Hi All,
New here and looking for a bit of advice/help. I'm trying to design a simple circuit that uses a momentary switch to toggle between open and closed. the wall I have hit is I want the circuit to reset to closed when the power is dropped. 12vdc, 3A max, but probably a lot less A.
The back story is I just bought a car with no button to turn off the traction control. My last car had a button to turn it off and I used it a fair bit in slushy conditions to spin the tires. If the traction control was on I couldn't get up to speed to merge. I want to add this button to my current car. This has been done before to the type of car I own, its simply a matter of adding a switch into a single wire, BUT all of the people who have done it used a simple toggle switch. I want to avoid this so it doesn't get left turned off accidentally. I want it to reset to an open state when the ignition is turned off.
1. Ov in (ignition off) 0V out
2. 12V in (ignition on) 0V out
3. 12v in (Ignition on), press momentary, 12V out to NC relay, which changes to open disabling traction control
4. 12v in (Ignition on), press momentary again, 12V out to NC relay, which changes to closed enabling traction control
5. Repeat 3-4 to suit road conditions
6. Ov in (ignition off) 0V out regardless of the last state
Thanks,
Scott
New here and looking for a bit of advice/help. I'm trying to design a simple circuit that uses a momentary switch to toggle between open and closed. the wall I have hit is I want the circuit to reset to closed when the power is dropped. 12vdc, 3A max, but probably a lot less A.
The back story is I just bought a car with no button to turn off the traction control. My last car had a button to turn it off and I used it a fair bit in slushy conditions to spin the tires. If the traction control was on I couldn't get up to speed to merge. I want to add this button to my current car. This has been done before to the type of car I own, its simply a matter of adding a switch into a single wire, BUT all of the people who have done it used a simple toggle switch. I want to avoid this so it doesn't get left turned off accidentally. I want it to reset to an open state when the ignition is turned off.
1. Ov in (ignition off) 0V out
2. 12V in (ignition on) 0V out
3. 12v in (Ignition on), press momentary, 12V out to NC relay, which changes to open disabling traction control
4. 12v in (Ignition on), press momentary again, 12V out to NC relay, which changes to closed enabling traction control
5. Repeat 3-4 to suit road conditions
6. Ov in (ignition off) 0V out regardless of the last state
Thanks,
Scott