As the switch rotates a different resistor is selected letting an engine ECU know what gear a motorcycle engine is in.
am wanting to simulate a rotary switch circuit that has 6 different resistors on it. As the switch rotates a different resistor is selected letting an engine ECU know what gear a motorcycle engine is in.......with current being the variable.
That sounds like heavy current, not the sort of thing you can get a chip to do.
Have you measured the current or do you know the resistor values and voltage?
As the resistors are connected to ground, I would consider using 5 or 6 2N7000 small signal mosfets driven from digital pins. Bipolar transistors might work, but the saturation voltage of a bipolar transistor voltage might cause problems, depending on how the ECU senses the resistance.
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