What is your favourite way to protect an ADC input? Things like STM32 have no real protection on pins in analog mode, which makes a basic potential divider approach paired with over-voltage a concerning situation.
Consider measuring battery voltage, where the battery is much higher than the ADC's max (e.g: +12v vs +3.3v).
Zeners start to have non-trivial leakage current near their working voltage - when you protect the ADC properly, the signal distorts at higher voltages.
Attie Grande
npub176…x772n
2026-02-02 12:29:06 UTC
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wss://relay.ditto.pubPublished at
2026-02-02 12:29:06 UTCEvent JSON
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