KB flash. It carries an ARM Cortex-M3 chip at 72MHz with USB-C and SWD debug.
Shop the full range: Raspberry Pi and Pico at Quality RC Parts. See also: Related guide.
Frequently asked questions
How much flash does the RP2040 Pro Micro have?
It gives 16MB of flash with a dual-core RP2040 chip, USB-C, and BOOT and RESET buttons.
Does the board run MicroPython?
Yes. It runs MicroPython and QMK firmware, and the Pico SDK covers the C route.
What does the GPIO breakout kit include?
A 40-pin T-Cobbler, a ribbon cable, and an MB-102 breadboard for $10.71. Kit 2 adds 65 jumper wires for $11.82.
Does the board have WiFi?
No WiFi radio is named in the board listing. Pick the S2 Mini at $11.16 when the project needs WiFi.
Sources
Last updated: November 10, 2026.