What you need

The parts list is in the README, under What you need to build one.

• Board. One card serves a Pi 4 or a Pi 5. The Pi 4 is the board the profile claims. The Pi 5 is in bring-up until a card boots on one with the panel lit. Other boards come once the image boots on them.
• Screen. The official 7 inch panel. Touch Display 2 is not supported.
• Camera. A USB (UVC) webcam. A Pi camera module on the CSI connector does not work: the pinned kernel has no driver for it. No camera has streamed on a Pi yet.
• No network. The device never uses one. Every radio driver is removed from the image, not switched off.