[How to make 10 LED countdown?]

Hello,

I have tried to make of countdown with many 1N4148 and CD4017.
But first led has weak licht and at last led has much light.

See animated gifs.
So I will make to get this.


Like as this but there is more. (above the voicebox are 4 leds)
And cruise leds controls will last on.

[10A 1.2 to 20V power supply]

I have thinking about this.

I will made from 10A into 5A.
10A is too much for my projects.

[Knight Rider with Halogen Bulb]

LOL.........  ;D

[Knight Rider with Halogen Bulb]

Nothing  ;D

I did not use when I drive.

[Knight Rider with Halogen Bulb]

I have already break lights up (all-on) then knight rider effect.

My Power Supply are to weak to get break light up.
So, you see this effect when I try get break light up then knight rider effect.

http://www.captain-nguyen.nl/knightrider/videos/NewScanner20Watt.wmv

[Knight Rider with Halogen Bulb]

Schematic works  ;D 8)

[10A 1.2 to 20V power supply]

I understand,

Thank you.

[10A 1.2 to 20V power supply]

MJ15004 use 250W.  :-X
Have not looking to datasheet.
Datasheet MJ15004

Is this schematic right now?

[10A 1.2 to 20V power supply]

I have found this schematic from internet.
But I have adapt from 2A to 10A power supply.

Could this work?

[Knight Rider with Halogen Bulb]

Your new circuit is correct. Add a 1k resistor to quickly turn off the TIP42.

Long time ago yes.

But with 1K resistor will it quicly turn of?, and without?
Slow to off?

[Simple O2 meter with LM3915]

Hmmm with LDR?

Why not from lights?

[Simple O2 meter with LM3915]

He say:

With LM3914 work much better than LM3915.

I think you read the level better with LM3914 than LM3915.

[Knight Rider with Halogen Bulb]

Hee, hee.

[Simple O2 meter with LM3915]

I have got only 10 LED air/fuel gauge version, with LM7805

As you would like get circuit diagram here is it.

[Knight Rider with Halogen Bulb]

I use with PIC16F628.

But I must learn how write pwm effect in Jal.

[Knight Rider with Halogen Bulb]

Thanks for info.

And it work now with tip32.
I did not use always.
Only for show at meeting or friends.

[Knight Rider with Halogen Bulb]

Okay, I will use 1 W resistor.

[Knight Rider with Halogen Bulb]

Thank you,

And resistor of 27 ohm.
Is it 1/4 watt or 1/2 watt?

[Knight Rider with Halogen Bulb]

Like as this?

Or must I replace from Tip41 to Tip32?

[Knight Rider with Halogen Bulb]

oh,

I have wrong.
It's Tip42, not Tip32. ::)

And it's for car.
With relay hear you all the time when it on. :o
It would not like it.

And this schematic from http://ratliff7.tripod.com/counsel.htm would not work best.


I have hear from other forum.
They say it does not work best, It would very heat.

So, how dit they do that?
Like as Knight-f2k4 scanner.

And could this work at first schematic?
http://www.electronics-lab.com/forum/index.php?topic=2373.0

[Knight Rider with Halogen Bulb]

Hi,

I'm new here, and come from holland.

I have one problem.
I have made my Knight Rider Scanner with PIC16F628.

Only LED will work, but no halogenbulb.

I have tried with this schematic.