A site about programming, IoT and technology. Find tutorials for many different projects.
In this tutorial we will learn how to use placeholders to replace values at run time in a HTML file served from the ESP32 file system. We will be using the ESP32 async web server library and the Arduino core. The tests shown here were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In …
Continue reading "ESP32 web server: template processing when serving HTML from file system"
In this tutorial we will learn how to serve an external JavaScript file to be referenced by a HTML file, using the ESP32. The ESP32 will be running the Arduino core and the HTTP async web server libraries. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this tutorial we will …
Continue reading "ESP32 HTTP web server: Serving external JavaScript file"
In this tutorial we will check how to serve an external CSS file, to be included by an HTML file. This will be implemented on the ESP32 running the Arduino core and using the HTTP async web server libraries. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this tutorial we …
Continue reading "ESP32 Arduino web server: Serving external CSS file"
In this tutorial we will check how to obtain temperature measurements from a DHT22 sesnor using the ESP32, the Arduino core and timer interrupts. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board, and a DFRobot DHT22 module. Introduction In this tutorial we will check how to obtain temperature measurements from a DHT22 sensor …
Continue reading "ESP32 Arduino: Getting DHT22 sensor measurements with interrupts"
In this tutorial, we will check how we can print numbers to the serial port using different bases, more specifically in binary, octal and hexadecimal. The tests on the ESP32 were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. The tests on the ESP8266 were performed on a DFRobot’s ESP8266 FireBeetle board. Introduction In this tutorial, we will …
Continue reading "ESP32 / ESP8266 Arduino: Printing numbers to serial in different bases"
In this tutorial we will check how to setup a HTTP web server on the ESP32 that will have a websocket endpoint and that will serve a HTML file containing JavaScript code to establish a websocket connection to the server. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this …
Continue reading "ESP32 Arduino web server: Receiving data from JavaScript websocket client"
In this tutorial we will check how to use uLisp, a version of the Lisp programming language that can run on the ESP32. The tests from this tutorial were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. Introduction In this tutorial we will check how to use uLisp, a version of the Lisp programming language …
In this tutorial we will check how to setup a HTTP web server on the ESP32, which will have a websocket endpoint and will serve a HTML page. The HTML page will run a simple JavaScript application that will connect to the server using websockets and periodically receive simulated temperature measurements from the server. The …
Continue reading "ESP32 Arduino web server: Sending data to JavaScript client via websocket"
In this tutorial we will check how to serve the jQuery source file from the ESP32 and develop a very simple web page that makes use of it. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. Introduction In this tutorial we will check how to serve the jQuery source …
In this tutorial we will check how to interact with the OLED display of the AnalogLamb Fish32 board and print a "Hello World" message. Introduction In this tutorial we will check how to interact with the OLED display of the AnalogLamb Fish32 board and print a "Hello World" message. Since the display already comes connected …
Continue reading "AnalogLamb Fish32 board: Getting started with SSD1306 display"
techtutorialsx 