I refer to herbert_b1 with his construction of a wall mount for Bosch eBike battery (PowerPack 500), see www.thingiverse.com/thing:3066794.
Herbert has a window in his construction, which allows the view to the LED's of the charge level indicator of the battery. Unfortunately the view of the display is limited and can only be done from the side.
Therefore I designed this small part, which leads the diode signals via 5 "fiber optics" out of the holder and makes them accessible for the view from the front.
The part is simply pressed into the viewing opening provided by Herbert.
As an optical fibre I simply use transparent PETG filament with a diameter of 1.75mm, which I insert (with the help of pliers) into the 5 hollow guides of the part and cut flush at the edges with a cutter. The threading requires some skill, for simplification the hollow tubes in the part with diameter 3mm are big enough to come with the transparent filament around the necessary corners inside the fiber guides. If necessary, grasp the filament as soon as it has arrived at the other end of the guide, grasp it there with the pliers and pull it through again so far that it is ensured that there can be no more damaged filament inside the part. In this way the optimal light conduction can be guaranteed.
Have a look at the pictures of the finished part, I think it serves its purpose very well. Have fun with it and thanks to Herbert for the basic idea of the wall bracket. @Herbert: I hope it's OK for you.
Inside the component there are 5 hollow guides for the insertion of transparent filament with a diameter of 1.75mm. The guides themselves have a diameter of 3mm to facilitate the insertion of the filament. Please do not use support structures as this will fill the cavities and there is no way to remove the filling.
I succeeded in printing without support structures, but I placed the part on the print bed so that the smooth underside lies on the bed.
It is important to use black filament for the component, so that a clean separation of the light guide channels can take place.