arduino sends pulse to relay enabling ignition.
Lefty, I do have a multimeter. I went and bought one the otherday. I understand your concern about the ignition being involved. See I thought the car runs off the alternator after it is started.I don't think that is correct. The ignition circuit is it's own circuit, how else would you be able to stop the engine running by just turning the keyswitch off? That would mean the ignition has nothing to do with driving, while in the process. But I could be wrong and I guess to be on the safe side I will go with hooking the relay up to the selanoid. Well that is possible but be sure you have a relay that has contact current ratings able to handle what the starting solenoid requires. I guess the relay being latched or non latched wouldn't make a difference with the proper programming.Correct. And latch relays are more complex in that there is additional wiring to allow both setting and resetting for it.Lefty
Well that is possible but be sure you have a relay that has contact current ratings able to handle what the starting solenoid requires.
So would the SPDT 12V relay at 120VAC/24VDC rated 10A work for my project?
So what contact rating is suitable for the starting selanoid, 30?I have no idea what a suitable rating for your truck would be and don't know where to find such information. Could I even find a spdt 12V relay that has a contact rating of 30?30amps, maybe, higher then 30, not sure. Controlling the starter current path is not method I would attempt. I really don't have a solution for you other then to say using a arduino to control the starting or the ignition circuits is a pretty risky application. However cars and truck do come with such keyless entry systems and security systems and there my be 3rd party options that can be fitted to your truck. I'm just not sure it's a good arduino beginners project to take on.Lefty
And what line I have to hook up the diode to.
Now I need to figure out how to make the arduino send 12 volts.