I have a dual counter board hooked up to a 9490R USB adapter. To test I'm using about 8 feet of telephone wire and I only hooked up DQ and GND to the counter board. I measured 5.0V across them.
If I jumper counter A to the +5V terminal I get a few dozen counts. That's probably switch bounce correct?
If I physically hold the wire going to only counter A with my fingers, the counter will increase at the rate of over 3600 counts per minute. That doesn't seem right.
I'm trying to use the counter to monitor Geiger counter clicks as on this web page: http://voksenlia.net/met/radon/radon_e.php
Am I doing something fundamentally wrong?
Kirk
If I jumper counter A to the +5V terminal I get a few dozen counts. That's probably switch bounce correct?
If I physically hold the wire going to only counter A with my fingers, the counter will increase at the rate of over 3600 counts per minute. That doesn't seem right.
I'm trying to use the counter to monitor Geiger counter clicks as on this web page: http://voksenlia.net/met/radon/radon_e.php
Am I doing something fundamentally wrong?
Kirk