Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!emory!mephisto!prism!ce1zzes From: ce1zzes@prism.gatech.EDU (Eric Sheppard) Newsgroups: sci.electronics Subject: Re: Christmas Lights Message-ID: <4298@hydra.gatech.EDU> Date: 11 Dec 89 21:10:41 GMT References: Organization: Georgia Institute of Technology Lines: 23 In article , kg19+@andrew.cmu.edu (Kurt A. Geisel) writes: > > 2. Has anyone experimented with custom or computer controlled > light strings? How would you go about independently controlling > lights on a string without having a monster thick cable? I modified the design of a circuit that appeared in Modern Electronics last year. The magazine's design used diodes to program a matrix of five strings of lights, and counters stepped through nine programs of flashing displays. I thought it would make a terrific Christmas gift, but the suggested cost of > $100 was unacceptable. I redesigned the circuit to give either five or seven channels (strings) of lights, and up to 16 programs, all stored in an EPROM. The end result was spectacular; total cost is probably around $35. What do you think? Eric, tinkerer-at-large -- Eric Sheppard Georgia Institute of Technology, Atlanta Georgia, 30332 uucp: ...!{allegra,amd,hplabs,seismo,ut-ngp}!gatech!prism!ce1zzes ARPA: ce1zzes@prism.gatech.edu