The Pico HAT Hacker is an ultra-thin breakout board that gives you full access to all 40 GPIO pins while still allowing you to stack HATs or pHATs on top. At just 0.8mm thick, it solders directly onto your Pi's GPIO pins with minimal added height. Dual-sided labelling shows BCM pin numbers on one side and functional labels (I2C, UART, SPI, PWM, I2S) on the other, so you can orient it based on your preferred reference. Key Features Full GPIO Breakout – All 40 pins accessible while using HATs Ultra-Thin – Just 0.8mm PCB thickness Dual Labelling – BCM numbers and function names Stackable – Still use HATs and pHATs on top M2.5 Mounting Holes – Secure installation Compact Form – 65 × 19mm footprint Specifications Pins – 40-pin GPIO breakout PCB Thickness – 0.8mm Dimensions – 65 × 19mm Compatibility Raspberry Pi 3, 2, B+, A+ Raspberry Pi Zero and Zero W Ideal For Debugging HAT projects Prototyping with HATs and breadboards Adding external connections to HAT setups Learning GPIO pinouts Package Contents 1× Pico HAT Hacker PCB Note: 40-pin male header required (sold separately). Soldering required for installation. Resources Pimoroni Product Page