I am new to arduino, so please forgive if I ask the obvious...
I want to control an arduino wirelessly from my laptop (simple control messages based on midi signals to switch LEDs on and off).
Am I correct, that I would need 2 arduinos with a xbee-shield - one connected to my laptop via USB (and controlled by processing in realtime), the other somewhere in the room?
I just want to know, that I got it right, before I buy the hardware, so any help is much appreciated!
Xbee is a quality but expensive solution. Anyhow you don't need an Arduino in the PC side, just one xbee there.
At the other side you need a xbee+arduino
If you don't need to use a specific protocol, there are real unexpensive rf tx&rx digital modules for short distance serial transmission (for example, check aurel modules)
Regards