Application process any personal data.For signaling and monitoring of temperatures in domestic boiler room (wood heating, fireplace, storage tanks) created the device, which I gave the apt title of "boiler room". The processing temperature of the sensor 7, and PT100 DS18B20 cares ATmega 328 (same as in Arduino UNO) which is connected via the I2C bus to a second "master" processor ESP8266. ESP can periodically reads the temperature and displays it on: OLED display, web page, sends a notification through push notification service on the amendment below (above) the limit temperatures. Since version 1.0.2 ESP can be used for remote monitoring of this mobile application.More details about the boiler room: https://pihrt.com/elektronika/389-moje-wifi-esp8266-arduino-uno-kotelnaParameters:- Power - industrial source 230V / 5V 2A- measuring - 7x DS18B20 temperature sensor (shielded cable of 50m to each sensor to its connector - can not use the common bus between sensors DS18B20), 1x PT100 sensor- Display - OLED Display 0.96 "128x64 pixels, the website (connection via Wi-Fi as a client to the Wi-Fi router in the network), mobile application Android.- LED RUN (flashes when running in loop ATMEGA 328, after power lights and turns off when init is OK, otherwise it flashes quickly).- I2C LED (blinks when ESP8266 wants to retrieve temperatures of ATMega 328).- Monitoring - sending push notifications to mobile phone, sending email ...- output - Remotely via the website switch relay (circulation pump and flood the radiators of storage tanks). If the temperature exceeds the boiler switches on the circulation pump the time.Placement of temperature sensors:- temperature of storage tanks - AKU1, AKU2, AKU3 (3x DS18B20)- boiler temperature - BOILER (DS18B20 1)- Outside temperature - OUTDOOR (1 DS18B20)- temperature in the living room - the living room (1x DS18B20)- temperature in the bedroom - a bedroom (1x DS18B20)- Flue gas temperature in the chimney - flue (1x PT100)Measuring range:DS18B20 (sensor)- measuring range: -55 ° C to 125 ° C- measurement: range from -10 ° C to 85 ° C ± 1 ° CPT100 (sensor) - according to the embodiment of a sensor made in ChinaTemperature range: -20 ° C to 550 ℃ ± 10 ° COLED display on the screen:The OLED display shows the following information (in windows 1/3 - 3/3)- Date - Time (automatically loaded from the network via NTP)- the temperature of all sensors- IP address of the server- the power of Wi-Fi signal- Push notification status (enabled, disabled)- state relays for pump (On, Off)