Analog Input Wrong Reading

[mosheash]

Hi there

lately, I purchased some controlling mini

i have a big problems when i working with the analog pins…..

I connected a current sensor into A0

when I read the Bits from the screw terminal i receive a very different result than the header pin

in the header pin, the readings are correct about 100 bits(from 1023) per the voltage i supplied

in the screw terminal, the reading to the same voltage was about 15 bits (from 1023)

can anyone tell me what i am missing?

[Lukas]

Hello Moshe,

please check our block diagram of the Analog/Digital INPUT here. There are some dividers in the path from the screw terminal.

Best regards,

Lukas

[mosheash]

Thanks for your help

is this means that in low voltage inputs the resolution is affected?

[Lukas]

Hello,

this means that value 1023 (100% of the resolution) is: