Need Help reading 10volts with my Nano

Hello
I'm sort of new to Arduino and I'm trying to read 10 volts with a analog pin but they can only read up to 5 volts. When the Arduino reads more than 9.5 volts it should trigger a relay. Can anyone help me with this.
Bradley

You can use a voltage divider to proportionally reduce the voltage. In this case two equal-value resistors will cut the voltage in half. The resistor values are not too critical but I'd use two 10K resistors.

Will I still be able to read the 9.5 volts with a voltage divider?

Is 9.5V/2 less than 5V?

Yes but will I have to add the two values together from the two analog pins to get the 9.5 volt value?

What two analog pins? A voltage divider feeds one pin. Google, "voltage divider".

Ok, I didn't know that and I also I don't know how a voltage divider works so ill have to figure that out as well.

simply follow the link that was provided in reply #2

If you want to fast track it, Google "Arduino voltage divider"...

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.