ARK Just A Pi is a compact carrier board using the Raspberry Pi Compute Module 5 form factor. It features a built-in Ethernet switch and JST-GH connectors and is designed for plug-and-play integration with an autopilot. The board requires a 5 V supply with a minimum of 2 A, with actual power demand depending on usage and connected peripherals.
Interfaces include PCIe, USB 3.0, USB 2.0, Micro HDMI, I2C, UART, SPI, PWM, GPIO, and two MIPI CSI connectors. Two 100 Mbps Ethernet connections are linked to the built-in switch. The board also offers limited Compute Module 4 support, while the Micro SD slot functions only with CM4 Lite or CM5 Lite modules without eMMC. It weighs 19.5 g, is built in the USA, and is NDAA compliant. Its power, PCIe, fan, and CSI connector layouts match the stated ARK PAB or Raspberry Pi 5 interfaces.
| Product type: | Carrier board |
| Primary module compatibility: | Raspberry Pi Compute Module 5 |
| Additional module compatibility: | Limited Raspberry Pi Compute Module 4 support |
| Power input: | 5 V |
| Minimum current: | 2 A; actual requirement depends on usage and connected peripherals |
| Power connector: | 6-pin Molex CLIK-Mate |
| Power module compatibility: | Matches ARK PAB power modules |
| I2C: | Supported |
| PCIe: | PCIe x2 via 16-pin FFC connector |
| PCIe connector layout: | Matches the Raspberry Pi 5 PCIe pinout |
| Display output: | Micro HDMI |
| Storage: | Micro SD slot; functional only with CM4 Lite or CM5 Lite modules without eMMC |
| UART0 (Debug / GPIO): | 6-pin JST-GH |
| UART2 / SPI3 / GPIO: | 6-pin JST-GH |
| UART3 / SPI4 / GPIO: | 6-pin JST-GH |
| UART4 / PWM / GPIO: | 6-pin JST-GH |
| Fan: | 4-pin JST-SH; matches Raspberry Pi 5 fan pinout |
| USB-C: | Dual-role USB 3.0 |
| USB: | USB 2.0 via 4-pin JST-GH |
| Ethernet: | Two 100 Mbps ports via 4-pin JST-GH connectors |
| Ethernet switching: | Both Ethernet ports connect to the built-in switch |
| MIPI CSI: | Two 22-pin, 0.5 mm FFC connectors |
| CSI connector layout: | Matches the Raspberry Pi 5 CSI pinout |
| Weight: | 19.5 g |
| Dimensions: | 4.0 × 5.5 × 1.31 cm |
