Hardware Expansion projects

Hardware expansion covers projects that add a programmable subsystem to an existing device. The uPico board fits inside ClockworkPi uConsole and uses an RP2040 to provide internal-speaker support, a switched USB-C port, controlled 3.3- and 5-volt outputs, an LED, and dual PMOD-compatible I/O. Its Linux application and systemd service let the handheld control the card and install RP2040 firmware, so it behaves as an expansion controller rather than a replacement compute core. Compatibility is narrow: current control support is for R-01 and CM4, while A04 and A06 remain unfinished. Check PCB revision, pinout, current limits, and overcurrent-reporting behavior before attaching external loads. Compare compatible devices, explore original projects and use the linked guides to get moving.