General • Clean analog reading from 4 wire servo

Hello,

I've a servo that has 4 wires. The 4th wire is directly connected to the internal potentiometer of the servo. Reading the potentiometer value has quite a lot of noise in it. Normally I would read a potentiometer by connecting it to AGND (and maybe pull GPIO23 HIGH), but in this case the servo shares gnd between the potentiometer and the dc motor. How could I get a clean analog signal in this setup?

Thanks in advance

Statistics: Posted by Torsten85 — Fri Jun 07, 2024 8:58 am

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