send and receive from arduino

Hi. I want to create a control where I will send a signal from an Main Arduinocard to another Arduino card where the card triggers a relay, and sends a signal back to the Main Arduino board.
This will be done wirelessly. How can I make this radio controller?

Andy

How can I make this radio controller?

It would probably be a lot easier to buy a ready made pair of radios. Google XBee or Arduino RF...

There's also some cheap simple radio options at www.sureelectronics.net. Can you tell us more about what you want to do?

I have an Arduino Dua ... board. I want it to be in contact (wireless) with a temperature sensor. The sensor provides a signal to a relay that pulls when determining need for heat.

:slight_smile: