As I understand - voltage readings (5V through resistor/rheostat connected to analog input) in it's first place is what should make Arduino to read sender values (analog read). Then these values will mapped to digital values.After that, analog write as PWM should let me control gauge readings (digital signal will be modified to virtual analog modifying rheostat I can say so).
Does it mean that PWM output of arduino should be connected to MOSFET that will continuously switch gauge sender input wire to ground?
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