Close

12/29/2016 - Really cheap LED's

A project log for The Cardboard Computer - IO is my name

My goal is a 4-bit CPU using recycled cardboard substrate and Diode Transistor Logic. This will develop into an educational platform

Dr. Cockroach 12/30/2016 at 14:184 Comments

Found a string of Christmas led lights at a local thrift store for 1 dollar. There are about 200 led's and it looks like they operate around 3.5 volts and 3.75 ma each. These should be perfect for the output display section.

Discussions

Yann Guidon / YGDES wrote 12/30/2016 at 15:34 point

It's a start :-)

  Are you sure? yes | no

Dr. Cockroach wrote 12/31/2016 at 00:38 point

Yup, I like finding  stuff like this :-) Reminds me of finding tv sets being tossed out and my salvaging the parts.

  Are you sure? yes | no

Yann Guidon / YGDES wrote 12/31/2016 at 00:41 point

but, you know, we're in 2016... :-)

  Are you sure? yes | no

Dr. Cockroach wrote 12/31/2016 at 00:53 point

True but around here there are still some older pre digital sets finding their way to the curb.  Most of the parts are great for my ham radio projects and the color burst crystal is in the 80 m cw band

  Are you sure? yes | no