A Wemos D1 Mini has a 220k:100k voltage divider on the A/D input.
A clamp-on sensor is in this case as bad as an ACS sensor, because Aref of an ESP8266 is not related to it's VCC.
But at least it's a lot safer.
Leo..
A Wemos D1 Mini has a 220k:100k voltage divider on the A/D input.
A clamp-on sensor is in this case as bad as an ACS sensor, because Aref of an ESP8266 is not related to it's VCC.
But at least it's a lot safer.
Leo..