Hey there Swagatam.
I just wanted to say that what you do here in you blog is wonderful. I just came across them in Google looking for a chasing light circuit. Love it and will be using it. I do have a question about this timer circuit though. Could I have this hooked up to my headlight switch and when I turn off the switch it starts the count? I would like to add this to a breathing light circuit so when I turn off my lights, the head and tail lights fade in and out for a set amount of time. Would this be the circuit I need for the timing aspect? Thank you in advance, and there is no rush.
Parts list for the above car head lamp fader, "breathing effect" generator circuit
R1, R3, R4 = 100K
R2, R9,R5 = 10K
R6, R7 = 470 OHMS
R8 = 50 OHMS, 2 WATT (ARBITRARY)
C1, C4 = 0.1uF
C3 = 100uF/25V