RPM Signal Generator V2.0 /*
/ / / ()_ ____ ___ _________ __ / /
/ / / __ / / __ / __ / _ / ___/ __ / / / / /
/ // / / / / // / // / / / / / / / // / /
_// /// ./ ./_// // //_,/_/
Visit us: www.chippernut.com Written by: Jon Gulbrandson 12/28/2014 V2.1 08/08/2017
RPM SIGNAL GENERATOR
This generates a square wave using the Arduino TONE command. The output is currently confiqured to Digital Pin #5. Wire this pin directly to the input of your SHIFT LIGHT TACH SIGNAL IN No Transistor is needed.
/********** CONFIGURATION **********/
/* INSTRUCTIONS Set your RPM lowpoint (RPM_MIN) to the lowest point, do not go lower than 2000 RPM. Set your RPM highpoint (RPM_MAX) to the redline of your vehicle. The Accel_Rate variable is used for the speed at which the generator sweeps through the RPM range. A higher Accel_Rate variable will result in a slower speed. Try to keep this between (10 - 50).
Pulses per rev varies mainly by engine cylinders (4, 6, 8, etc), but may also be influenced by manufacturer, 'wasted spark' and other variables. Here's a typical chart to get you started, but to simulate your exact conditions you'll need to research. 4 cylinder = 2 pulses 6 cylinder = 3 pulses 8 cylinder = 4 pulses */