Tension arm with pot

[PM490]

@cpixip

the angle resolution of the potentiometer + tension arm setup, if they are connected directly to a DAC, is very low. I did not bother to design a conditioning circuit with opamps and I paid the price later with developing a lot of weird software routines.

@cpixip based on your posting on this thread, when I prototyped the dancing-arm I made it as short as I could, which it would translate into a larger angle, also a larger voltage change with tension. In regards to conditioning, I connected it directly to the ADC and a couple of small capacitors quiet the reading nicely.

Sharing failure - Time Of Flight Sensor and sprocket-less transport

@friolator thanks for the transport of the Magnatech, interesting design. Had the opportunity to do an initial testing of the potentiometer dancing arm, it worked well. It is powered with the 3.3V output from the Pico board, and initially the ADC values were jumping around a bit. For minimum conditioning a 1 uF capacitor was placed in parallel to the potentiometer, and also a 100nF capacitor to quiet the middle leg into the ADC, and that basic conditioning was enough to get good stable readings…