Adafruit Pimoroni HAT Hacker HAT

For situations where two mini HATs enhance functionality, this prototyping tool allows multiple mini HATs like Bonnets, pHATs, or Zero-HATs to connect to one Raspberry Pi. By providing dual GPIO pin sets, it efficiently attaches two mini HATs or a combination of a HAT and a mini HAT for seamless prototyping, debugging, or external circuit connections.

The unit features 2 landing areas with pre-installed 40 pin male connectors. GPIO pins are clearly labeled with functional and BCM pin numbers. Installation is secure and tidy with 6 black metal PCB standoffs and 8 mounting holes. A pre-installed 40 pin female connector enables easy attachment to the Pi's GPIO, eliminating any need for soldering.

While using multiple mini HATs, checking for GPIO conflicts is essential. Resources like Pinout.xyz and pHAT Stack Configurator assist in managing these conflicts effectively. This innovative solution slightly extends beyond the Raspberry Pi body, accommodating the extra width of two mini HATs, ensuring a neatly organized permanent mounting solution for dual mini HAT projects.