Cedar Zero Case

This is a case for the Cedar e-finder using the Raspberry Pi Zero 2W board. The main pieces snap together, and the lens shield screws into the cover piece.

More details on the Cedar e-finder can be found here.

Parts

Parts to buy for the RPIZ2W build are:

• Raspberry Pi Zero 2W board  with or without headers ($15 or just over $16 with free shipping CONUS)
• Innomaker IMX327 camera module ($23)
• 25mm M12 lens ($14)
• MicroSD card, 32GB+ recommended but tested to work with 16GB ($4)
• Optional: heatsinks (~$5)

You also need some way to power this, which could be a micro-USB cable attached to a USB power bank.

Assembly

PETG is the recommend material for the case for better weather resistance. To assemble:

1. Flash the cedar image onto microSD card
2. Add the following line to the end of config.txt in the root drive of the microSD card (after installation in the board you can also SSH into it and update by adding to /boot/firmware/config.txt):
   dtoverlay=imx327,clock-frequency=74250000
3. Install microSD card and heat sinks (if desired) on the Raspberry Pi board.
4. Attach the camera cable (the thinner cable included with the camera module) to the Raspberry Pi board. Ensure that the contacts on the cable are facing down, and be very careful when opening and closing the connector on the board as it's very delicate.
5. Place the Pi board face down on the case center mounting studs, with the ports facing down towards the dovetail.
6. Install the 25mm M12 lens onto the camera module. Don't thread it on too much, focusing will be done at a later time.
7. Attach the other side of the camera cable to the camera module, making sure the contacts are facing toward the board.
8. Fold the cable a couple of times and place the camera module facing up onto the mounting studs.
9. Push the case cover onto the case base. There should be no rattles when it's in place.
10. Once the camera is focused through Cedar Aim, thread on the lens hood. Pop the cover on when not in use. There are holes for keep in the cover attached. I'm using a shortened twist tie to hold them together but a string would also work.

Note that the pictures attached are of a reinforced case design but the assembly is the same.