''' some labs for EPS8266
- test the DHT11 sensor -- DHTtester
- try connect to internet -- HelloServer
- first, representation: Emoncms OnlineHumidifier-Show OnlineHumidifier-Chart OnlineHnT-Chart (both temperature & humidity)
- second, output to freeboard.io (data in dweet.io) -- esp8266_cloud
- third, output to thingSpeak '''