I am new to this forrum, I'm trying to design a circuit that will start the heated seats on a car. My idea is to use a timer circuit. I have been reading about 555 circuits, but I have the following questions.
It seems that the trigger for the 555 is a negative connection, can the 555 be triggered by application of positive voltage? If it can, my idea is to have the car's starter motor circuit trigger the timer, have it wait for five seconds (enough time for the car to start) then have the output of the timer activate a relay for .5 seconds. (I would use the relay to contact the heated seats switch)
Can someone help me with a suggestion?
Is there a better way than this idea?
Thanks in advance for any help.