3V LED Chaser project

[DickW]

Hi All

Any chance of a PCB layout Guru? Why not just use a cheapo plug in power supply or wall wart as
the Yanks call em? Indoors of course.

[audioguru]

Hi Dick,
Sorry there isn't a pcb for this project. I have made many with Veroboard. Besides, I've advanced to the 6V Ultra-bright Chaser project, and have converted nearly all 3V ones to its pausing circuit, but still running on 3V:
http://www.electronics-lab.com/projects/games/004/index.html

I designed them for extremely low power consumption so their cheap AA alkaline cells should last a long time. The 1st two I made more than 5 months ago have never been turned down and are still flashing with their original battery. So I don't think a wall-wart power supply is necessary. 

[Codyhtml]

just get a LARGE cap and a power supply like that and it would run forever even during a power outage untell the led or somthing blows of corse

[NefroniK]

One question: are these capacitors C3, C4 and C5?

[audioguru]

Hi Nef,
Welcome to our forum.
The ceramic capacitors do not have correct values are not suitable for this project. Also see my notes on the pic:

[NefroniK]

Thank you! I think that I can use C5 (1n metallized). Am I right?

[audioguru]

I think that I can use C5 (1n metallized). Am I right?

Its tolerance isn't marked and is probably 20%. The project's brightness will be affected if its value is near the end of its wide range. I always use 5% capacitors that cost only a couple of cents more, then I know their exact value.

[NickDay85]

I've been looking at this project with great interest. 

Audioguru, I was wondering if I could have permission to use this for my College Electronics project?

Thanks

-Nick

[audioguru]

Hi Nick,
Welcome to our forum.
You can use any project on this website for anything you want.

I also have a 6V Ultra-bright Chaser project here that has a few extra features:
1) It uses extra-ultra-bright blue, green or white LEDs that need its 6V battery. Their brightness's are absolutely blinding.
2) The LEDs go around and around a few times then pause. Then they start chasing again and pause again etc. It looks more interesting and the pause saves battery power.
3) It still has a very low current so its battery lasts a long time. My 1st one still has its original battery more than 1 year after it was made.
4) It also has a chasing speed control and brightness control.
http://www.electronics-lab.com/projects/games/004/index.html

I converted most of my 3V LED Chasers to the new circuit and kept the original low-voltage LEDs and 3V battery. I kept a single original 3V Chaser and it chases around and around and around and around and around for more than 1 year on its original battery.


When you finish that project then you can make my Sound Level Indicator project:
http://www.electronics-lab.com/projects/motor_light/009/index.html

When you finish that project you can make my Plants Watering Watcher-2 project:
http://www.electronics-lab.com/projects/science/018/index.html

When you .... 

[newman100]

Does anyone know where to get the parts listed at

http://www.electronics-lab.com/projects/games/003/index.html

for the 3V led chaser, in Australia, please reply ASAP, extremely urgent, thakyou in advance.

[audioguru]

Hi Newman,
Welcome to our forum.
Try www.farnell.com and click on your down-under flag. They carry a lot more electronic parts than Dick Smith.