So I’ve been working on some controller projects for my 71 Dodge Dart. (2 door hard top. 360cid) my last project was an electric fan controller and it works pretty well thanks to all of you who helped.
I’m thinking about a remote start for my next project. Getting the starter to activate is the easy part, it’s know when to disengage that might be the tricky part. I’m debating on using a voltage divider to read the voltage drop from the battery and when the battery stabilizes and is above 11.3ish volts then deactivate the starter relay...or.... use engine speed to disengage starter relay.
Either of those 2 scenario's could work well. I would likely try the rpm method myself. testing and tuning will be necessary.
If the car is still carburated you may need some way to pump the gas/ set the choke. You should also have a timeout in case the car doesn't start so you don't burn up the starter.
Yes I did have in mind a time out and also it has an electric fuel pump and electric choke. All of that is taken care of... the only thing about using rpm (at least for me) is there is no speed sensors only a coil that I would have to code a pulse counter
A) I really don’t know how to go about coding that
B) it does seem like there would be more sensing hardware.
Maybe if you have a solution for that??
I was leaning heavily on the voltage drop scenario due to personal ease of building and coding.
There are tons of examples on how to make a tachometer and not really any different hardware but whichever you feel most comfortable with is the way to go.
Even with an electric choke you still have to step on the gas pedal to activate it.
I live in FL warm and sea level. really not worried about choke and the carb is bran spankin new. starts up like EFI.
I'll have to look up the Tach projects and see how they do it, Thank you