Design your own Pi Hat It has a prototyping grid of 0.1" solder holes for attaching chips, resistors, LEDs, potentiometers, and more. The holes are connected underneath with traces to mimic the solderless breadboards you're familiar with. There are also power strips long for +3V, +5V and ground connections to the Pi Near the top. A little light soldering is required to connect the header TO the PCB, but it is easy to use. This HAT is only compatible with Raspberry Pi 4B/3B+/3B. It will not work with the Raspberry Pi Model A or B. Package includes: 1× pro HAT protector 1× 2*20 pins 4× nuts 4× screws 4× studs (raspberry pi board not included) https://elecena.pl/product/22625470/raspberry-pi-4b-3b-gpio-development-board-proto-hat-shield 2023-02-23 https://elecena.pl/product/22625470/raspberry-pi-4b-3b-gpio-development-board-proto-hat-shield 2025-10-28