Search found 1064 matches

by mightyohm
Sun Oct 31, 2021 10:30 am
Forum: Geiger Counter
Topic: DOM 410 beta/gamma probe
Replies: 1
Views: 13971

Re: DOM 410 beta/gamma probe

Sorry, I don't know where to find this probe, but if you're interested in a fun DIY Geiger Counter kit, you've come to the right place!

http://mightyohm.com/geiger
by mightyohm
Sun Oct 31, 2021 10:29 am
Forum: Geiger Counter
Topic: Is Lead-210 a good test source?
Replies: 4
Views: 16679

Re: Is Lead-210 a good test source?

That is great to hear. Thanks for posting about Lead-210, that's a new isotope for me.
Enjoy your kit!
by mightyohm
Thu Oct 14, 2021 11:55 pm
Forum: Geiger Counter
Topic: Is Lead-210 a good test source?
Replies: 4
Views: 16679

Re: Is Lead-210 a good test source?

From my quick research, Pb-210 is primarily a beta emitter. The problem may be that the energy of the beta decay is too low to penetrate the tube. I don't have any experience with Pb-210, so I'm not sure. I recommend finding another test source (preferably a gamma emitter): https://mightyohm.com/blo...
by mightyohm
Tue Oct 12, 2021 7:12 pm
Forum: Geiger Counter
Topic: How to view data from the Geiger counter through the serial port
Replies: 1
Views: 13671

Re: How to view data from the Geiger counter through the serial port

Giancarlo, Yes, it is transmitted as text. You can find information about the data logging capability in the usage instructions here: https://mightyohm.com/blog/products/geiger-counter/usage-instructions/ and also in this tutorial: https://mightyohm.com/blog/2012/02/tutorial-geiger-counter-data-logg...
by mightyohm
Sat Jul 31, 2021 10:04 am
Forum: HV Rescue Shield
Topic: [Solved] Nothing on serial monitor
Replies: 1
Views: 17470

Re: [Solved] Nothing on serial monitor

Glad you got your kit working, and thanks for posting!
by mightyohm
Sat Jul 31, 2021 10:00 am
Forum: Wifi Radio Project / Hacking the Asus WL-520gU
Topic: USB sound problem
Replies: 2
Views: 17206

Re: USB sound problem

Great to hear, good luck with your project!
by mightyohm
Sat Jun 12, 2021 2:34 pm
Forum: Geiger Counter
Topic: Replacing the firmware
Replies: 3
Views: 22886

Re: Replacing the firmware

Yes, you have to use an AVR programmer and the ICSP lines. Thanks for the feedback, I agree that a tutorial would be helpful.
by mightyohm
Sat Jun 12, 2021 2:33 pm
Forum: Geiger Counter
Topic: Serial Console giving scrambled output like "IKL\0xe9\0xd4!/%\0xa39!%" - SOLVED
Replies: 10
Views: 152733

Re: Serial Console giving scrambled output like "IKL\0xe9\0xd4!/%\0xa39!%" - SOLVED

The firmware has never changed, so you are already running the latest version. :D
by mightyohm
Fri May 07, 2021 9:26 am
Forum: Geiger Counter
Topic: Serial Console giving scrambled output like "IKL\0xe9\0xd4!/%\0xa39!%" - SOLVED
Replies: 10
Views: 152733

Re: Serial Console giving scrambled output like "IKL\0xe9\0xd4!/%\0xa39!%" - SOLVED

The kit will not work with an ordinary RS-232 serial port! The voltage levels are wrong. You need a USB-serial adapter that works with 3V voltage levels. Some but not all of them do. I use the FTDI USB-serial cable but the Adafruit FTDI friend also works well (set it for 3V!) If you flashed the firm...
by mightyohm
Wed May 05, 2021 6:49 pm
Forum: Geiger Counter
Topic: Serial Console giving scrambled output like "IKL\0xe9\0xd4!/%\0xa39!%" - SOLVED
Replies: 10
Views: 152733

Re: Serial Console giving scrambled output like "IKL\0xe9\0xd4!/%\0xa39!%" - SOLVED

What USB-serial adapter are you using? Is it compatible with 3V serial levels? Many of them are, but that could be a source of problems.