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single input to multiple output


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vader7071 
Member - Posts: 11
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Joined: February 01, 2008
Location: Alabama, United States
Posted: October 21, 2010 at 4:15 PM / IP Logged  
I understand how to have a single momentary trigger signal to multiple outputs depending on status (i.e. stacking relays so if car is off, output 1 is triggered, if car is on, output 2 is triggered, etc.)
What I am looking for is a single pulse input trigger going to multiple outputs depending on pulse count. So, if input pulses 1 time, output 1 is triggered. If input is pulsed 2 times, output 2 is triggered.
Concept: door poppers, and I have a car alarm/remote system that has only 2 outputs (for doors), and I need to open 4 doors. I would like to press button 1 one time and open front driver door, or press button 1 two times and open the rear driver side door.
Thank you in advance for your help.
There is no devil, only God when He is drinking.
oldspark 
Gold - Posts: 4,913
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Joined: November 03, 2008
Location: Australia
Posted: October 21, 2010 at 5:12 PM / IP Logged  
Perfect application for a CD4017 1-of-10 decade counter.
But that's a ~$1.50 14-pin integrated circuit that would need a transistor of FET buffet to drive relays or outputs....
vader7071 
Member - Posts: 11
Member spacespace
Joined: February 01, 2008
Location: Alabama, United States
Posted: October 25, 2010 at 1:56 PM / IP Logged  
Oh, circutry like that does not bother me. I took a Varad LED controller and before I made my little add-on, it would only control 4 leds. Now it controls as many as I want in 4 zones.
I will look up the CD4017. Thanks!
There is no devil, only God when He is drinking.
vader7071 
Member - Posts: 11
Member spacespace
Joined: February 01, 2008
Location: Alabama, United States
Posted: October 25, 2010 at 2:03 PM / IP Logged  
This chip actually fixes another circuit I have been wanting to build. This will work perfectly for my LED clock I am building.
However, for the doors, not sure it will work. I need a delay/counter. basically, 1 pulse within 3 seconds = output 1, 2 pulses within 3 seconds = output 2. From what I have been looking at, if I pulse 2 times, I will trigger front door, then back door. Not exactly what I am looking for. But thanks for the help!!!
There is no devil, only God when He is drinking.
KPierson 
Platinum - Posts: 3,527
Platinum spaceThis member consistently provides reliable informationspace
Joined: April 14, 2005
Location: Ohio, United States
Posted: October 25, 2010 at 3:36 PM / IP Logged  

One pulse in three seconds opens the drivers door?  That will drive you crazy waiting 3 seconds for the door to open.

If it were my car I would get a keyless or alarm system that has more outputs.  Pulse counting is not the best way to open doors on a car.

Kevin Pierson
vader7071 
Member - Posts: 11
Member spacespace
Joined: February 01, 2008
Location: Alabama, United States
Posted: October 25, 2010 at 3:39 PM / IP Logged  
Well, I was using 3 seconds as an example...lol But that is the general idea.
As for another controller, I have one that has 8 outputs, but the distance is CRAP! About 4-5 feet TOPS (and that is on a good day). The system I am using now gives me about 150 feet. Just trying to refrain from spending another few hundred $$$ when I have other places that needs to go.
There is no devil, only God when He is drinking.
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: October 25, 2010 at 5:23 PM / IP Logged  
The 4017 can do variable delays by diode-ORing (connecting) successive outputs together (with diodes).
If the 9 outputs ain't enough, cascade more 4017s.
[Reset to zero after n pulses by connecting the nth output to reset (where n is output 0,1,2...8,9 - not 1,2,3...9,10 as some label the outputs).]

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