How to read +/- 4 volts using Arduino

Other Hardware Robotics
1

Hello:
I want to ask you if it is possible to read a voltage signal +/- 4 volts using Arduino. It is a sinus signal, which is going from +4volts to -4volts and vice versa.
Could you explain me how to do that step by step.
Thank you very much for your help.

2

For example:

div.jpg
div.jpg823×648 57.6 KB

3

I want to ask you if it is possible to read a voltage signal +/- 4 volts using Arduino.

No, the Arduino can not read negative voltages.

4

Thanks Pito !.