Yes, you can connect all the ground pins together.
The way to be certain is to test with an ohmmeter. The resistance between ground and 3.3V should not change as the slider is moved.
You may also want to think whether or not you have the GND and 3.3V in the correct order. If they were linear potentiometers it would not matter, but for logarithmic ones it does. With the slider in the middle, the resistance between slider and ground should be less than the resistance between slider and 3.3V.
The way to be certain is to test with an ohmmeter. The resistance between ground and 3.3V should not change as the slider is moved.
You may also want to think whether or not you have the GND and 3.3V in the correct order. If they were linear potentiometers it would not matter, but for logarithmic ones it does. With the slider in the middle, the resistance between slider and ground should be less than the resistance between slider and 3.3V.
Statistics: Posted by Memotech Bill — Wed Jul 24, 2024 12:02 pm