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

Big Dog wrote:

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No prob, borrow away!  It was your idea anyway, with a twist.  I may end up using it to honk my horn when locking my doors on my Caddy's factory RKE, which is oddly set up with no audible feedback.   I'll double pulse it to honk the horn, and when a single pulse is issued, it'll stay silent for the times I want it to be silent and don't need the feedback.

I use Orcad for all the drawings; very easy to draw with it-

Why do you need a resistor across the cap though? The coil of the relay will drain down the cap in short order, so I didn't figure it'd need any extra resistance.

So anyone have try this design? Ist really can be done? Double Pulse to Single Pulse?

Tq

My plan..double to single pulse..its for channel...since my alarm dont have any channel...

I found this module...450R

BIG DOG/Anyone :- Do you think 450R can be activate using output from unlock wire?

Once press Unlock Button - Activate Channel 1(Unlock the car )

Twice press Unlock Button-Activate Channel 2

3 times press Unlock Button-Activate Channel 3

4 times press Unlock button-Activate Channel 4

and so on....

Anyone think its possible to be done? Coz my alarm dont have any auxilary output? Really need advise...Coz plan to put autostart,window module,horn..

Thanks

Hey megatfauzi76, you're on to something good. However, you need the 450T not the 450R.

The 450T is controlled by a single wire whereas the 450R has an antenna and requires a DEI remote with multi-channels.

For the 450T to work, test your unlock output of your security system first to see if in fact it sends a pulse everytime you press the unlock consecutively because not all systems do.

I usually test this by temporarily connecting a relay to the output. If I can get it to activate consecutively within two seconds of each button press then the output is OK for the 450T.

I need some quick help before i take a sledge hammer to my car,

my situation

Honda car

aftermarket alarm

spare actuator for drivers side door

now then, the car, its central locking control unit has

Black = ground (-),  BLACK/ pink = lock (-), BLACK/ orange = unlock (-), Pink = slave lock (+), Orange = slave unlock (+) & Purple = +12v

connecting purple & pink , then orange & black doors lock

connecting purple & orange, Then pink & black doors unlock

now as for the alarm, that has numerous wires but the one i need is labeled  Orange = pulsed 500ma ground output

for connecting to central locking, the question is how the hell to connect the Orange = pulsed 500ma ground output  when there is clearly 2 seperate wires to recieve lock/unlock command.

You need two circuits on you security system. One lock output, one unlock output.

If you don't have door lock/unlock outputs on your module but only a ground out when armed output then you can use a DEI 452T doorlock module. It will send a lock pulse when you arm and an unlock pulse when you disarm using just the ground when armed output of the alarm module.

You'll connect the outputs of the 452T to the BLACK/ Orange and BLACK/ Pink wires at the unlock switch of your car.

Sledge hammer is optional.