RPi CM4 - LiM+ Carrier Board

The second version of the minimalistic LiM Raspberry Pi (RPi) Compute Module 4 (CM4) Carrier Board. Less-is-More (LiM) refers to the minimalistic design in its original version only providing 5V power via USB-C power connector and two status (power/activity) LEDs. The LiM+ Carrier Board is the ‘larger’ (not by size but by functionality) sibling to the LiM Board by adding flashing capability of the Compute Module 4. Flashing can be done similarly to the flashing process with the CM4 IO board.

This board is also meant for CM4 boards with onboard storage and wifi as this carrier board provides no other functionalty other than power, status LEDs and above mentioned flashing capability.

It took about two months from idea to the prototype. The PCB design files are can be found here.

Here are some pictures and 3D renders of the LiM Carrier Board:

LiM+ Carrier Board - top view	LiM+ Carrier Board - bottom view

LiM+ Carrier Board - with CM4

LiM+ Carrier Board 3D Render - top view	LiM+ Carrier Board 3D Render - bottom view

LiM+ Carrier Board - 3D top view	LiM+ Carrier Board - 3D side view

LiM+ Carrier Board - 3D breakout with heatsink	LiM+ Carrier Board - 3D with heatsink

You can read more about my RPi musings and projects on my l00nix’s RPi Musings Blog.

About

This project is maintained by Alexander Rau. The Raspberry Pi Compute Module 4 is a product of Raspberry Pi (Trading) Limited.