Search found 2 matches

by philip
Wed Oct 26, 2011 7:44 am
Forum: Geiger Counter
Topic: Enclosure suggestion?
Replies: 4
Views: 17984

Re: Enclosure suggestion?

I'm looking for a waterproof case. I want to mount the geiger counter outside where it will detect anything nasty blowing in on the breeze (or rain). I'm intending to power it from the 3.3v output from my usb-serial dongle, so I only need to run the USB cable back into the house. My concern is that ...
by philip
Sat Oct 08, 2011 8:49 am
Forum: Geiger Counter
Topic: Suggestions for next rev
Replies: 7
Views: 22881

Re: Suggestions for next rev

I also support bringing the power supply rail out to the serial connector (for the same reason). Actually, the other thing that I'd like would be to add three more resistors and a capacitor to make a cheapo ADC for measuring the HT. A 1G/2M ohm voltage divider on one of the AIN lines, and a simple R...