Hi,
First of all a slight disclaimer: I'm very much a beginner to LabVIEW, so please bear with me!
I'm currently trying to measure the rpm of a shaft using a digital optical sensor. I've connected it to my DAQ (NI USB-6008), and subsequently into LabVIEW (2014). So far I've tried a number of different methods based on what I've seen on these forums and general guesswork, but I don't really know what I'm doing and time is running out!
My question is: What is the best way of getting the rpm of the shaft? The most obvious way seems to be getting the frequency of the pulses from the sensor, but quite how to do that seems to be eluding me!
The closest I've got is by using the method described in this thread http://forums.ni.com/t5/LabVIEW/How-do-you-count-the-frequency-of-a-boolean-signal/m-p/1087995#M481408
However the frequency that I get is all over the place, and generally not accurate to what it should be (up to and over 5,000rpm)
Any help would be greatly appreciated (feel free to tell me if I'm being an idiot and missing something obvious!)
Thanks in advance!