I have a question that I think should have a simple solution but I do not know for certain.
I have a on screen display (OSD). The OSD was designed for use with RC electric motors.
The on screen display reads the battery voltage and shows a % or a gauge for the remaining amount of power left in the battery.
I am using this in combination with a gasoline engine, I need to know the position of the throttle on the engine.
What I was thinking of doing was taking the lead from the OSD that monitors the battery and connecting a micro buck boost converter to supply a constant 5v from the main battery.
I was then going to run a + line from the micro buck/boost converter and run it to a potentiometer which would be connected to the arm of the carburetor so when the servo moved the arm it would rotate the pot there by (if I understand this correctly) will increase and decrease the voltage on the power out of the pot. I was going to take the power out put from the pot and run it to the + terminal of the battery lead on the OSD, I would then take the - off the micro buck boost converter and run it to the - on the battery lead of the OSD.
If I am correct in my thinking, the OSD is just monitoring for a voltage increase or decrease. So when the throttle opens it reads X volts100% and when the throttle closes it reads X voltage at 0%. I can program the OSD so that X voltage is 100% and X voltage is 0%
If I am correct in my thinking, the OSD does not have any load on it that that would overload the pot.
Am I correct in my thoughts? would a 50k ohm trimmer pot like this work? https://www.taydaelectronics.com/50k-ohm-trimmer-potentiometer-cermet-1-turn-3362p.html or one like this? https://www.sparkfun.com/products/9806
How would I wire this up, Is how I drew it correct?? Do I need any resistors?
I have a on screen display (OSD). The OSD was designed for use with RC electric motors.
The on screen display reads the battery voltage and shows a % or a gauge for the remaining amount of power left in the battery.
I am using this in combination with a gasoline engine, I need to know the position of the throttle on the engine.
What I was thinking of doing was taking the lead from the OSD that monitors the battery and connecting a micro buck boost converter to supply a constant 5v from the main battery.
I was then going to run a + line from the micro buck/boost converter and run it to a potentiometer which would be connected to the arm of the carburetor so when the servo moved the arm it would rotate the pot there by (if I understand this correctly) will increase and decrease the voltage on the power out of the pot. I was going to take the power out put from the pot and run it to the + terminal of the battery lead on the OSD, I would then take the - off the micro buck boost converter and run it to the - on the battery lead of the OSD.
If I am correct in my thinking, the OSD is just monitoring for a voltage increase or decrease. So when the throttle opens it reads X volts100% and when the throttle closes it reads X voltage at 0%. I can program the OSD so that X voltage is 100% and X voltage is 0%
If I am correct in my thinking, the OSD does not have any load on it that that would overload the pot.
Am I correct in my thoughts? would a 50k ohm trimmer pot like this work? https://www.taydaelectronics.com/50k-ohm-trimmer-potentiometer-cermet-1-turn-3362p.html or one like this? https://www.sparkfun.com/products/9806
How would I wire this up, Is how I drew it correct?? Do I need any resistors?
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