Hi,
I have been attempting to use the hall sensors on a robot motor to keep the speeds of two motors in step. I am using interrupts on a KL25Z to determine the pulses and I have checked that I can measure frequencies way higher than the pulse rate would be. However my issue is that the signals from the sensors jitters and has high frequency noise (the high frequency noise might be causing my interrupts to trigger incorrectly I guess) . So my questions is if I pay enough money can I expect to be able to get clear motor speed readings, ie should I be able to control the speeds of two motors for a robot using the output of the hall sensors? Do I perhaps need to process the pules maybe a Schmitt trigger or something? Is there a recognized good brand of motors with sensors?
Thanks for any help.