The p/ns for the leds that I used from www.sparkfun.com are Red -- COM-00528 Yellow -- COM-00530 ( it lights up as amber ) Green -- Com-08285
These are T-13/4 round leds. They do fit in the spaces provided although they do cover up part of the the silkscreened SWR values. I filed off some of the flanges so more of the silkscreened SWR values show. I did not change the power leds. I used 3 green ones ( 1.1, 1.2, 1.3 ), 2 yellow ones ( 1.5, 1.7 ) and 5 red ones. I do not have any pictures, I am in the process of moving and much of my stuff is packed up. I will get the W1 out and take a couple of pictures as soon as I can. Joel N1JEO ----- Original Message ----- From: "Bill Johnson" <[email protected]> To: "'Joel Curneal'" <[email protected]>; <[email protected]> Sent: Sunday, March 08, 2009 1:23 PM Subject: RE: [Elecraft] [MM] The W1 LED Experiment > Joel, > > Do you have the part #'s as I note there are a couple different in each > color? I note these are round versions and I wonder if these are difficult > to line up in the display due to any manufacturing differences. Do you have > a Picture of your finished product? > > 73, > > Bill > K9YEQ > K2 #35; KX1 #35; K3 #1744; mini mods > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Joel Curneal > Sent: Thursday, March 05, 2009 4:22 PM > To: [email protected] > Subject: Re: [Elecraft] [MM] The W1 LED Experiment > > Has anyone else tried high intensity leds in their W1? I replaced the leds > in my W1 with high intensity red, yellow (amber), and green leds from > Sparkfun Electronics. A pic can drive them to a much higher light output > without any other changes to the W1 circuit board. The light output from > the different colors is almost the same on a stock W1 board. > > Joel, N1JEO > > ----- Original Message ----- > > > > I apologize for taking so long to conduct the LED experiment and get > > back with everyone interested. I had some lead times on parts I ordered > > not to mention getting some time to run everything through. I must > > mention first that I had to do numerous swaps of different LEDs and > > resistor packs and this simply would not have been possible to do in a > > timely manner without using my new Hakko 808 desoldering tool. I'm sure > > I would have damaged the W1 PCB trying to do it manually over and over > > again. That thing was worth every penny I paid for it. > > > > The slight differences in forward voltages of the various LEDs played no > > appreciable role in current consumption. So I'll just list the 3 > > resistor pack values I used. I did look up the LM78L05 regulator spec > > sheet and found out it will produce up to 100ma output current. The > > current W1 design operates at far less than that. The LEDs are probably > > pulse width modulated (or simply polled) by the PIC also so the current > > draw per LED seems to be about half of what you would calculate with a > > voltage of around 3v and the resistor pack value. > > > > Here is some of the data: > > > > W1 idle current: 13.8 ma > > > > Current draw regardless of LED type per resistor pack value (18 out of > > 20 LEDs lit): > > > > 2.0k - 27.5ma > > 1.0k - 39.3ma > > 470 - 63.0ma > > > > I wanted to try an 810 or 680 ohm resistor pack, but could not get them > > in time from Digi-Key. As I personally wanted to stay within the 50ma > > range, the 1.0k value works for me. Like I said, to my eyes in a well > > lit environment, this value seemed to work fine with the Lumex LEDs > > although the Avago red LEDs were a hair brighter. > > > > Part numbers: > > My configuration: > > > > All Digi-Key part #'s > > > > Lumex Red 2x5mm LED - 67-1047-ND > > Lumex Yellow 2x5mm LED - 67-1050-ND > > Lumex Green 2x5mm LED - 67-1046-ND > > > > > > > > 73, > > Dave W8FGU > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
