DHT22 Archives • DIY Projects

ESP8266 + DHT22 + MQTT: make a connected object IoT and include it in Home Assistant

7 January 2018 Home Assistant, Home Automation Server

ESP8266 + DHT22 + MQTT, here's how we will learn how to make our first connected object (a temperature probe) and connect it to the Home Assistant server. To realize this connected object we will need a WiFi module ESP8266, a DHT22 temperature and ...

#Deal: temperature and humidity measurement DHT22 for Arduino, ESP8266, ESP Easy, Raspberry Pi projects

27 October 2017 Deals

With the DHT11, the DHT22 sensor is the basic sensor used in most Arduino, ESP8266 and Raspberry Pi tutorials. It is very economical and allows for very simple practical measurements of its environment. This tutorial explains how to measure ...

#Deals: ESP Easy compatible sensors, actuators, analog or digital inputs

27 October 2017 Deals

The ESP Easy firmware supports a very large number of sensors, actuators. If you are limited by the unique analog input and the number of inputs / outputs offered by ESP8266 WiFi modules, you can add analog or digital input boards. Atmospheric ...

Include ESP8266 + DHT22 + Homie MQTT IoT in Home Assistant (HASS)

17 July 2017 Advanced 2

After introducing the Homie library in the two previous articles (well starting with Homie, programming principle), it is time to move on to a complete example of application. In this tutorial we will learn how to include a ...

First project Homie ESP8266: publish in MQTT measurements of a DHT22 probe

5 July 2017 Advanced

Previously, we discovered the Homie library which simplifies the writing of Arduino code to develop connected objects ESP8266 which communicate by MQTT messages. In this article we will discuss in more detail how to use the ...

Use Node-RED to create a gateway between MySensors and Blynk (local server)

26 April 2017 Blynk

Blynk is great for using and control connected objects from your iOS or Android smartphone. If you have developed objects connected using the MySensors library to communicate over long distances using radio waves, it is very easy to ...

ESP8266 (Web Client): Sending Data to Jeedom in TCP / IP Wireless (JSON API) – Part 1

7 April 2017 ESP8266

We continue our series of articles on HTTP (TCP/IP) data exchange between an ESP8266 and the Jeedom Home Automation Server. Jeedom provides an API as complete as Domoticz. The documentation is available here. We will go a little faster than for ...

Driving the GPIO of the ESP8266 (Web Server) from Domoticz to TCP/IP Wireless – Part 2

31 March 2017 Advanced

We continue today the tutorial dedicated to the exchange of data between Domoticz and an ESP8266 by HTTP request and more particularly how to control the GPIO from Domoticz. In the previous article, we set up sending data from an ...

ESP8266 (Web Client): Sending Data to Domoticz in TCP/IP Wireless (API/JSON) – Part 1

24 March 2017 Advanced

In this tutorial, we will use the ESP8266Client and ESP8266HTTPClient libraries to implement TCP/IP communication between and an ESP8266 NodeMCU module and the Domoticz API/JSON interface. We will use a temperature and humidity ...

ESP8266 (Web Server – Part 5): how to use Google Charts to display gauges and charts

20 March 2017 Confirmed 10

Now that we have a records we will add graphics to the Web interface of the ESP8266 using the Google Charts library. There are many libraries to create graphics and gauges in Javascript / HTML5. Google Charts is a very rich ...

Tag: DHT22