How detect the speed changes of fan using a controller ic? Answered
i have a ceiling fan manual regulator, the voltage output that i got when
different speed is 80v,120v,180v,200v respectively
in my project i want to detect the fan speed changes.
that means if fan is running in 1st speed then user turn into second speed it should be detect(by using in Arduino) .
how can detect this?
I tried to use a current sensor(ACS712) at output of a regulator then detect the current for different speed..but the variation still small cannot be detectable.