Ok thank you cattledog, yesterday i made a very tiny board with just the two ir led and a potentiometer. A friend of mine have a professional tachometer so when i ll be able to try it i will post the results of the three systems
Ok thank you cattledog, yesterday i made a very tiny board with just the two ir led and a potentiometer. A friend of mine have a professional tachometer so when i ll be able to try it i will post the results of the three systems