Hello all, newbie here looking for some help on a little project.
My car has a total closure circuit that closes all the windows when you deadlock using the key remote. I also have folding mirrors but the two are not combined. The mirrors only fold on a switch on the door. I'm looking to make a circuit that will fold the mirrors in when the deadlocking is activated. As the lock signal is momentary, the circuit must have power for 3 seconds after the signal. They must also unfold when the car is unlocked.
At first I thought about using relays, then it was suggested to me to use transistors - they are smaller and cheaper. I've come up with the following circuit...
My apologies for the screenshot but that is the only way I could save it to post on here. Hopefully you can see how it would work. The two changeover switches are the closest thing that the software I'm using has to what the car uses but hopefully they give the general idea.
My questions are as follows...
1. Will this circuit work?
2. What type of diode will D1 and D2 need to be?
3. What values will R1, R2, C1 and C2 require to keep the circuit powered for 3 seconds after the initial lock signal.
4. I need a way of isolating the circuit when the ignition is on so that mirrors cannot be folded by accidental locking. I think this would need to be between my circuit and the original locking circuit. The circuit also must not interfere with the original functions of the mirror switch and central locking system. How do I do this?
5. Will the transistors affect the voltage at the mirror motor? It needs to be 12v
I do hope I've explained that well enough, my apologies for waffling. Any help is very much appreciated.
Thanks
My car has a total closure circuit that closes all the windows when you deadlock using the key remote. I also have folding mirrors but the two are not combined. The mirrors only fold on a switch on the door. I'm looking to make a circuit that will fold the mirrors in when the deadlocking is activated. As the lock signal is momentary, the circuit must have power for 3 seconds after the signal. They must also unfold when the car is unlocked.
At first I thought about using relays, then it was suggested to me to use transistors - they are smaller and cheaper. I've come up with the following circuit...
My apologies for the screenshot but that is the only way I could save it to post on here. Hopefully you can see how it would work. The two changeover switches are the closest thing that the software I'm using has to what the car uses but hopefully they give the general idea.
My questions are as follows...
1. Will this circuit work?
2. What type of diode will D1 and D2 need to be?
3. What values will R1, R2, C1 and C2 require to keep the circuit powered for 3 seconds after the initial lock signal.
4. I need a way of isolating the circuit when the ignition is on so that mirrors cannot be folded by accidental locking. I think this would need to be between my circuit and the original locking circuit. The circuit also must not interfere with the original functions of the mirror switch and central locking system. How do I do this?
5. Will the transistors affect the voltage at the mirror motor? It needs to be 12v
I do hope I've explained that well enough, my apologies for waffling. Any help is very much appreciated.
Thanks