Search found 4 matches

by rea5245
Tue Jul 22, 2014 6:28 pm
Forum: General Discussion
Topic: RSS feed for the blog?
Replies: 1
Views: 868

RSS feed for the blog?

Hi,

Is there an RSS feed for the Nuts & Volts blog?

Thanks,
Bob
by rea5245
Fri Apr 04, 2014 10:55 am
Forum: General Discussion
Topic: New web site for finding the cheapest PCB manufacturer
Replies: 0
Views: 1386

New web site for finding the cheapest PCB manufacturer

Hi, Every time I work on a new project, I spend a lot of time shopping around for the cheapest PCB manufacturer. Turns out, it varies based on the board's specs. To simplify things, I've make a web site where you enter the size, layers, solder mask color, and quantity of your boards, and it tells yo...
by rea5245
Sat Aug 09, 2008 5:00 am
Forum: General Discussion
Topic: Help on photoresistor - how to reverse?
Replies: 9
Views: 2623

Thanks to all

Thank you all for your advice. It does, indeed, seem easier to just stick with a constant voltage and use PWM. My motive for exploring the LM317 alternative was that it seemed as if it would be cool to replace a big chunk of code with a single semiconductor. But if it won't work well, that settles t...
by rea5245
Thu Aug 07, 2008 6:19 pm
Forum: General Discussion
Topic: Help on photoresistor - how to reverse?
Replies: 9
Views: 2623

Help on photoresistor - how to reverse?

Hi, I'm designing my first circuit - a PIC controlled digital clock. The PIC is currently sensing a photo resistor via A/D and changing the brightness of the LEDs with PWM. But I had an idea of a different way to do it... The PIC can operate at 3.3V or less. The LEDs need 2.7V. I'm currently driving...