Search found 4 matches

by q209
Wed Jun 08, 2011 12:25 pm
Forum: Code
Topic: A digital Geiger Counter display with Frequency Counter Kit
Replies: 9
Views: 8037

Re: A digital Geiger Counter display with Frequency Counter Kit

This code is running on an external board. I've not experimented with running it on the counter itself, but as this code also deals with interrupts without notable issues I suspect it might work on the board itself. There would, of course, have to be some mods, and I would want to tighten the code u...
by q209
Wed Mar 23, 2011 11:02 am
Forum: Code
Topic: A digital Geiger Counter display with Frequency Counter Kit
Replies: 9
Views: 8037

Re: A digital Geiger Counter display with Frequency Counter Kit

Here is Barry's code revisited. I've adapted it to a sparkfun serial LCD, changed some assumptions based on the data sheet for the Geiger tube, changed the displays, and dropped the continuous background update in favor of a one hour mode (in addition to the one and five minute modes). Enjoy! Commen...
by q209
Thu Mar 17, 2011 5:28 am
Forum: Code
Topic: A digital Geiger Counter display with Frequency Counter Kit
Replies: 9
Views: 8037

Re: A digital Geiger Counter display with Frequency Counter Kit

Well, I may well have answered my own question: a 10K resistor between the counter out and the arduino in seems to resolve my issue. Next question: how was the relationship between counts and exposure determined? We don't know the energy of the particles we're counting, which Q factor is most useful...
by q209
Wed Mar 16, 2011 7:21 pm
Forum: Code
Topic: A digital Geiger Counter display with Frequency Counter Kit
Replies: 9
Views: 8037

Re: A digital Geiger Counter display with Frequency Counter Kit

Barry - On my breadboard experiment, I get large numbers of counts for every pulse on the "OUT" pin of the counter. On a 'scope, I'm not seeing that level of activity, nor am I on the geiger terminal output with hyperterminal. I've also noticed that the arduino input seems very sensitive to noise: w...