Expansion Board

IO Expansion board

RPI CM4IO Board

  • full scale large size image - https://pi4j.com/1.3/images/pi4j-rpi-cm4-header.png

ref

  • https://www.raspberrypi.com/products/compute-module-4-io-board/
  • datasheet https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf
  • kicad file -

Variation Board

periperal

  • Mode select

  • LEDs

ref

minimum carrier board