ESP32 Smarthome

Currently on hiatus

Current prototype

Web-interface made with Grafana to see the data visualised.

Basics

This project aims to create a smarthome-system that can measure, control & show various useful information, such as temperature and important local events. The exact featureset is yet to determined. :)

Hardware

Currently I use the following hardware-stuff to make this project tick. There’s more stuff to be added later.

• Bunch of dupont-wires & a prototyping board
• ESP32 microcontroller
• Dallas DS18B20 temperature sensor
• 1602 LCD for displaying the information

Software

I write the code in C++ and use ESP32 Arduino-framework as a base for functionality. Some of the other stuff used include…

• PlatformIO for project-management, library-management, flashing and so on.
• Arduino libraries for accessing the sensors, controlling the LCD, parsing JSON and so on

Features

• Polling of Dallas DS18B20 for my apartment’s temperature
• Using WiFi to connect to Internet to access OpenWeatherMap via their API to get the weather of my city
• Displaying all the useful data on the 1602 LCD
• Time-display based on NTP
• Sending the data over the Internet to Influxdb-database. I have a separate Grafana-instance that can show graphs of the data on a browser

Planned features

• Replace Dallas DS18B20 temperature sensor with a Bosch BME680 that is more accurate and does humidity, pressure & gas too
• Implement proper multithreaded code where different tasks (Sensor-polling, time, API-access etc) run separately and share data as necessary
• More?