08-31-2020, 02:30 AM
arduino
1 cop steal , input signal as input 1 to ARD. (is 4 times too frequent)
run x4 freq scale up algorithm. if possible IDK if is. ill look that up later.
set output to 0 to 12v square wave
and SYNC'd right.
makes sure output of arduino is polarity sync'd correct, 0v means coil is charging and 12vdc coil is dead time.
this make take a 5volt out to 12vdc output driver, to do that, arduino is not 12vdc device.
but is easy to do with one transistor and 12vdc supply inputted, then corrrect sync polarity to get this right./
the stock tacho is just the time it takes to charge 1 capacitor inside the tach the more hits of 0v the faster it charges and needle goes higher,
0v = coil charging, or dwell , old skool.
1 cop steal , input signal as input 1 to ARD. (is 4 times too frequent)
run x4 freq scale up algorithm. if possible IDK if is. ill look that up later.
set output to 0 to 12v square wave
and SYNC'd right.
makes sure output of arduino is polarity sync'd correct, 0v means coil is charging and 12vdc coil is dead time.
this make take a 5volt out to 12vdc output driver, to do that, arduino is not 12vdc device.
but is easy to do with one transistor and 12vdc supply inputted, then corrrect sync polarity to get this right./
the stock tacho is just the time it takes to charge 1 capacitor inside the tach the more hits of 0v the faster it charges and needle goes higher,
0v = coil charging, or dwell , old skool.
http://www.fixkick.com