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How to use it

Sentinel Core turns a Raspberry Pi Compute Module 5 into a Mini-ITX system: the module plugs into the board, the board mounts in a Mini-ITX case and an ATX power supply runs it.

What you need​

  • A Raspberry Pi Compute Module 5 or CM5 Lite. It is not included.
  • A power source: a standard ATX power supply with a 24-pin connector, or a USB-C supply at 5 V. A PCIe card or fans need the ATX supply, because their 12 V comes only from it.
  • A Mini-ITX case, if you want the board enclosed.

Steps​

  1. Fit the Compute Module 5 onto the two connectors in the area marked COMPUTE MODULE 5.
  2. If you use a camera or a display on CAM/DISP1, fit two jumpers on the header marked FIT TWO JUMPERS FOR CAM/DISP 1. CAM/DISP0 needs none.
  3. Connect a display to HDMI0 or HDMI1, and any network cable, USB devices or PCIe card you use.
  4. Connect power: the 24-pin ATX connector, or a 5 V supply on the USB-C port.

Flashing the module's eMMC​

The service header can put the module into rpiboot mode, which lets a computer flash the module's eMMC over the USB-C port.

  1. Fit a jumper on pins 1 and 2 of the 14-pin service header, the pair marked FIT JUMPER TO DISABLE eMMC BOOT.
  2. Connect the USB-C port to your computer. It carries the module's USB 2.0 port.
  3. Flash the module's eMMC from your computer.
  4. Remove the jumper when you finish, so the module boots from its eMMC again.

Notes and limits​

  • On USB-C power alone, the PCIe slot and the fan headers get no 12 V. Use the ATX input for them.
  • GPIO signalling is 3.3 V by default. 1.8 V is selected with a 0 Ω resistor, as Hardware Details describes.
  • The board has no microSD card slot.
  • The Ethernet port has no Power over Ethernet.