Arduino Mega + Ethernet Shield integration with HA via MQTT

<p>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 &nbsp; &nbsp; 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 &#8230;</p>

Firmata arduino

<p>Original : http://www.firmata.org/wiki/Main_Page https://github.com/firmata/arduino Firmata is a protocol for communicating with microcontrollers from software on a host computer. The protocol can be implemented in firmware on any microcontroller architecture as well as &#8230;</p>

TCP/IP one Chip

<p> TCP/IP Standalone  Chip-by-Chip Fully hardwired TCP/IP stack One Chip .</p>
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