Voltmeter for up to 9V

Other Hardware Sensors
1

Hi All,

I've tried searching but can't find anything. I can use my Arduino to act as a voltmeter for up to 5V - but I need to measure up to 9V batteries. I obviously can't plug 9V directly to the analogue input pins.

Can anyone point me in the right direction to measuring up to 9V?

Thanks,
Ross.

2

http://www.raltron.com/cust/tools/voltage_divider.asp

3

Osgeld:
http://www.raltron.com/cust/tools/voltage_divider.asp

Perfect. Thank you.