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 room for the center column containing the tweets (articles). This … 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
This page explains the use of the TCS3200 color sensor and shows how to create a small holder for it, which can be mounted on the Rover Car. It is also possible to just use the holder (without connecting it to the car) as it will make it easier to use and shields it from … Continue reading Using the TCS3200 color sensor
Information on how to use displays in combination with the EVShield. Small (oled) displays can be a great addition to a robot powered by an EVShield, like the Rover. It can be used to display all kinds of information about the status of the robot, like the battery voltage, speed etc. The Lego display is … Continue reading Using various displays with EVShield
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
In this example we will control a RGB LED from an Android App via a Bluetooth connection. A HM10 BLE Bluetooth module is connected to an Arduino Uno. This tutorial assumes you already have some experience with Arduino. If not, you might want to follow a basic tutorial and/or install the Arduino software (the IDE). … Continue reading Control an RGB LED from an Android App via Bluetooth
Download Android Studio at developer.android.com/studio. This is a quick guide to get started with Android Studio. For a complete Install Guide look here. Quick steps: Start the downloaded installation program (from the Download folder) Go through the installation steps, using the default settings (press Next a few times) At the final step leave the option … Continue reading Installing Android Studio
This tutorial describes how to Use App Inventor to build an App which can read the online values of a connected sensor. For this, it uses a WebViewer Component and a Clock to refresh values. This is part 2 of a series, the first part, “Create a connected sensor” can be found here. This second … Continue reading Build an App with App Inventor which can display values of a connected sensor
This tutorial demonstrates how to build a simple sensor and publish its values online (on a web server) using an ESP32 module. We will build an Arduino sketch which will read the sensor values, connect to WiFi, connect to a website and publish the values on the website. The published values can then be used … Continue reading Tutorial: Create a connected sensor