Category Archives: Uncategorized

The ESP32 can act as a Wi-Fi station, as an access point, or both. In this tutorial we’ll show you how to set the ESP32 as an access point using Arduino IDE. In most projects with the ESP32, we connect the ESP32 to a wireless router (see our ESP32 web server tutorial). This way we canContinue reading “How to Set an ESP32 Access Point (AP) for Web Server”

If you’re running a web server or Wi-Fi client with your ESP32 and every time you restart your board the ESP32 has a new IP address, you can follow this tutorial to assign a static/fixed IP address to your ESP32 board. Static/Fixed IP Address Sketch To show you how to fix your ESP32 IP address,Continue reading “ESP32 Static/Fixed IP Address”

The ESP32-CAM comes with an on-board Wi-Fi antenna, but it also has an IPEX connector if you want to use an external antenna. Using an external antenna can solve problems related with slow video streaming web servers and other connectivity problems. This tutorial shows how to use an external antenna with the ESP32-CAM. How to connect an ExternalContinue reading “ESP32-CAM Connect External Antenna (Extend Wi-Fi Coverage)”

This project shows how to log data with timestamps to a microSD card using the ESP32. As an example, we’ll log temperature readings from the DS18B20 sensor every 10 minutes. The ESP32 will be in deep sleep mode between each reading, and it will request the date and time using Network Time Protocol (NTP). ProjectContinue reading “ESP32 Data Logging Temperature to MicroSD Card”

In this article we’ll show you how to store and read values from the ESP32 flash memory using Arduino IDE. The data saved in the flash memory remains there even when the ESP32 resets or when power is removed. As an example we’ll show you how to save the last GPIO state. Before proceeding withContinue reading “ESP32 Flash Memory – Store Permanent Data (Write and Read)”

This post is an introduction to Node-RED dashboard with Raspberry Pi. We’ll cover how to install Node-RED Dashboard and exemplify how to build a graphical user interface. Prerequisites: You need a Raspberry Pi board – read Best Raspberry Pi Starter Kits You should already be familiar with Raspberry Pi – read Getting Started with Raspberry Pi. You should haveContinue reading “Getting Started with Node-RED Dashboard”

This post is an introductory guide to Node-RED. I’ll cover what’s Node-RED, how to install it, how to use the visual interface to create a simple flow. Prerequisites Before you start reading this blog post, I’m making an assumption that you are already familiar with the Raspberry Pi and you know how to install the operating system.Continue reading “Getting Started with Node-RED on Raspberry Pi”

This post is an introduction to the Raspberry Pi. You’ll see what is the Raspberry Pi and what can you use it for. You’ll explore its features and see what sets it apart from a normal computer. Finally, we’ll also show you how to get started by installing the operating system, and what accessories doContinue reading “Getting Started with Raspberry Pi 3”

There’s an add-on for the Arduino IDE that allows you to program the ESP32 using the Arduino IDE and its programming language. In this tutorial we’ll show you how to install the ESP32 board in the Arduino IDE on Mac OS X or Linux. If you’re using a Windows PC follow these instructions instead.  Watch the VideoContinue reading “Installing the ESP32 Board in Arduino IDE (Mac OS X and Linux instructions)”