So I got ASC712 sensor and installed it on the device (coffee heater). Since it is 5A sensor I did not attach it to the wires leading up to the heater itself, as I believe it can draw over 20A of current, I connected it to an indicator lamp connected in parallel to the heater. This way I think it will not draw that much current.
Anyway, it is connected and working, by that I mean I can read a nominal value of 2.5V on the measurement pin with multimeter. I can also measure that with the Arduino.
The problem is that it doesn't matter if heater is on or off, it is always 2.5V (give or take 0.02V shift). I tried switching the wires to the sensor but that should and did not give any effect. Any other idea why it is not measuring anything?
Best regards, D.