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by mohd.ahli
Tue Oct 29, 2013 9:36 am
Forum: Projects
Topic: Arduino Tachometer
Replies: 2
Views: 12047

Arduino Tachometer

Hi Chris I tried your project but i seem to be having funny readings about the RPM on my lcd... sometime i get very high values and sometimes i get a negative rpm value. The only thing i changed on the circuit is that i used 2 2n3904 NPN transistors and the resistor for T3 i used was 24kilo ohms.......

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