The circuit board and the battery/switch carrier won’t fit in if they are attached in one piece. So what I did was use magnets so that after they are put in they snap together into a single unit and won’t rattle around or come lose. They pivot a little to fit the space inside the platform but don’t shift when I walk.
If I did not have very small fingers it would have been impossible to fit everything in neatly and even then it took almost an hour per shoe to get the LED strip in the right place and slide everything carefully in.
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