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Fail-safe joystick connection

I am looking for ideas to implement fail-safe function in joystick control box. At present, the 5V joystick HF11S10 is connected to STM32 ADC inputs via simple 5.1k:9.1k divider. We are revising the schematics to conform to all requirements for powered medical devices, so we would like to be able to detect the disconnected or […]