I have been playing with small engines and have been using the 'old school' neon bulb with a resistor to detect the ignition voltage while cranking the engine by hand. It would be nice to have a meter with a digital readout or a graph. Is there any reason not do a voltage divider and sample the voltage with a PIC ?
20K volts max would be enough for these engines. So for a 5V PIC 20000V/5V = 4000 so a 4000:1 divider. The maximum recommended impedance for analog sources is 10 k so that should work.
Suggestions?
3v0
20K volts max would be enough for these engines. So for a 5V PIC 20000V/5V = 4000 so a 4000:1 divider. The maximum recommended impedance for analog sources is 10 k so that should work.
Suggestions?
3v0