K8055N analog input

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1

Hello,

I have a problem with analog input. I would like to use it to read the voltage on the diagonal resistive bridge.

the problem is: i was trying to connect 1,5V battery to the input. “+” with the A1 input and “-” with the GND, but the value in computer was still 130. It is the same value as when there was nothing connected to the input.

I’m doing something wrong?

Thank you.

2

Hi,

If you look at page 12 of the manual you will notice 3 and 4 SK2 and SK3 with the shorting blocks on you are reading the internal voltage.
Try removing SK2 for input 1 and SK3 for input 2.
Remember you do not want to apply more then 5 volts.

3

Thank you very much

4

No problem
Enjoy your project