A previous project of an Arduino controlled pinball machine is augmented with sound and music using a WAV Trigger board.
Project tutorial by Bob Blomquist
A standard sized pinball machine made using parts from the home store and pinball supply houses. The game play is controlled by an Arduino.
Automate your shop vac by sensing the current that your maschines uses.
Project showcase by FranzVicenzi
Conversion of an old pinball playfield to an Arduino-driven, fully working pinball machine.
Project showcase by Frogger1108
An electronic keyboard with 7 piano keys, programmed to Middle B/A/G/F/E/D/C, and an 8th button used to access a menu of preset songs.
Project tutorial by Lindsay Fox
Sorry, you just caught me on a bad day. I'm sure people can learn some better programming techniques through your comments.
Thanks for your kind comments. You are correct that line is to tare the pressure gauge. I found that the pressure pad always gives some analog value even without a weight on it. I also found it can vary quite a bit depending on temperature and the like. Consequently, I add an extra fudge factor, just to make sure I really have the ball on the pad and am not just measuring noise.
There's not much to tell. The targets have two tabs on them. Just solder different wires to each. It doesn't matter which is the ground or the hot lead. It will work in either direction.
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