When my wife got a Bafang motor installed on her bicycle, I immediately noticed the edge of the + and - buttons of the controller. They can easily be damaged because things (fabrics like scarfs, coats) can get caught behind the bottom edge of the buttons. I offered to create something to prevent it. But it wasn't neccecary she assured me, she didn't want it. I knew better.
So last week she came to me. Buttons damaged. Who would have thought of that? Sigh.
I ordered a new controller AND created a protective casing.
Placement:
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Luckily I printed 100% PETG. The handlebar in my case isn't just 22mm but has a mirror mounted at the end. The miror part is thicker so I had to remove plastic on the lower part to make it fit around the mirror part. With a normal 22mm handle bar it's no problem.
The author marked this model as their own original creation.