🏠 [vol.2] Home Assistant ESP32 ESPHome Modbus RTU RS485 DS18B20 simple steps for beginners

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📌 Part 2: Connecting RS485 Device (DS18B20 Temperature Sensor) to ESP32 with ESPHome | Modbus RTU Setup

In this second part of the tutorial, we’ll connect an RS485 temperature sensor (DS18B20) to the ESP32 using Modbus RTU protocol and configure it in ESPHome. I’ll walk you through the process of wiring the sensor, setting up the Modbus connection, and integrating it with Home Assistant.

🔹 Topics covered:
✔ Wiring the DS18B20 sensor to the ESP32 via RS485
✔ Configuring Modbus RTU protocol in ESPHome
✔ Adding the temperature sensor to Home Assistant
✔ Testing the sensor and monitoring its values in Home Assistant

📌 Useful links:
🔗 ESPHome official documentation : https://esphome.io/
🔗 Home Assistant official site : https://www.home-assistant.io/

👍 If you found this part useful, don’t forget to like, share, and subscribe for more Home Assistant and ESPHome tutorials! 🚀

00:00 Intro
00:04 Connection diagram view
00:25 Components prices
01:18 Modbus RTU communication/registers
01:53 Connection diagram explenation
02:23 HA preparation ESP32 script
03:11 ESP32 programming
03:33 ESP32 first booting and data sharing
03:47 HA sensors adding to dashboard

Modbus Tool:
https://www.modbustools.com/modbus_poll.html
https://www.powerhud.com/en/free-modbus-tester/

English Manual R46CA01:
https://www.scribd.com/document/716282673/R46CA01-setting