Member Since: May 19, 2011

Country: United States



Wannabe hardware hacker


Workshop 88

  • I used these green, yellow, red in a light box for the Toastmasters club. They have a person manually controlling the lights to tell the speaker when to shut up. I cut the lens off the tip of the LEDS at an angle to bend the light more to the front which worked well. Used a Dremel tool with cutoff disk, polished with 600 grit sandpaper then a buffing wheel for final polish. I noted the yellow LEDs at 20 milliamps were nowhere near as bright as the red at 15 ma or the green at 12 ma. Those currents were obtained from a 9 volt battery, with two LEDs in series with a 200 ohm resistor. https://dl.dropboxusercontent.com/u/40929640/TimerProject.mp4

  • I’m curious how large the backorder queue is after Arduino day.

  • http://www.schleuniger.com/
    But you probably can’t afford one.
    When I worked for a Telco, the cable vendors were required to use a Schleuniger stripper.

  • In the June 2011 QST magazine, there is an article describing this DDS chip used in a synthesizer for old Ham transmitters. The circuit uses a simple LT1253 amplifier to buffer the DDS output which would be useful to incorporate on this Sparkfun board. He uses a PIC16F877 controller, I would like to know if it is possible to duplicate the circuit and software with an Arduino instead.
    There is a file of information at:
    but you have to be a member to access.

No public wish lists :(