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6V Ultra-Bright LED Chaser

 
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Alan
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Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Mon Apr 24, 2006 12:22 am    Post subject: 6V Ultra-Bright LED Chaser Reply with quote

"This is a spectacular but completely useless project. It lights Ultra-Bright LEDs in a sequence and each LED flashes brightly very briefly. The LEDs light-up going around and around since they are mounted in a circle (on a CD), then they pause before chasing again. The very brief flash of each LED (15ms) and the pauses (1 second) reduce the average current so the battery should last a long time."

http://www.electronics-lab.com/projects/games/004/index.html

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jaredharley
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Joined: 04 Apr 2006
Posts: 9
Location: Greeley, CO

PostPosted: Mon Apr 24, 2006 12:30 am    Post subject: Reply with quote

Fun! I think I'm going to have to try this one!
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anotherhackmember
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Joined: 10 Jun 2006
Posts: 32
Location: CA

PostPosted: Sat Jun 10, 2006 10:34 am    Post subject: Reply with quote

Here is a good project. It lights Ultra-Bright LEDs 8,000MCD+ for many sequences. Each LED flashes brightly very briefly by PWM for a very low power consumption. Powered from 3v to 5v and just with a single button cell 3v lithium will continue brightly for over 50 hours. The patterns are not simplistic. Well even the simple ones are still advanced. The LEDs can fade in and out, fade at slow rates and at high rates. The LEDs are like independemt channels. Some leds can be bright at the same time that other leds are dimm and others are turned off. As you see in the schematic, there are different modes of operations. Plus the chaser keeps memory of mode and current pattern even after powering off and on again.

Link:
http://www.anothercoilgunsite.com/8led




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BronzeG3
HG Master


Joined: 30 Apr 2006
Posts: 134

PostPosted: Sat Jun 10, 2006 1:30 pm    Post subject: Reply with quote

PWM can be very fun. I just started using it to control the brightness of some LEDs. I want to try it out with my lego motors and some mosfets just to see how well it will work.
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Alan
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Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Sun Jun 11, 2006 11:04 am    Post subject: Reply with quote

anotherhackmember wrote:
Here is a good project. It lights Ultra-Bright LEDs 8,000MCD+ for many sequences. Each LED flashes brightly very briefly by PWM for a very low power consumption. Powered from 3v to 5v and just with a single button cell 3v lithium will continue brightly for over 50 hours. The patterns are not simplistic. Well even the simple ones are still advanced. The LEDs can fade in and out, fade at slow rates and at high rates. The LEDs are like independemt channels. Some leds can be bright at the same time that other leds are dimm and others are turned off. As you see in the schematic, there are different modes of operations. Plus the chaser keeps memory of mode and current pattern even after powering off and on again.


Welcome anotherhackmember,

Great project. I can tell you spent lots of time perfecting the sequences.
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anotherhackmember
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Joined: 10 Jun 2006
Posts: 32
Location: CA

PostPosted: Wed Jun 14, 2006 6:58 pm    Post subject: Reply with quote

Thanks. Yes a lot of time. The present chip (16F648) holds 4k bytes of program flash. 13 complex patterns consume only 2k of flash using 16F628. With thousands of lines of code the chip is only 1/2 way used! I wish o-eses were as compact. Well would be if not for you know who $
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a. nonymous
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PostPosted: Mon Jun 19, 2006 8:11 pm    Post subject: Reply with quote

so um, how can we make our own? or are you selling them in kit form...?
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anotherhackmember
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Joined: 10 Jun 2006
Posts: 32
Location: CA

PostPosted: Thu Jun 22, 2006 6:48 pm    Post subject: Reply with quote

I am not here to sell, but you can do a lookup of led chaser on ebay, thats were they are sold.
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zak4000
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Joined: 24 Jun 2006
Posts: 2
Location: England, West Norfolk (East-ish England) (Confusing isn't it?? (Sort-of))

PostPosted: Sat Jun 24, 2006 2:07 am    Post subject: Reply with quote

Any chance of a code thingy for this?
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anotherhackmember
HG Contributor


Joined: 10 Jun 2006
Posts: 32
Location: CA

PostPosted: Fri Jun 30, 2006 7:59 pm    Post subject: Reply with quote

zak4000 wrote:
Any chance of a code thingy for this?

Nop Surprised

I have been contemplating the start of a POV project. Thanks to this site, after seeing the POV links I decided to just through a POV pattern to this existing 8-LED device. It works! Strapped it to my bike and it works!! POV code for simple text is simple and consumes 1/5 the space as my normal pattern code. The good thing is that I can simple add a POV pattern to my normal patterns. Strap it to bike for POV or pull it off and put on PC for PC mod.

I will show some POV code that took me like the whole all of 2 minutes to make Very Happy
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Alan
Site Admin


Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Sat Jul 01, 2006 12:45 am    Post subject: Reply with quote

anotherhackmember wrote:
zak4000 wrote:
Any chance of a code thingy for this?

Nop Surprised

I have been contemplating the start of a POV project. Thanks to this site, after seeing the POV links I decided to just through a POV pattern to this existing 8-LED device. It works! Strapped it to my bike and it works!! POV code for simple text is simple and consumes 1/5 the space as my normal pattern code. The good thing is that I can simple add a POV pattern to my normal patterns. Strap it to bike for POV or pull it off and put on PC for PC mod.

I will show some POV code that took me like the whole all of 2 minutes to make Very Happy


Sounds cool, can't wait to see it. Cool
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Nuwanda
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PostPosted: Fri Jul 07, 2006 12:12 pm    Post subject: Reply with quote

hi guys
both projects look really neat, but i was wondering if there was anyway to increase the number of leds on the first one? Its currently for 10...can i add another decoder and that ic1 to make it for 20 leds?
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anotherhackmember
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Joined: 10 Jun 2006
Posts: 32
Location: CA

PostPosted: Fri Jul 07, 2006 8:00 pm    Post subject: Reply with quote



Last edited by anotherhackmember on Sat Jul 08, 2006 12:54 pm; edited 1 time in total
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Nuwanda
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Joined: 08 Jul 2006
Posts: 1

PostPosted: Sat Jul 08, 2006 3:00 am    Post subject: Reply with quote

hmm....i get the first part, but about the reset. right now, 15 is connected to pin 12 of the 7414 which pauses/resets the counter doesnt it? how will the reset work if i connect it to the last led on the second 4019?

edit : oh and how will this affect the power supply? do i need to increase the voltage?
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