A simple weatherstation connected to Thingspeak using the ESP8266 and BME280 multi-sensor.
The weatherstation boots itself up between given intervals, reads the sensor values, and reports them to Thingspeak.
The software tries to connect to YR.no (weather forecasting service) to pull the latest pressure values from the given area - this was done with the hopes that this pressure is defined at sea-level, but im not quite sure. The reason for getting this value, is so to test out the calculation for meters above sealevel.