Rain-Gauge-Esp8266-NTP-RTC

Using Croduino Nova2 ESP8266, Blynk, Arduino OTA, NTP servers, RTC internal clock and precipitation sensor, a precipitation meter was made. Since the rainfall measurement is reset every day at midnight, the microcontroller needs to know what time it is. Each time the microcontroller is started and connected to the Internet, it pulls the time from the NTP server and starts the internal RTC clock with the obtained time value. Because if the time was constantly withdrawn from the NTP server in case of being left without an Internet network, the rainfall value would not be reseted at midnight, so it only withdraws time from the NTP server once and later relies on the internal RTC.

Parameters-in-the-greenhouse-automatic-opening-and-closing-of-the-greenhouse-user-notification

he system measures soil moisture at two positions in the greenhouse, measures the amount of light and temperature in the greenhouse. User has an insight into current and historical measurements of parameters in the form of a time diagram via the application interface on the mobile device. In relation to the temperature in the greenhouse, the relay controls the moving part of the greenhouse, ie the greenhouse is opened in case of too high a temperature to avoid possible harmful consequences. The user can control the temperature level at which the greenhouse will be opened via the application interface, and a notification will be sent to the mobile device each time the greenhouse is opened. It can also manage notifications related to soil moisture sensors, ie it can set which humidity value will receive event notifications (humidity high, humidity too high, humidity low, humidity too low), as well as temperatures (temperature high, temperature too high, temperature low, temperature too low).