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AcidMods Resources ----- ( These are helpful tools for modding ) => Electronics Projects => Topic started by: scott on August 22, 2009, 07:22:01 PM

Title: LED Heart for girlfriend.
Post by: scott on August 22, 2009, 07:22:01 PM

I want the LED to pulse, or at least flash.
I started working on the 555 timer circuit tonight for it. Its about halfway done.

note: the circuit is not yet on the board, so it looks like complete mess, bear with me, i have no breadboard.

only pic sofar:

(https://acidmods.com/forum/proxy.php?request=http%3A%2F%2Fi296.photobucket.com%2Falbums%2Fmm199%2Fholygfx%2FIMG_2089.jpg&hash=23ae1206827e828162cb8fb3eb64a94169dbea7c)

Title: Re: LED Heart for girlfriend.
Post by: P3nnyw1se on August 22, 2009, 07:27:57 PM

You could turn it into a keychain with an on and off switch so she could put it with her keys...just an idea, =D

Title: Re: LED Heart for girlfriend.
Post by: scott on August 22, 2009, 07:35:51 PM

The heart is 5(1/2)" x 4" and containing 150 LEDs.

I doubt it would fit on a keychain.

Title: Re: LED Heart for girlfriend.
Post by: ~:Dhruv:~ on August 22, 2009, 09:45:06 PM

Make a 15 led grid n then make a heart keychain , she'll love it more imho :D

Title: Re: LED Heart for girlfriend.
Post by: 802Chives on August 25, 2009, 05:48:53 PM

Whats the plan of attack?
Power Supply?
What are you going to use to switch the LEDs? Looks like you have some transistors?

Let me know if you need a hand, this is right up my alley.  Might even be able to come up with a .hex of a heart beating fading in and out :winker:

Title: Re: LED Heart for girlfriend.
Post by: scott on August 25, 2009, 06:40:50 PM

It wont be programmable, I dont have a programmer and im using a 555 anyway.

Powersupply, either 6v or 9v

Title: Re: LED Heart for girlfriend.
Post by: phenoptix on August 26, 2009, 03:08:15 AM

Have a look here
http://www.instructables.com/id/Build-a-binary-heart-decoration-Blinkenheart/ (http://www.instructables.com/id/Build-a-binary-heart-decoration-Blinkenheart/)
Pretty similar to what you seem to be trying to achieve.
There was another guy on that site who did a beating heart LED tshirt that no doubt impressed the lady in his life!

Title: Re: LED Heart for girlfriend.
Post by: scott on August 26, 2009, 12:18:03 PM

I saw those. Im trying to stick to just using a 555.

If someone would like to program a different chip for me. That would be great.

Title: Re: LED Heart for girlfriend.
Post by: FOOKz™ on November 22, 2009, 05:40:31 PM

If you would like to get really complicated you could make the LEDs flash randomly with a 4017 CMOS Decade Counter.

Here is a Diagram i found for you:
*You Can Substitute the Schmidt trigger on pin 14 with your 555 Timer Clock circuit you already built.
https://homepages.westminster.org.uk/electronics/images/4017_08.gif