There are a lot of cheap quadcopter kits out there, sold ready to fly with a transmitter and battery for right around $50 USD. One of the more popular of these micro quads is the V2X2 series. They are ...
A new palm sized radio module has been created called the Rapid Radio that can be attached to a Raspberry Pi mini PC or Arduino development board in just a few minutes to communicate using radio ...
Replace awkward remote-control cables with a licence-free ISM radio link. Ready-made modules make it quick to build.