The objective of this post is to explain how to connect to a MQTT broker and subscribe to a topic, using the ESP32 and the Arduino IDE libraries. Introduction The objective of this post is to explain how to connect to a MQTT broker and subscribe to a topic, using the ESP32 and the Arduino …
ESP32: Publishing messages to MQTT topic
The objective of this post is to explain how to publish a message to a MQTT topic, using the ESP32 and the Arduino IDE libraries. Introduction The objective of this post is to explain how to publish a message to a MQTT topic, using the ESP32 and the Arduino IDE libraries. We will assume that …
ESP32: Connecting to a WiFi network
Connecting the ESP32 to a WiFi network, using the Arduino core
ESP32: Hello World
How to write a simple "Hello World" program with the ESP32, using the Arduino core.
ESP32
This post briefly explains what is the ESP32, a very powerful and cheap IoT enabled System on Chip. Introduction This post briefly explains what is the ESP32, a very powerful and cheap IoT enabled System on Chip. The ESP32 integrates both WiFi and Bluetooth support in the same chip [1], offering a wide range of …
ESP32: A cheap and powerful microcontroller
Brief introduction to the ESP32, a microcontroller from Espressif.
ESP8266: Connecting to MQTT broker
The objective of this post is to explain how to connect the ESP8266 to a MQTT broker, hosted on CloudMQTT. Introduction The objective of this post is to explain how to connect the ESP8266 to a MQTT broker. If you are not familiar with the protocol, you can read more about here. Although this example …
ESP8266: Get MAC address
The objective of this short post is to explain how to get the MAC address of the ESP8266. Introduction The objective of this short post is to explain how to get the MAC address of the ESP8266. Explaining in detail what is a MAC address is outside of the scope of this post. But, just …
ESP8266: NodeMCU Pin mappings
How to use the ESP8266 library defined constants that have the correct mapping between NodeMCU and ESP8266 pins
ESP8266 Webserver: Accessing the body of a HTTP request
The objective of this post is to explain how to get the body of a request sent to a HTTP webserver runing on the ESP8266. Introduction The objective of this post is to explain how to get the body of a request sent to a HTTP webserver running on the ESP8266. In this example we …
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