Search found 1064 matches

by mightyohm
Wed May 03, 2023 1:46 pm
Forum: Announcements
Topic: all forums are now READ ONLY
Replies: 0
Views: 198515

all forums are now READ ONLY

Hello,

As of today (May 3rd, 2023) all forums are read only - no new replies or posts are allowed, even for registered users.

Please see the shutdown post for more information.
by mightyohm
Wed Apr 05, 2023 2:01 pm
Forum: Announcements
Topic: forums shutting down end of this month (April 2023)
Replies: 0
Views: 175763

forums shutting down end of this month (April 2023)

Hello all, I will be shutting down these forums at the end of this month (April 2023). The forums have been a great asset for over ten years, but unfortunately spam continues to be a constant battle and at this point there is very little legitimate activity in all but the Geiger Counter product supp...
by mightyohm
Thu Mar 02, 2023 9:39 am
Forum: Geiger Counter
Topic: License for derivitive works?
Replies: 1
Views: 43492

Re: License for derivitive works?

Hi there,

The Geiger Counter kit design is licensed CC BY-SA.

This license appears on the schematic sheet for the kit.
https://mightyohm.com/files/geiger/geig ... edR5R6.png

Thanks for asking and please share more details about your project here!
by mightyohm
Mon Jan 23, 2023 12:43 pm
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 41505

Re: Miss-wired Pulse . . now it's dead

That's great to hear. Enjoy your kit!
by mightyohm
Sun Jan 22, 2023 12:33 pm
Forum: Geiger Counter
Topic: Works only when button is pushed.
Replies: 5
Views: 30406

Re: Works only when button is pushed.

Cool! 8-)
Congratulations on figuring that out and fixing your kit!
by mightyohm
Fri Jan 20, 2023 11:26 am
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 41505

Re: Miss-wired Pulse . . now it's dead

OK, thanks for the info. I'm surprised that miswiring the pulse connector damaged the kit but stranger things have happened! I'd like to send a replacement microcontroller U2 to you to see if that fixes it. Can you please send an email to support@mightyohm.com with your mailing address and a short n...
by mightyohm
Thu Jan 19, 2023 8:55 pm
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 41505

Re: Miss-wired Pulse . . now it's dead

If you short across the tube clips, does the voltage on TP1 drop close to zero volts?

How did you miswire J6?

I suspect that U2 might be damaged, but I want to hear more about how you miswired J6.
by mightyohm
Wed Jan 18, 2023 1:34 pm
Forum: Geiger Counter
Topic: Works only when button is pushed.
Replies: 5
Views: 30406

Re: Works only when button is pushed.

Thanks for posting the photos and videos. Few things to check: Some of your solder joints look a little suspect. I circled some of the ones that I am not sure about in the attached photo. Ideally the solder joint should have a hershey kiss shape. I recommend reflowing some of the joints that look ro...
by mightyohm
Tue Jan 17, 2023 7:31 pm
Forum: Geiger Counter
Topic: Works only when button is pushed.
Replies: 5
Views: 30406

Re: Works only when button is pushed.

That's an interesting failure mode and one that I have not seen before! I'd check all of your solder joints. Most likely the power or ground connection to the microcontroller U2 are not connected, or there is a short somewhere else on the board. If you send a high resolution photo of both sides of t...
by mightyohm
Tue Jan 17, 2023 7:29 pm
Forum: Geiger Counter
Topic: Miss-wired Pulse . . now it's dead
Replies: 7
Views: 41505

Re: Miss-wired Pulse . . now it's dead

Sorry to hear that. How was it miswired?

How are you measuring TP1 to ground? Are you saying that the voltage is not 3V (or close to the battery voltage)?
If you remove the microcontroller U2, does that change anything about TP1?