The ESP32 microcontroller is a powerful and versatile platform, widely used in IoT applications due to its built-in Wi-Fi and Bluetooth capabilities. One of its standout features is support for Bluetooth Low Energy (BLE), which is an energy-efficient version of Bluetooth designed for IoT devices, wearable tech, smart home gadgets, …
Read More »ESP32 Pressure Sensor
In this tutorial, we will feature the MPS20N0040D and how to use it with the ESP32 microcontroller. It’s challenging to directly interface this pressure sensor with the ESP32 but thankfully, we have a development board that comes with a HX710B analog-to-digital converter.
Read More »Get Any Reddit Post using ESP32
Reddit’s API has been piquing my curiosity for some time. However, my past experiences with APIs, especially with Twitter and Facebook have left a bad taste in my mouth. Then one day I had the courage to try it again using ESP32 and to my surprise, it’s far easier than …
Read More »Update ESP32 Firmware through External Web Server
Launching a project into production doesn’t mean it’s 100% finished — this is why software/firmware updates exist. And your users are not programmers so you want the update process as user-friendly as possible. Thankfully, the ESP32 allows you to update its compiled code, called firmware, to be updated over the …
Read More »ESP32 WiFi Manager | Dynamic SSID and Password
If you’ve been following my tutorials on ESP32, then you’ll notice that the WiFi SSID and password are always hardcoded. This tutorial will show you a way to change the WiFi credentials without needing to edit and re-upload your sketch. Our aim is to create a simple ESP32 WiFi manager. …
Read More »Using RESTful APIs with ESP32
With its WiFi capabilities, the ESP32 can connect to API services and acquire useful (and sometimes useless) information from the web. Here’s a quick tutorial on how to connect to RESTful APIs using ESP32.
Read More »ESP32 MAX7219 WiFi Message Board
This ESP32-powered project allows you to write messages to a MAX7219 LED matrix display using your smartphone. Scaled up, this can be used as a WiFi message board for schools or signages for businesses.
Read More »ESP32 Magnetometer using HMC5883L
For this article, I will show you how to use an ESP32 microcontroller as a magnetometer – a device that measures the direction and strength of a nearby magnet. In the absence of a nearby magnet, the device detects the Earth’s magnetic field. Hence, a compass is a type of …
Read More »ESP32 Turbidity Sensor
The ESP32 has become one of my favorite microcontrollers as it’s compact, relatively cheap, and contains 125% higher memory than an Arduino UNO.
Read More »Sensor Display on ESP32 Web Server
Last time, I showed you how to setup the ESP32 development board with the Arduino programming environment. This time, I will be building a simple ESP32 web server where data from a sensor is displayed on a web page.
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