LED sequencer-need help

[esaunders]

I am needing an LED sequencer that has the ability of turning off (by switch) any of the lights and behaving just like the one or ones turnd off where never there.  Can anyone steer me in the right direction?

 

[Alun]

I am needing an LED sequencer that has the ability of turning off (by switch) any of the lights

Just include a switch in series with the LED.

and behaving just like the one or ones turnd off where never there.  Can anyone steer me in the right direction?

What're you talking about? This doesn't make any sense to me. ???

You can make a simple LED sequencer with a 4017 CMOS chip.

 

[esaunders]

Say for example that the #2 light is shut off.  I need the chip to automatically go to #3.  Further more if #2 and #3 are shut off then I need it to automatically turn on 4.

 

[Alun]

Do you want each LED to turn on after the other?

 

[ECET0purdue]

use a pic 16f84 chip ....and program it.

also confused me with the last part... ???

 

[esaunders]

Let me be a bit more detailed.  I don't always explain everything real clear.
I need 8 leds that light up in sequence.  I want to run the switching from one light to the next with a push button instead of the common 555 timer, but I got that part conquered. 
Where I am having trouble is say for example that light 4 is turned on, now what I might need to do is to flip a switch at this moment that will "block" light 2 from turning on.  If I press the push button light 4 will go off and light 5 will come on just like normal no big deal, but at the end of the sequence (light 8) it needs to go back to light #1, no problem there yet.  Now Light 1 is on, remember that light 2 is "blocked" or turned off, with the next press of the button I need it to turn light 3 on.  In other words, skip over the lights that I have turned off, like they were never in the sequence to begin with.
Maybe this is a little clearer.
And thanks for all trying to help.

 

[Ldanielrosa1]

I'm afraid that for an intelligent sequencer you'll have to use a microcontroller.  Since you only want one LED lit at a time and the kill switches only need to be read prior to their renk in the sequence, you can probably do it with 9 I/O pins.  Is this for a game-show device?

 

[MP1]

A 4017 doesn't care if you turn one of the LEDs off. It will keep on sequencing. If you need to fill in the gap for a missed sequence, you can make this a little smarter with digital gates.

MP

 

[esaunders]

can you tell me more about digital gates, I have no idea what they even are.

 

[Alun]

Try reading the following articles:
http://electronics.howstuffworks.com/digital-electronics.htm
http://www.phys.ualberta.ca/~gingrich/phys395/notes/node122.html
http://www.kpsec.freeuk.com/gates.htm
http://whatis.techtarget.com/definition/0,,sid9_gci213512,00.html

 

[esaunders]

Okay someone tell me if they think this will work.  Let's say for example that I want the #2 light switched off, this would mean I need the chip to go to light #3.  TO do this what if I used a dpdt switch to not just turn #2 off but to reroute it so that it will trigger some kind of pulser.  the pulser would then be connected to the input switch of the chip via n.c. relay.  this would then open up the input to the chip and then close it causing the chip to move to #3. 
Let me try to explain it again I push the button to switch to #2.  The signal goes out of #2 output and to a pulser, this pulser would then trigger the realy to open up and after the pulser is done release the realy thus closing the circuit causing the chip to move to the next (#3) light.  The relay actually does the same thing as the push button I have controlling the chip.

 

[MP1]

I think you should draw a picture.

MP

 

[Anotherforummember]

I am needing an LED sequencer that has the ability of turning off (by switch) any of the lights and behaving just like the one or ones turnd off where never there.View attachment 37470

 

[MP1]

...let me guess....(having seen your ad in the buy/sell)..and you will only charge him xx for the code?

MP

 

[Anotherforummember]

...let me guess....(non helpfull typing)
MP

...Are you helping with the addition of another off topic comment directed towards me ????