uC FM Frequency meter

[Dragon Tamer]

I wanted to make a frequency meter for my radio using a micro-controller.

I have 2 questions, first will the micro controller (DS2250) change the frequency of the tank circuit?

Secondly, can I have the micro-controller even read the very high frequency of the tank circuit? (11MHz oscillator)

 

[nsaspook]

I wanted to make a frequency meter for my radio using a micro-controller.

I have 2 questions, first will the micro controller (DS2250) change the frequency of the tank circuit?

Secondly, can I have the micro-controller even read the very high frequency of the tank circuit? (11MHz oscillator)

Take a look at this thread... https://www.electro-tech-online.com/threads/help-to-develop-software-for-freq-counter.32944/

 

[Nigel Goodwin]

I wanted to make a frequency meter for my radio using a micro-controller.

I have 2 questions, first will the micro controller (DS2250) change the frequency of the tank circuit?

You need a high impedance buffer.

Secondly, can I have the micro-controller even read the very high frequency of the tank circuit? (11MHz oscillator)

11MHz isn't 'very high', and the standard PIC designs work to at least 50MHz.