@Dezert754 You have to connect the GND of both devices and a Pin of the Wipy set as Output to a Pin of the Arduino set as Input. The cables should not be long, and adding a resistor of 4.7kOhm into the wire does not hurt. Since the WiPy runs at 3.3 V and the Arduino at 5V, the level at the Arduino for a high is specified as 3.5V, so it's not sure if it works. Better use a level converter.

@matthew look at attenuation https://docs.pycom.io/chapter/firmwareapi/pycom/machine/ADC.html#adcchannel--pin-attnadcattn0db try ADC.ATTN_11DB