Hello,
I want to create an analog voltage depending on the speed of a wheel.
Its powered from an arduino, goes through a voltage divider for an inductive sensor and then I would like to convert the PWM to an analog voltage with a lpf.
when I read out the pwm before the lpf with the arduino via analogread it shows me steady 509 and when the magnet passes I get a 0.
when I send it through the lpf the signal does not change in relation to the wheel speed.
what is wrong in the circuit?
thanks in advance
I want to create an analog voltage depending on the speed of a wheel.
Its powered from an arduino, goes through a voltage divider for an inductive sensor and then I would like to convert the PWM to an analog voltage with a lpf.
when I read out the pwm before the lpf with the arduino via analogread it shows me steady 509 and when the magnet passes I get a 0.
when I send it through the lpf the signal does not change in relation to the wheel speed.
what is wrong in the circuit?
thanks in advance