oscillating LED circuit

daviddoria

New Member

• Feb 13, 2003

• #1

i made a cool thing for my computer, seen here: http://www.bandtank.com/stuff/movies/MVI_1646.AVI

its just a 555 timer that is speed controlled by a 100k pot (i think i got the diagram from this forum!)

i was wonder how to make this into something that would make the LEDs "run" back and forth instead of blink 4 at a time.

can anyone give me any input on this?

thanks
david

 

kinjalgp

Active Member

• Feb 13, 2003

• #2

You can use counters like 4017.

 

bogdanfirst

New Member

• Feb 13, 2003

• #3

you need to use up/down counter, or 2 up counters connected acording to your needs.

 

daviddoria

New Member

• Feb 15, 2003

• #4

I have here a NTE74192 counter. I am looking at the pinouts... but still don't see how i would make this into a running strip of LEDs. does anyone have a basic example circuit?

thanks
david

 

hantto

Member

• Mar 3, 2003

• #5

Del

 

daviddoria

New Member

• Mar 3, 2003

• #6

maybe its just me but the movie link doesnt work..

 

Gene

New Member

• Mar 4, 2003

• #7

Hantto - seems to work fine - everyone likes blinking lights. BTW, where did you get your circuit board? Mine board is so tiny, I can hardly build a circuit with more than 3 ICs.

 

hantto

Member

• Mar 4, 2003

• #8

Hi Gene. I got my breadbord from my local components store.

 

Gene

New Member

• Mar 4, 2003

• #9

come on man - give me a little more to go on. Brand of board, store name where you got it, model #, cost, etc. Mine is from Radio Shack and will hold 2-3 ICs - much smaller than yours looks in the pict.

 

hantto

Member

• Mar 4, 2003

• #10

As you wish, but i guess this won't help you at all! :wink:
It costed around 20€
Model: EIC-104
Store: Komponenttipiste
Country: Finland
:roll:

 

Gene

New Member

• Mar 4, 2003

• #11

You Bet! A part number was all it took. THANKS!!

http://www.cti-texas.com/cti-texas/protoboards.html

Posted just in case someone else is interested.