Dec 312013
 

http://forum.43oh.com/topic/1913-frequency-counter-using-launchpad-nokia-5110-lcd/

oPossum Posted 11 March 2012 – 01:37 AM

Frequency Counter using Launchpad & Nokia 5110 LCD

 

This is a simple frequency counter with a range of 1 Hz to 16 MHz. It uses the 32 kHz watch crystal so the accuracy is good enough for many applications. Gate time is automatically set to 250 ms or 1 second.

There is no signal conditioning (front end), so it is limited to 3V logic levels signals only! It is intended to be used with digital circuits like another MSP430 or 74HCxx circuits. It is not a substitute for a proper commercial frequency counter.

How a frequency counter works: Fundamentals of Electronic Counters by Agilent

Wiring
Attached File  counter430.png   30.73KB   1837 downloads

http://www.youtube.c…h?v=z6-KxPXNLNA

http://www.youtube.c…h?v=JGjy-8yyLAE

 Posted by at 7:29 am

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