Search found 1030 matches

by mightyohm
Sat Jul 31, 2021 10:04 am
Forum: HV Rescue Shield
Topic: [Solved] Nothing on serial monitor
Replies: 1
Views: 323

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: 187

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: 4028

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: 14015

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: 14015

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: 14015

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.
by mightyohm
Sun Mar 28, 2021 9:54 am
Forum: Geiger Counter
Topic: Gieger Board Troubleshooting
Replies: 1
Views: 1760

Re: Gieger Board Troubleshooting

It sounds like the HV supply is not working. I'd start by reflowing any solder joints that look suspect. You can a nice smooth solder joint that fully surrounds each lead. It should look like a hershey kiss when you are done (not too little solder, not too much). Check that all of your transistors a...
by mightyohm
Sat Jan 02, 2021 11:27 am
Forum: Geiger Counter
Topic: Replacing the firmware
Replies: 3
Views: 4028

Re: Replacing the firmware

Hi there, This is a good suggestion - I don't think that I ever wrote a tutorial on how to do this. You'll need an AVR programmer and a toolchain. The tools have changed a bit since I wrote the code for the kit, but at the time I used Atmel's AVR Studio for development. However, there are open toolc...
by mightyohm
Mon Oct 26, 2020 3:04 pm
Forum: Geiger Counter
Topic: How to input the source code to Attiny2313?
Replies: 1
Views: 4825

Re: How to input the source code to Attiny2313?

Can you explain what you are trying to do?
by mightyohm
Mon Oct 26, 2020 2:54 pm
Forum: Geiger Counter
Topic: Mightyohm Geiger Counter & Raspberry Pi
Replies: 11
Views: 31429

Re: Mightyohm Geiger Counter & Raspberry Pi

I don't think I'd recommend powering the kit from a GPIO. While the average current might be a few mA the peak current is higher.