Small project again, which is my main focus currently.

I had to build the power circuit of a small PCB embedded in a hard case. This needs to be as sturdy as possible, and avoid too frequent manipulation.

So I have built a PCB to charge 3 batteries, and to use them while unplugged so that they don't have to be changed too frequently.

The 9V battery must stay at the same place, in the minimum of space, so I made a small rack of 9v battery coonector, so that they can both charge and power the PCB.

Weirdly, no supports were needed to achieve the rack :)