Using an Ultrasonic 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. Although in this example we use a display, you can also do without it. To use this sensor, you can connect it to power (GND and VCC, this must … Continue reading Using an Ultrasonic sensor with Arduino

How to create an App mockup with Figma – a tutorial

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

Restyle any website – the Twitter case

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

Use DHT11 temperature and humidity sensor with display

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

Remote controlled Rover car with Arduino brain

Lego: Build remote controlled Rover car with Arduino brain

Learn how to build a remote controlled Rover car with Lego Mindstorms, with an Arduino ‘brain’, which can be remote controlled via Bluetooth with a phone. This guide uses parts from the Steering rover example on nxtprograms.com. It is also inspired by the NXT Dune Buggy.Lego parts shown here might be of different color depending … Continue reading Lego: Build remote controlled Rover car with Arduino brain