Design RPM interface circuit.
Budget: $30 – $250 AUD
Design circuit to derive rpm from coil negative wire to arduino. Needs to be universal and work on as many makes and models of cars as possible.
Needs to deliver rpm signal to microcontroller the same way an existing circuit does that’s taken from dash tacho.
Needs to deliver rpm signal to microcontroller the same way an existing circuit does that’s taken from dash tacho.