Yaay. Old thread back from the dead.
Summary: Seeeduino Mega's do not work with stock MPGuino code. I've tried this, but you're welcome to try it again if you want.
I'm now rockin a '328, in a 2004 Honda Civic DX, standard screen.
Since the 328 still has more code room, I'm putting the temp sensor idea on hold, and putting an RPM meter on the front burner. A lot of people seem to be interested in getting RPM, so why the heck not. I'm also scrapping the accelerometer idea for now. I'm no longer in a performance handling car (the prelude had 4WS, that's why I wanted it), so it's moot for me.
Right now I'm attempting to duplicate the VSS code but have it renamed RPM and instantRPM. I don't know if that's how to do it or not, but it's what I'm trying.
If someone wants to give me some input on what I'm thinking, that would be -awesome- since I have NO CLUE what I'm doing:
A: Should I have the input pin on the Digital I/O side, or the PWM side with the VSS?
B: Would it be workable (albeit primitive) to have a "custom 2" screen that simply displays RPM? I mean have it just take the raw input from the RPM (resistored of course), and have it run through lcd.print command? *I know this probably makes little sense, but I'm trying
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If somebody already has this coded, they should post it in the Code Hacks section, as they would make probably a ton of people happy.