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DELETED (Inactive)
33 Posts |
 Posted - Jun 11 2003 : 1:23:14 PM
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I need a relay or Similar Circuit for my door car that activate when I am out of the car an close the door.....This system can has a timer to keep is working for some minutes.
This circuit has to let me open my door and when I close the door it activate a relay or circuit.
Maybe this sound strange but this is what I need in order to complete my project.
What I am trying to acomplish is the following.
My car is a VW Turbo and has a factory Keyless entry. I am instaling a Turbo Timer but when the engine is running it not allow to close the door locks with the Keyless remote because the engine is running.
I alredy find out what do I have to interface in order that the Keyless system work with the engine running but the only thing I need to finish this project and work ok is the circuit I ask at the begguining.
If the relay activate as soon as I open the door the courtesy light turn of inmediately......Thats why I need it activate when I close the door.
THX,
Isaac
Edited by - Turbo Boss on Jun 11 2003 1:29:47 PM |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 11 2003 : 2:07:00 PM
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Have you checked any of the VW forums? They may have already found a simple solution to this...
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DELETED (Inactive)
33 Posts |
Posted - Jun 11 2003 : 8:34:39 PM
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Hey Aaron, yes, I am following many VW forums and also the VWVortex forum about this. The problem is that on 2002 / 03 VW cars the thing is completely diferent because the newer VW computer use can data bus wires.
None of the Vortex people have find the way to do it work with the Remote control. One of the guy is installing like 7 or 8 relays were he can use Logig Gates and Diodes...................I talk to this guy and he only know a basic electronic. There is other guy that is selling a gatget but this only activate the alarm and lock the door when the Turbo Tirmer turn of the engine. The problem with this set up is that the car will be unlocked when is idleing unatended.
Ofcourse you can lock the door manually with the key to avoid this problem......But I want it to work with the Keyless remote :-)
I has already find the way to do it and is working perfectly, but I need a circuit as I described in my firts post so the system beguin to work as soon as I close my door..............If the relay activate when I open my door, the courtesy light turn of inmediately......Thats why I need it activate when I close the door............courtesy light will turn of as factory.
Can you help me,
THX,
Isaac
Edited by - Turbo Boss on Jun 11 2003 8:36:13 PM |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 12 2003 : 09:21:00 AM
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So what exactly do you need to have happen? If you make a list of the steps, it will be easier to think of a circuit....
I guess that's the nice thing of having an older car...turbo timer installation in my RX-7 took exactly 10 minutes. 
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DELETED (Inactive)
33 Posts |
Posted - Jun 12 2003 : 09:38:04 AM
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Yeah, I know what you mean. I use to have a Mitsubishi Eclipse Turbo and was a piece of cake too intalling the Turbo Timer.
I will post later the list of steps.................
THX,
Isaac
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DELETED (Inactive)
33 Posts |
Posted - Jun 12 2003 : 12:15:30 PM
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Ok, I will try to explain what I am trying to accomplish.
The VW car comes with a factory Keyless remote for lock and unlock of the doors
At the present time there is a Greedy Turbo Timer installed in the car the way you know.
When the engine is idling with the TT, and the key is out of the ignition switch, I can not lock the doors with the Keyless Remote because the car computer knows the engine is still running because the computer is sending a signal to the door lock receiver module to not allow to work.
Checking the door lock receiver module at the car, I was looking for wires that was receiving IGN signal to this module telling that the engine is on but there was not indication of this. Then I find out that this module is connected to the main car computer via 2 wires that are can data bus.
I cut one of the can bus wires and WOWWWW, the remote begging to work and doors lock and unlock via remote control.
So I design a small circuit with a AND and NOT gate that as soon as I take out the key from the ignition it allow to send a signal to a 5 pin relay so this relay open the NC contacs and interrupt this can bus wire..........and when the engine shut of it close the contacs.....
This circuit only power the coil relay when is working. Also This circuit only work when the TT is sending ignition to keep the engine running.
At this point everything is working perfecto.
Here is my problemo.
This car has ignition controlled door locks....this mean when you start the engine it lock all the door by itself and when you turn of the engine and take out the key it unlock all the doors and turn on the courtesy light by itself.
So, I find out that when this circuit is WORKING, when I take out the key from the ignition, the door locks does not pop up and the courtesy light does not turn on, neither when I open the door to get out of the car......When the circuit is NOT working everything is OK
So its look like the can bus wire I am interrupting is also in charge of these things................So that’s why I need a Circuit that may work with my Circuit to activate the relay when I close the door. This circuit has to allow me to open the door to get out and then trigger the circuit when I close the door.
Aaron, what you think??? Can you help me to design something?
THX,
Isaac
Edited by - Turbo Boss on Jun 12 2003 12:26:23 PM |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 13 2003 : 09:34:24 AM
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It sounds like you just need a relay on a timer? If so, then look at http://www.aaroncake.net/circuits/relaytim.htm . Can be triggered with a small reed-relay.
If you need something more complicated (triggering multiple relays on timers), then look into microcontrollers. I recommend the BASIC Stamp. Programmed in BASIC, and pretty flexable. http://www.parallax.com
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DELETED (Inactive)
33 Posts |
Posted - Jun 13 2003 : 4:43:25 PM
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Aaron, I do electronics as a hobby and I dont have an idea how to work with basic Stamps..............................
I know that a timer CANT solve the problem because it will activate as soon as I open the door......And I need it to wait until I close it. Maybe a circuit that as soon as I open the door it wait like 8 seg then activate the relay for 5 minutes.
Can you help me with this delay activation relay circuit.
I have try to look for one but I havent find one
THX,
Isaac
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YS
Nobel Prize Winner
USA
1132 Posts |
Posted - Jun 13 2003 : 10:04:22 PM
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you probably need just think of control logic BEFORE the timer. If you want it to start after the door is closed, then do just that. Check the function of the door sensor (button, probably) and see if you need to modify 555 circuit. As Aarom said, you just need to understand what exactly you want to do - it sounds weird, but this is usually the hardest part of digital design. After the task is formalized, it is easy to solve - especially when it comes to simple digital logic, which is your case.
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DELETED (Inactive)
33 Posts |
Posted - Jun 14 2003 : 01:03:15 AM
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I have been trying to desing/think something with several Logic Gates and I can find the way :-(
Yes, as I open the door the pin/switch send ground to turn the courtesy light.
Thats why I need a delay circuit that activate a relay.
Thats why I post here to see if somebody can help me to design it or it can give me some web pages were I can find a diagram.
I live in Panama Central America, and here there is no Radio Shack were I can buy a 555 project book :-(
THX,
Isaac
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YS
Nobel Prize Winner
USA
1132 Posts |
Posted - Jun 14 2003 : 4:41:54 PM
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All right. You close the door and voltage goes up, right? then use an inverter - either a logic gate or just a transistor with two resistors - and output voltage will go down. then connect inverted signal to the 555's input via capacitor (0.1uF should work) to create a differentiator. In that configuration, timer will start at the moment you close the door and will not react when you open it.
As for the Radio shack, I lived in Russia with absolutely no Radio Shacks for 35 years - and still I could find info on 555. Radio shack is not the only source (thank goodness!). Try local library or a bookstore.. try National website www.national.com - they have all app notes on 555 available. All these project books are actually derived from National application notes.
And, please do read what we write: try to write down what you want first. The design itself is secondary. When you ask questions, such notes will definitely help us to help you. Again, you say that you need a delay circuit to activate a relay - but are you sure? I am not. If you would ask something like: "when I open the door and voltage goes up, the system should not react. When I close the door and voltage goes down to 0, the timer should start counting and activate relay for 5 minutes, then turn off" - I would understand it better. And, more important, you will understand it better. I am still not sure I know what do you want to do.
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DELETED (Inactive)
33 Posts |
Posted - Jun 14 2003 : 5:00:44 PM
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Hey YS, thank you for the 555 advise. I will try it ASAP.
I am still a beguiner and do electronics as a hobby and thats why I not use the corrects words to explain the project I am doing.
Thank you again for your time and help.
Cheers,
Isaac
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jun 14 2003 : 6:00:19 PM
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I still think the Stamp is the best way to go. VERY easy to program, and gives all the flexability needed to build a circuit with a very low parts count. Probably jus the Stamp and a few relays. Different then straight logic gates and timers as you can trigger outputs on at any "time" you want, based on input conditions...
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DELETED (Inactive)
1 Posts |
Posted - Aug 14 2003 : 1:25:08 PM
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If you can give up your factory remotes, I believe I have a remote start alarm system that will solve your problems. Remote start / keyless entry / lock /unlock / turbo timer built in / ignition auto lock programmable / 4 button remotes / built in relays / single - double lock pulse programmable / long range antenna.
cost $ 150 contact 806-767-0715 Jeff
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Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Aug 19 2003 : 12:39:22 PM
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quote:
I still think the Stamp is the best way to go. VERY easy to program, and gives all the flexability needed to build a circuit with a very low parts count. Probably jus the Stamp and a few relays. Different then straight logic gates and timers as you can trigger outputs on at any "time" you want, based on input conditions...
Actually, I'm pretty sure the PIC microprocessor is available in versions with a CAN bus interface built right in. If you could splice it into the bus, you could use it to monitor what the car's controler is receiving from the bus. You could then program the PIC to send control symbols out on the bus to fool the main controller into thinking the engine was off while the turbo timer was running.
Probably fairly complicated to do though.
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Relay or Similar Circuit for Door in Car
