double pulse to single pulse how to do it

Hai..

How to do...double pulse than i get one pulsed? Means press the remote button twice..than the door unlock?

CAn any one help me? Tq

Here's a simple setup I've used many times using two relays.

The first pulse from the security system will activate the relay A on the left which in return will charge the cap and energise the second relay B.

When you send the second pulse within a couple of seconds, the signal will now pass through pin 30 of relay B to exit pin 87 of relay B .

Thanks Big Dog

Can I know more specific about the capasitor? Regarding Voltage and capacity? Coz im new about creating new invention...

Anyway, can I know how long it take btwn lag time in second btwn 1st and 2nd pulse..to generate 1 pulse?

Looks like the capacitor across the coil is an RC network.

When the capacitor discharges thru the coil, it causes the relay to drop out.

Nice design.

Why didn't I think of that?

The capacitor is a 4700 mfd, 16vdc, polarized.

You will have less than three seconds between the first and second pulse.

Thanks...

Can I ask...how long this capacitor life time? Im scared need to changed the capacitor every 2-3months..

Thank you..

Big Dog...Can you Comments my design based on my drawing I paste here..

Now Im using 529T to roll up my window when I lock my car.

So I plan to use 452T ( door lock pulse ) to roll down my window....I just want to roll down a bit..not full roll down..may be about 2-3 inches...

I plan..double pulse to unlock will roll down my window ( using BIG DOG diagram )....Single pulse will only unlock my lock....Do u think its possible? Or i better used 528T....If i usr 529T it will roll down full my window....

Thank You

Instead, use a 530T. This will do two windows up and down with a possibility of venting.

Connect H2/4 Orange with H2/5 Gray of the 530T then connect them to lock wire from your aftermarket security system. This will roll the two windows all the way up with a pulse and the 530T module will release the instant it senses roll up resistance making it secure and easier on the motors.

A momentary pulse on the H2/3 RED / White will vent the windows about an inch but a pulse longer than 3 seconds will roll them down. Connect this to an auxiliary channel output which has a signal length which matches how long you press the button.

The 530T also has "one-touch" feature to roll windows all the way up or down with a single pulse from the inside switch.

Keep the 529T and your relays for another project 

Thanks Big Dog..

My problem...My alarm system dont have any channel..That y i plan to use double to single pulse from ur idea..to roll down the window half..when i double pulsed my unlcok button...

To changed other alarm..i have to spend more...

Do you think my plan as i post before can be done?

Thanks Big Dog