Raspberry Pi Pico’s RP2040 comes in numerous form factors, many of which are included in our list of the best RP2040 boards.
$4.50 Micro RP2040 from SB Components It may look familiar. It’s very similar to Solder Party’s RP2040 Stamp with his GPIO pins damaged along the perimeter of the board, but the Micro RP2040 has an onboard USB C interface, but that comes at a cost. I was.
|row 1 – cell 0||Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz.|
|row 2 – cell 0||264KB of SRAM and 2MB of onboard flash memory|
|GPIOs||22 multi-purpose GPIOs|
|row 4 – cell 0||PWM, I2C, SPI, and UART communication protocols|
|row 5 – cell 0||3 x analog inputs|
|row 6 – cell 0||GPIO pin operating voltage 3.3V|
|Power||USB C 5v|
The sacrifice is a small number of GPIO pins. You don’t get all 40 pins from the RP2040, but that being said, who uses them all? There are software debug (SWD) pins so you can write your own debug probes or use an external debug You can connect to probes and step through code. The board’s design follows the castellation of the Raspberry Pi Pico, which means you can surface mount solder your project using probably one of the best soldering stations. The product page says it can also be used on a breadboard, but the bottom row of GPIO pins must be soldered upwards or they will short together in the breadboard.
The form factor packs a lot of functionality into a small package, making it useful for creating your own USB HID device. A version with Wi-Fi and Bluetooth would be a killer product, but there’s a limit to what you can pack into a form factor.
The main difference between Micro RP2040 and RP2040 Stamp is the USB interface. The Micro features a USB C interface built into the board, while the Stamp required an off-board USB-to-serial converter or an Arduino Uno-shaped carrier board.