Three Pulses converted to one pulse

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neener

Member - Posts: 27

Joined: October 22, 2004

Posted: October 24, 2004 at 10:01 PM / IP Logged

I would only have two triggers from the door locks (lock and unlock). I am using the factory keyless entry to trigger the relays.

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: October 24, 2004 at 10:23 PM / IP Logged

12v Negitive Pulse from each?

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

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neener

Member - Posts: 27

Joined: October 22, 2004

Posted: October 25, 2004 at 8:38 AM / IP Logged

Yes a negative pulse from each.

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: October 25, 2004 at 6:17 PM / IP Logged

I am working on the Idea of using 3 relays. Latch the first Relay with the first pulse . The second Pulse will go thru the first relay and latch the second relay This will allow the third pulse to go thru the first and second relay and unlatch the whole mess. If the up Button is Pushed Multipul times nothing will happen, if the down is pushed Multiple Times Nothing will happen if up and down are pushed and down is pushed again nothing happens, if up then down then up are pushed it releases the third relay and sends a pulse out to the box.I am still working on it.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: October 26, 2004 at 12:37 AM / IP Logged

Here is what I came up with.

It has not been tested! Three Pulses converted to one pulse - Page 2 -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

neener

Member - Posts: 27

Joined: October 22, 2004

Posted: October 26, 2004 at 12:36 PM / IP Logged

OK, I will try and wire this up and test it. I am assuming that the two relays on the left are DPDT, and order of contacts from top to bottom are NO-COM-NC. I have never worked with a DPDT relay before so please correct me if I am wrong.

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: October 26, 2004 at 4:55 PM / IP Logged

If you don't have DPDT you can use 2 Cube Relays in Tandum Just hook the coils together.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: October 26, 2004 at 7:33 PM / IP Logged

Here is the same circuit using Cube Relays.

Three Pulses converted to one pulse - Page 2 -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

neener

Member - Posts: 27

Joined: October 22, 2004

Posted: October 27, 2004 at 9:48 AM / IP Logged

I will pick up some relays this weekend and give it a try.

John, Thanks for your help on this one.

neener

Member - Posts: 27

Joined: October 22, 2004

Posted: October 28, 2004 at 2:14 PM / IP Logged

One more question. Without using a timer realy to control the 12 volt constant pressing Lock then half hour later Unlock and Lock it will trigger the remote start. The latched output is not timed so any amount of time between the triggers could trigger the remote start correct?

So is it a good idea to use a timed relay triggererd by the Lock output to supply power to the relays for a set amount of time. This would ensure that the Lock->Unlock->Lock sequence would only work with a specified amount of time.

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