I'm messing around with quartz crystals and I wanted to try to measure their frequency using the arduino.
I found this page, http://interface.khm.de/index.php/lab/experiments/arduino-frequency-counter-library/
and I've tried hooking a crystal to the F_in point in the second schematic, leading it directly to an input on the 74HC14. I'm using 74HCT
14, but I don't think that this will be the problem that I can not get any reading out.
The other lead of the crystal is connected to ground. Maybe I'm doing something wrong ? In the picture the guy is measuring a frequency off a crystal, I'm aiming to do the same.
Any ideas on what I might be doing wrong ?
Thanks in advance,