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Arduino 14: Induction Meter using Parallax LCD and KA393 Comparator

Here’s a small and easy inductance meter made from the Arduino and some other parts. Old TVs are a great source for capacitors, diodes, and even some chips: I found this handy dual lowvoltage…

Pulse Motors: MileHigh OpAmp Comparator Driver Development #1

MileHigh’s suggested op-amp comparator sense circuit for pulse motor driving has its “first light” testing. The schematic will be posted at http://www.overunity.com/13852/self-accelerating-reed-switch-magnet-spinner/msg372454/#msg372454