Tag: led

43 Comments

LED logger

  By electrobob October 22, 2012 February 8, 2017 Ideas and Articles, Projects

Do LEDs really last as much as they say? I’m building a tester to find out. Continue reading

9 Comments

Upgrading spotlights to LED

  By electrobob June 20, 2011 February 8, 2017 Projects, Utils

Turned my hallway spotlights to some nice LED lights. Continue reading

14 Comments

Secret knock detector with 555

  By electrobob February 28, 2011 February 8, 2017 Projects

Detecting a secret knock pattern using 555’s. Continue reading

42 Comments

LED UV exposure box part 2, the timer

  By electrobob September 29, 2010 February 8, 2017 Projects

Buiding a timer for a PCB UV exposure box. Continue reading

47 Comments

LED UV exposure box part 1, the box

  By electrobob June 24, 2010 February 8, 2017 Projects

Building a nice UV exposure box to make PCBs. Continue reading

16 Comments

CoMBi Clock

  By electrobob June 5, 2010 February 8, 2017 Projects

A binary clock that displays hours minutes and seconds using colors on LEDs. Super difficult to read! Continue reading

7 Comments

Linear LED power supplies

  By electrobob March 15, 2010 February 8, 2017 Ideas and Articles

How to drive LEDs? WIth constant current supplies, of course. Continue reading