Hi, I got given this project, in which I have to some hardware in it, iv never done hardware before and really need to get started.
Now my aim is to measure how fast a propeller is spinning, another student will worry about storing that data somewhere. I could do that by measuring the voltage produced by a turbine as the turbine is connected to an alternator. The voltage produced by the alternator will vary between 0 and 300mV(p-p) depending on the rotational speed of the turbine. My frequency will also be speed dependent and will vary between a small range of (0-5Hz). Im using a PIC16F87X PIC, that has an inbuilt ADC converter. What I need to know is that does the analogue input has to be DC. If not Could I just measure the AC, and write a program that just measures what the amplitude of the waveform is? Sorry for the broad questions, but any feedback will be appreciated.
Thanks
Now my aim is to measure how fast a propeller is spinning, another student will worry about storing that data somewhere. I could do that by measuring the voltage produced by a turbine as the turbine is connected to an alternator. The voltage produced by the alternator will vary between 0 and 300mV(p-p) depending on the rotational speed of the turbine. My frequency will also be speed dependent and will vary between a small range of (0-5Hz). Im using a PIC16F87X PIC, that has an inbuilt ADC converter. What I need to know is that does the analogue input has to be DC. If not Could I just measure the AC, and write a program that just measures what the amplitude of the waveform is? Sorry for the broad questions, but any feedback will be appreciated.
Thanks