You might also consider using Moteinos http://lowpowerlab.com/moteino/
or DelTinos http://www.deltino.com/
both of which have the wireless built in. The DelTino also includes a voltage divider so it can read its own supply voltage - which can be from 3v to 16v.
I haven't tried the Moteino myself.
Thanks Robin, I'm looking to read 0-5volts. I've found an article that shows that the arduino can read about 5volts max, but voltage dividers are only a few bucks more so I might go with that.
I would like to take a voltage reading (under 5 volts, though if there is a spike I'd like to be safe)
Down to zero volts?
...and have that information sent wireless to another screen.
How will the remote node be powered?
That reads the supply voltage (Vcc). Is that what you want to do?
The reading is not linear. At one end of the range you will have significantly more resolution than at the other.
Correct, my readings will be from 0-3volts, but if there is a spike I would like to have a save zone of about 25volts or so. The distance will be anywhere from 1-15ft with no obstacles in the line of sight. I was planing on using batteries to power both systems.
I believe I have found what I am looking for in this link here http://startingelectronics.com/projects/arduino-projects/arduino-4-channel-LCD-voltmeter/
. However I am wanting to have the info that is read sent wireless to the screen.