BLE is king for hobby tinkering. You can even re-use the common and dead cheap NRF24L01+ radio module with some hacks [1]. [1]: http://hackaday.com/2013/09/21/

BLE is king for hobby tinkering. You can even re-use the common and dead cheap NRF24L01+ radio module with some hacks [1]. [1]: http://hackaday.com/2013/09/21/sending-data-over-bluetooth-low-energy-with-a-cheap-nrf24l01-module/ http://hackaday.com/2013/09/21/sending-data-over-bluetooth-l...