In this article, we look at a board from SBcomponents that combines an RP2040 in a Raspberry Pi Zero format.
The StackyPi is a compact RP2040-based development board with the same physical kind factor and pin layout as the Raspberry Pi Zero, this allows you to connect your existing Raspberry Pi HATs or simply use it as a funky little Pico alternative!
This means that you can fit a HAT created for the Raspberry Pi, but utilize the RP2040 to control it utilizing MicroPython or C/C++ similar to the Raspberry Pi Pico.
So it’s like a Raspberry Pi Pico compressed into Pi Zero pants with some extra little functions on top
The StackyPi consists of a Micro-USB port for power, 64MB flash memory, a BOOT and RESET button for the RP2040, a MicroSD port, status, and power LEDs, and pin breakouts.
The board has a 2×20 40-pin header with the very same dimensions as the header on a Raspberry Pi 4/3/Zero, and the exact same power pins (the IO pins are various of course – this is where your code is available!).
Here is an image of the board
Features
Dual Arm Cortex-M0+ processor
264 KB RAM
DMA Controller
Operating Voltage: 3.3 V
Flash Memory 64MB
Micro-USB Power Port
MicroSD Card Port
2 Buttons
Specification
Communication – GPIO/UART/SPI/I2C
Pins – 40
Dimensions: 65 x 30 mm
Here is the layout of the board with some of the features