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+--- Forum: KC868-AIO (https://www.kincony.com/forum/forumdisplay.php?fid=46)
+--- Thread: AIO pins 0-5v reading 3.150v (/showthread.php?tid=8010)
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RE: AIO pins 0-5v reading 3.150v - admin - 04-25-2025
sensor is output 0-5v.
esp32 hardware is 0-3.3v.
so need config by esphome yaml, let 0-5v data convert to 0-3.3v signal is ok.
RE: AIO pins 0-5v reading 3.150v - Honeybadger - 04-28-2025
(04-25-2025, 11:48 PM)admin Wrote: sensor is output 0-5v.
esp32 hardware is 0-3.3v.
so need config by esphome yaml, let 0-5v data convert to 0-3.3v signal is ok.
Let me see if I understand it correctly:
- The ADC sensor input is 0-5v
- Internally there is a step down from 0-5v to 0-3.3v (for ESP32)
- The data that we collect from Home Assistant is 0-3.3v and it has to be converted back up to 0-5v using some equation.
Is that correct or I missed something?
Question:
Is the ADC sensor good enough to measure millivolt changes accurately?
RE: AIO pins 0-5v reading 3.150v - admin - 04-28-2025
yes, you are right.
Is the ADC sensor good enough to measure millivolt changes accurately? Yes, it's enough.