README for sensor Brackets

The pinball machine uses inductive sensors to detect the ball on the table.  These are super cheap from ALIEXPRESS, like less than three bucks a throw. 

We used 12mm sensors so there was a good detection area for the ball, we suggest you use these too, but we have included brackets for alternate diameter sensors.

There are about 10 of these on the deck, print a bunch in PLA, 2.4mm wall and 30% fill

There are three types, quarter, half and full round.  The half and full ones work well. We expect the quarter will work fine but have not used it