Uses a D1 Mini and Arduino code with an HTU21D for ambient sensing and two DS18B20 OneWire sensors for inlet and outlet temperature measurement. The temperature difference and its derivative across the heat pump detects the heat pump mode.

capture two channel data. give status and alert data to customer mobile as sms. Change channel calibration, alert channel and level, mobile no, add more than one mobile.

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.

ADS1115+ESP-01 (1M) OTA updated based on https://goo.gl/AH8Y3w sketch adapted to my 30A CT and 6V transformer. ESP is powered from a separate 3.3V source.

This is a weather station, to monitor the soil and Atmospheric temperature, relative humidity, and soil moisture levels during the day and night