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Re: A digital Geiger Counter display with Frequency Counter Kit

 by q209 ¦  Wed Jun 08, 2011 12:25 pm ¦  Forum: Code ¦  Topic: A digital Geiger Counter display with Frequency Counter Kit ¦  Replies: 9 ¦  Views: 8327

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...

Re: A digital Geiger Counter display with Frequency Counter Kit

 by q209 ¦  Wed Mar 23, 2011 11:02 am ¦  Forum: Code ¦  Topic: A digital Geiger Counter display with Frequency Counter Kit ¦  Replies: 9 ¦  Views: 8327

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...

Re: A digital Geiger Counter display with Frequency Counter Kit

 by q209 ¦  Thu Mar 17, 2011 5:28 am ¦  Forum: Code ¦  Topic: A digital Geiger Counter display with Frequency Counter Kit ¦  Replies: 9 ¦  Views: 8327

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...

Re: A digital Geiger Counter display with Frequency Counter Kit

 by q209 ¦  Wed Mar 16, 2011 7:21 pm ¦  Forum: Code ¦  Topic: A digital Geiger Counter display with Frequency Counter Kit ¦  Replies: 9 ¦  Views: 8327

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...