Solution to create home network via nrf24 and arduino.
Plus LEDcontrol, DHT11(temperature sensor), IR control, button control, IR motion Sensor.
Connect 2.4Ghz Nordic NRF24L01+ transceiver to Arduino and run the pingpair_ack example sketch from the RF24 library. A pair of these will communicate over a range of approx 10-20m indoors with 2 concrete walls in-between. Range outdoors is approx 20-40m. The scanner sketch is also useful to find free channel in heavy wifi traffic.
MySensors Standard Board
Arduino Pro Mini + NRF24L01+
2 Sensor inputs
10 pin expansion header for connecting an expansion board(to be made)
The expansion board will have 4 extra digital inputs/outputs and 2 Analog inputs