- The SensorTag acquires weather data and sends them to the Raspberry Pi Zero through BLE (Bluetooth Low Energy).
- The Node-RED flow runs on the Raspberry Pi Zero, processes the weather data and sends to the Blynk server, either on the cloud or locally, through WiFi.

- An iOS- or Android-based phone or tablet connects to the same Blynk server, either on the cloud or locally, and displays the measures on a beautiful way.

Please find the full instructions at http://www.hackster.io/rei-vilo/sensort ... red-f90c4d.
Enjoy!
