2019-05-02, 08:47 PM
Exactly my thoughts. Will perform some tests, also with load applied. The first parts are about to arrive, so not too long before I can start tinkering and testing 
For now I am wondering how you've implemented the 2-wire rudder-sensor option. Using 2 resistors and a potentiometer it seems impossible to me to get the same 'output' voltages as with a single potentiometer acting as voltage divider. And the voltage change will never be linear with the change in angle.. So I am very curious how this works.
Also, when using the normal 3 wire setup with a 270deg potentiometer I'll be measuring through about 90 degrees. As the rudder endstops on the boat allow about 45 degrees of travel to either side. That will mean that a 5V current fluctuates between 1.66V and 3.33V. As far as I have understood in case of the voltage and current measuring you're comparing to a lower voltage than this. Wouldn't that be a problem? Or do i have to add a second voltage divider or use the 'comparison voltage' from the Arduino instead of 5V?
Happy to learn
For now I am wondering how you've implemented the 2-wire rudder-sensor option. Using 2 resistors and a potentiometer it seems impossible to me to get the same 'output' voltages as with a single potentiometer acting as voltage divider. And the voltage change will never be linear with the change in angle.. So I am very curious how this works.
Also, when using the normal 3 wire setup with a 270deg potentiometer I'll be measuring through about 90 degrees. As the rudder endstops on the boat allow about 45 degrees of travel to either side. That will mean that a 5V current fluctuates between 1.66V and 3.33V. As far as I have understood in case of the voltage and current measuring you're comparing to a lower voltage than this. Wouldn't that be a problem? Or do i have to add a second voltage divider or use the 'comparison voltage' from the Arduino instead of 5V?
Happy to learn