Arduino Freetronics Cube4 - battery and nRF24L01+ transceiver

Описание: Started work on updating a Freetronics Cube4 kit (http://www.freetronics.com/collection.... I'm making it a wireless device by adding a lipoly battery and integrating a charger (MCP73831) into its USB power rail, and finally adding a 2.4GHz transceiver (nRF24L01+) so it can send and receive data.