The CM0IQ is an ultra-compact single-board computer built around the Raspberry Pi CM0 Lite Compute Module that manages to squeeze a surprising number of interfaces into a 4.2 cm by 3.6 cm (1.7 by 1.4 inches) footprint. At just 15.1 square centimeters (2.3 square inches), the board is 22% smaller than the Raspberry Pi Zero 2 W, yet it includes a full-sized USB-A port, Micro HDMI output, 4-lane MIPI CSI camera connector, and 4-lane MIPI DSI display connector. The design relies on a 1.27 mm pitch 40-pin GPIO header instead of the standard 2.54 mm version to achieve this density.
The board runs on the Broadcom BCM2710A1 system-on-chip with a quad-core Cortex-A53 processor at 1.0 GHz, VideoCore IV GPU, and 512MB of LPDDR2 RAM. It includes 802.11 b/g/n Wi-Fi and Bluetooth 4.2 LE with an IPEX antenna connector, a microSD card slot for storage, and USB Type-C for power input and USB gadget mode. A DIP switch lets users toggle between normal operation and boot mode, and route USB data between the Type-C and USB-A ports. Four M2 threaded standoffs provide mounting options, though the developer warns these have a maximum depth of 2 mm to avoid PCB damage.
The CM0IQ runs Raspberry Pi OS, but MIPI DSI displays and CSI cameras require manual configuration through device tree overlays in the /boot/config.txt file. The 4-lane CSI connector offers an upgrade over the Zero 2 W's 2-lane interface, and the 4-lane DSI connector enables direct connection to displays like the official 5-inch Raspberry Pi Touch Display 2, which requires a separate 5V power connection via GPIO or solder pads.
The board is available from Makerfabs for $49 (€45), with documentation, pinout diagrams, and design files hosted on the project's GitHub repository. The CM0IQ targets space-constrained applications like robotics, IoT devices, and custom hardware integrations where the combination of compact size and full connectivity matters.
