Search found 1064 matches
- Sun Mar 28, 2021 9:54 am
- Forum: Geiger Counter
- Topic: Gieger Board Troubleshooting
- Replies: 1
- Views: 20547
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...
- Sat Jan 02, 2021 11:27 am
- Forum: Geiger Counter
- Topic: Replacing the firmware
- Replies: 3
- Views: 28349
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...
- Mon Oct 26, 2020 3:04 pm
- Forum: Geiger Counter
- Topic: How to input the source code to Attiny2313?
- Replies: 1
- Views: 40245
Re: How to input the source code to Attiny2313?
Can you explain what you are trying to do?
- Mon Oct 26, 2020 2:54 pm
- Forum: Geiger Counter
- Topic: Mightyohm Geiger Counter & Raspberry Pi
- Replies: 14
- Views: 79608
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.
- Mon Oct 26, 2020 2:51 pm
- Forum: Geiger Counter
- Topic: Serial Pinout for J7
- Replies: 1
- Views: 20547
Re: Serial Pinout for J7
The pinout is compatible with the FTDI USB-serial cable. You'll notice the in the attached image TX/RX are swapped from the pinout listed below - this is because on the FTDI cable, TX and RX are defined with respect to the host, while on the kit the pins are defined with respect to the microcontroll...
- Sat Sep 05, 2020 9:02 am
- Forum: Geiger Counter
- Topic: Web app interface for MightyOhm Geiger Counter
- Replies: 2
- Views: 9085
Re: Web app interface for MightyOhm Geiger Counter
This is really cool, thanks for sharing!
- Sat Sep 05, 2020 9:02 am
- Forum: Geiger Counter
- Topic: Expected battery life?
- Replies: 2
- Views: 22492
Re: Expected battery life?
That's a great question. I haven't characterized the battery life but it should be on the order of a few days. I'll add this to my to-do list and post an update when I have more information.
- Sat Sep 05, 2020 9:00 am
- Forum: Geiger Counter
- Topic: Geiger Counter working but not a peep on the serial port
- Replies: 5
- Views: 13344
Re: Geiger Counter working but not a peep on the serial port
Earl,
Sorry for the late reply.
Glad you got it sorted out. Enjoy your kit!
Sorry for the late reply.
Glad you got it sorted out. Enjoy your kit!
- Mon Jul 20, 2020 4:55 pm
- Forum: Geiger Counter
- Topic: Geiger Counter working but not a peep on the serial port
- Replies: 5
- Views: 13344
Re: Geiger Counter working but not a peep on the serial port
If the ceramic resonator is off-frequency or the fuse bytes are set incorrectly, the kit may still appear to work fine, though the pitch of the beeper will be wrong and the serial port will not work (the baud rate will be wrong). How did you flash the MCU? If you used the Makefile included with the ...
- Mon Jul 20, 2020 1:33 pm
- Forum: Geiger Counter
- Topic: Geiger Counter working but not a peep on the serial port
- Replies: 5
- Views: 13344
Re: Geiger Counter working but not a peep on the serial port
You mentioned in email that you flashed the MCU yourself. If the fuse bytes are not set, the baud rate might be way off and that will cause problems. Other ideas - low batteries may cause problems, try fresh alkaline AA's. Solder joints - sounds like you checked this. Serial cable connected backward...