Search found 185 matches

by evahle
Sun Nov 11, 2018 9:22 am
Forum: General Discussion
Topic: Microphone in a bubble...
Replies: 7
Views: 210

Re: Microphone in a bubble...

Myself, I'd setup a test station with the microphone to be tested, and an amp capable of 20-20khz output to a scope. The mic would be setup to accept the material to be tested, and easily changed to any material I'd want to test it with. Then I'd have a sound sweep generator with speaker in front of...
by evahle
Tue Oct 30, 2018 8:27 am
Forum: General Discussion
Topic: Neat solution to a sticky problem!
Replies: 1
Views: 119

Re: Neat solution to a sticky problem!

Nice!
by evahle
Tue Oct 30, 2018 8:23 am
Forum: General Discussion
Topic: 1,000 LED Sequencer
Replies: 45
Views: 6102

Re: 1,000 LED Sequencer

That would be an interesting looking switch. Haha.
I've seen (on tv) a board with lots of nails in a row that they'd slide a wire across, to fire small explosives to imitate a machine gun. Now I'm showing my age too. Haha.
by evahle
Mon Oct 22, 2018 8:49 am
Forum: General Discussion
Topic: A Simple but Accurate Constant Current Source
Replies: 19
Views: 2673

Re: A Simple but Accurate Constant Current Source

MrAl, a couple of things. First thanks for your input. I didn't mention in the project that I used heatsink compound on the LM317L and made sure that it came in contact with the metal cover. Second, this design only goes up to about 100mA because it uses a 9v battery. I wanted to keep the current lo...
by evahle
Tue Oct 16, 2018 5:53 pm
Forum: General Discussion
Topic: 1,000 LED Sequencer
Replies: 45
Views: 6102

Re: 1,000 LED Sequencer

Ok, here is the final schematic to the 1,000 led (one led on at a time) sequencer.
by evahle
Tue Oct 16, 2018 5:46 pm
Forum: General Discussion
Topic: Forum Update! Secure!
Replies: 16
Views: 664

Re: Forum Update! Secure!

Working for me so far Sean. Thanks!!
by evahle
Tue Oct 16, 2018 5:43 pm
Forum: General Discussion
Topic: Need help with a circuit again
Replies: 29
Views: 819

Re: Need help with a circuit again

1moldmaker wrote:
Mon Oct 01, 2018 5:52 am
thanks, here is a link to my circuit https://drive.google.com/file/d/1xk6dTF ... sp=sharing
I thought I'd try to upload your schematic directly here.
by evahle
Tue Oct 16, 2018 5:39 pm
Forum: General Discussion
Topic: Message Board update
Replies: 54
Views: 6451

Re: Message Board update

Yes! So far so good. I can't wait to start uploading my projects and schematics! :)
by evahle
Tue Oct 16, 2018 5:36 pm
Forum: General Discussion
Topic: T & L Publications Forum Revamp!
Replies: 11
Views: 618

Re: T & L Publications Forum Revamp!

I've been successful in uploading pics and schematics now. Maximum is 3 photos per post and can't post more photos too soon afterwards. I assume I can upload the remaining pics later.
by evahle
Tue Oct 16, 2018 5:26 pm
Forum: General Discussion
Topic: A Simple but Accurate Constant Current Source
Replies: 19
Views: 2673

Re: A Simple but Accurate Constant Current Source

Here are the pics of the project as it progressed.
by evahle
Tue Oct 16, 2018 5:18 pm
Forum: General Discussion
Topic: A Simple but Accurate Constant Current Source
Replies: 19
Views: 2673

Re: A Simple but Accurate Constant Current Source

Alrighty then, the picture uploading has been fixed!! I'll try to upload the schematic for this project.
by evahle
Wed Oct 10, 2018 10:33 am
Forum: General Discussion
Topic: 1,000 LED Sequencer
Replies: 45
Views: 6102

Re: 1,000 LED Sequencer

Wow, this is an old project, but still a goodie! A schematic is in order I think.
by evahle
Sat Oct 06, 2018 1:09 pm
Forum: General Discussion
Topic: Previous forums you were in...
Replies: 1
Views: 286

Re: Previous forums you were in...

I used to frequent other forums but can't remember which ones except Popular Electronics (Poptronics I think). I used to download the responses to many of the posts. I might still have them on my best computer for work and electronics, which is a Windows XP and 160 gbyte drive. I keep that thing off...