Learn how to count products on a conveyor belt with a distance sensor. This article explains how to use a distance sensor for counting objects. In this case, we have a conveyor belt with products, which we will count. This article is part of a lecture on use of sensors in Industry 4.0. The setup … Continue reading Object counting with distance sensors
This short tutorial introduces the ESP32 module (a Lolin32 Lite) and connects an HC-SR04 Ultrasonic sensor. The entire prototype will be powered by a battery and sent its data to a webserver via Wifi. It is assumed you have installed the Arduino IDE and have some basic understanding of using electronics and wiring a breadboard. Although in … Continue reading Create a connected distance sensor with an ESP32 module
This short tutorial introduces the Optical (infrared) distance sensor (Sharp GP2Y0A21YK0F). It is assumed you have installed the Arduino IDE and have some basic understanding of using electronics and wiring a breadboard. If you want to learn more or if anything is unclear, check out this extensive tutorial. Although in this example we use a display, you can … Continue reading Using an Optical (IR) sensor with Arduino
This short tutorial introduces HC-SR04 Ultrasonic sensor. It is assumed you have installed the Arduino IDE and have some basic understanding of using electronics and wiring a breadboard. If you want to learn more or if anything is unclear, check out this extensive tutorial. Although in this example we use a display, you can also do without … Continue reading Using an Ultrasonic sensor with Arduino
Information on how to use an 0.96 inch OLED Display (128*64 pixels) with an Arduino. This is an i2c module, which makes it easy to connect as it has only 4 wires. It is assumed you have installed the Arduino IDE and have some basic understanding of using electronics and wiring a breadboard. To use … Continue reading Using an OLED Display with Arduino
A new tutorial is available which introduces steps to create an App mockup using Figma. Figma is an online prototyping tool which can be used to design Apps and websites. This tutorial introduces the basics of prototyping an app with Figma. It quickly ‘touches’ all necessary steps without going into too much detail. You can … Continue reading How to create an App mockup with Figma – a tutorial
A standard gallery in WordPress does not have a lightbox. It just adds a set of thumbnail images to the page. Learn to create a gallery with a lightbox which allows you to click the image and view it in an overlay. It also adds navigation (a next and previous arrow to quickly go through … Continue reading Create a gallery with a lightbox
Update: there is an easier solution: use a browser extension. Twitter recently changed the interface of its website completely. I did not like it really and decided to do something about it. I installed the Chrome extension “User-CSS” which can ‘inject’ any CSS code for a site. I changed the columns widths to make more … Continue reading Restyle any website – the Twitter case
This tutorial uses the Arduino Nano, but you may also use an Arduino Uno. You might need the Arduino Nano pinout diagram or an other diagram for your particular model of Arduino. We are going to use the diagram below to build it. But if you are inexperienced each step is explained in detail. First, … Continue reading Use DHT11 temperature and humidity sensor with display
This article highlights four different ways you can make sounds with the Arduino or play music. It starts with the easiest one: (1) adding a small buzzer, then (2) a standard loudspeaker, then (3) using your smartphone as the speaker via an connected app. It ends (4) with using an MP3 module. A tutorial which … Continue reading Sounds and music with Arduino