Received signal strength indication implemented with nRF51822 and pseudo chart send to the COM(UART) of the PC. Nice little measuring device.
If you want to try it yourself you can download compiled image from here RSSI.hex
Bluetooth measured signal
We started working with nRF51822 development kit, a bluetooth low energy and 2.4GHz proprietary SOC. Interesting is the usage of a self developed main board instead of Nordic Semiconductor nRFgo Starter Kit. Temperature-humidity sensor is DHT22. Bluetooth is working in a broadcasting mode(advertising, non-connectable).