How To - Frequency Detection

Hey guys! So I just bought a LM331 voltage to frequency counter And I'm planning on connecting it to a magnetic guitar pickup so I can read to frequencies, but my question is, how can I see those frequencies in my code on my computer?

Here's a link to the LM331 if anyone wants any more info on it
http://www.ti.com/product/LM331

What is the purpose of this project?

The LM331 on it's own won't do anything useful. I imagine you're planning to use it in frequency to voltage mode? What circuit are you going to use with it? You will need a pre-amp between the pickup and the F/V circuit and it's not going to be easy to get it very accurate.

Steve

I'm actually planning on making my guitar into a midi instrument so I needed the frequencies of it first, and I thought that the LM331 could convert my guitars voltages into frequencies but I take it you think there's a better way? If you have any tips please share!

A few people have tried it before though I can't remember seeing a working one that didn't involve ripping the guitar apart and using very different pickups. Google "Arduino midi guitar".

I don't think you'll get the precision you need with an LM331 but then I've never tried it.

Steve

reggiearthur:
I'm actually planning on making my guitar into a midi instrument so I needed the frequencies of it first, and I thought that the LM331 could convert my guitars voltages into frequencies but I take it you think there's a better way? If you have any tips please share!

Are you intending to pick one string at a time? That is what your frequency measurement will give you.

Paul

Perhaps try one of these
https://www.bhphotovideo.com/bnh/controller/home?A=details&O=&Q=&ap=y&c3api=1876%2C{creative}%2C{keyword}&gclid=EAIaIQobChMIm6LAoaLY2AIVnrrACh16aAbpEAQYAyABEgK8gfD_BwE&is=REG&m=Y&sku=1251091