There are some results but even though I unplug the sensor it keeps measuring similar value. Also Irms value is about 200 all the time. Is that normal or what causes the error?
Thank you
Hi,
Find attached a schematic of your project.
The circuit biases the current transformer so with no current V1 has half Vcc or 1/2 of 5Vdc= 2.5V.
When AC is conducted through the transformer, the output will be an AC signal on the 2.5Vdc.
The library converts this reading to RMS.
With the coil disconnected your should have 0 Arms.
Tom....
As you may gather I have an aversion to fritzy diagrams, they are not schematics, and do not very clearly show how a circuit works.
(Sorry schematic shows A0 not A1)
I hope you aren't trying to measure DC Current, this unit only measures AC current.
you have lots of jumper wires to connect the different devices.
you have 10k highlighted but boxed over 2 resistors.
looks like they are supposed to be two to create a voltage dividor. I assume that the note should be 2x10k
it also looks like the green jumper from the voltage divider is next to the yellow that connects to (or is supposed to connect to) the voltage divider.