Created a simple car alarm once.
http://jtjohnston.net/relay.PNG
Put a jumper from pin 1 to the normally open pin (pin 5).
Pin 3 has continuous juice. Juice pin 1 once and the relay will lock on until the ground or juice on pin 3 is broken.
Sounds like it might help?
I suppose you've seen these?
http://store.qkits.com/category.cfm/CAR
They seem to have a decent digital tachometer.
Any one know where a newb might find an oil pressure gauge, water temperature, voltage, battery charge?
I have an old Chevelle, and although it is Gino a bit I wouldn't mind...
I'm a 41-year old newbie. Haven't played with this stuff since I was 20. I still know a few principles. So be gentle. Here goes.
I want to create an RC circuit to create yee old alternating, blinking relay.
Instead of powering the relay through the coil, (pin 1) I'm juicing it through pin 4 by...