Hi Guys,
I am embarking on a new project to design a circuit for an automatic vehicle signal actuator.
The goal of the project is this:
The problem.
I have a car that has indicators operating on a standard 12v on-off-on toggle switch. As you can imagine this switch gets left on occasionally. Both misleading and potentially dangerous.
The solution
Replace the toggle switch with a 2 way momentary switch and create a circuit that supplies 12v to the correct circuit for 5 seconds. In addition, the timer is continually reset when 12v feed from the brake circuit is applied. As soon as the brake this feed stops, the 5 seconds starts again.
Effectively, this allows a a lane changing signal as well as a solution for waiting at junctions or to cross a stream of traffic.
I would imagine a 555 timer would be the way to start with this (or a 556 dual timer).
From what I can tell I need to use 'Monostable' mode.
Where do I go from here!?
Is the 555 (556) the right choice?
Is it a robust solution?
I am embarking on a new project to design a circuit for an automatic vehicle signal actuator.
The goal of the project is this:
The problem.
I have a car that has indicators operating on a standard 12v on-off-on toggle switch. As you can imagine this switch gets left on occasionally. Both misleading and potentially dangerous.
The solution
Replace the toggle switch with a 2 way momentary switch and create a circuit that supplies 12v to the correct circuit for 5 seconds. In addition, the timer is continually reset when 12v feed from the brake circuit is applied. As soon as the brake this feed stops, the 5 seconds starts again.
Effectively, this allows a a lane changing signal as well as a solution for waiting at junctions or to cross a stream of traffic.
I would imagine a 555 timer would be the way to start with this (or a 556 dual timer).
From what I can tell I need to use 'Monostable' mode.
Where do I go from here!?
Is the 555 (556) the right choice?
Is it a robust solution?
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