Arduino Mega + Ethernet Shield integration with HA via MQTT

Original :

https://ai-speaker.discourse.group/t/integracja-arduino-mega-ethernet-shield-z-ha-przez-mqtt/212

https://github.com/ironek69/Arduino-to-Home-Assistant-MQTT-multisensor

What a multisensor can do:

• Room temperature reading; ( BME 280 sensor: temperature, humidity, pressure, altitude 2)
• Indoor Humidity Reading;
• Room pressure reading;
• Reading the light intensity in the room; ( Analog sensor) 2
• Displaying the above parameters on the display; (OLED Display 0.91) 3
• Flame / fire sensor and reporting to HA; ( https://botland.com.pl/pl/czujniki-temperatury/4461-czujnik-awodieni-760-1100nm-analogowy.html 9)
• When flames are detected, lighting, diode and buzzer are turned on ;
• Room lighting – 433MHz remote control;
• Control of communication with the control panel on the Arduino Mega – in the absence of communication, the red LED flashes;
• Room temperature and lighting control with a 433MHz remote control
• Turning off the fire alarm / red led + buzzer by means of a 433MHz remote control
• Receiving RF codes 433; ( RF receiver 433 MHz 1)
• Communication with Arduino Mega 2560 via RS 485. 9
• In addition to Arduino nano, I used Grove – Base Shield for Arduino Nano 1and wires with connectors for Grove that I cut in half and soldered to the sensors 2
• I stuffed everything into the housing.

(Links to individual modules used in the project after hovering the mouse over)

A video of how the flame detection and LED lighting control works: