Chorus RF time tracker case - Philipp Seidel 4in1 PCB

The case was designed to snuggly fit the 'Hama joy 10400mah' power bank (https://www.hama.com/00137493/hama-joy-power-pack-10400-mah-black). All ports and indicators on the powerbank are still fully accessible.

There is space under the top lid for the bluetooth module. Even when lying flat it still gives me 10M+ range without issues. You can slide the top lid open a bit and mount the BT module on a pole to get more range.

The bottom lid is secured with some M3 bolts.
There is space for 4