This channel tracks snow depth. The device uses a Maxbotix ultrasonic distance sensor interfaced to a ESP8266 Wifi module. The code is written on the Arduino platform to support over-the-air program updates and uplinking to Thingspeak. Designed by Jeff E.
Solar Heaters (3 different boxes that were a science project) are connected in series and are being used as a supplemental heat source for my bedroom. I am using 4 DS18B20 sensors, 1 DHT11, a servo, and 3 fans. These are all being controlled by NodeMCU.