Category Archives: Education

Bluetooth communication between an App built with App Inventor and the BLE-Nano board

February 24, 2021Educationapp, appdev, arduino, ble-nano, bluetooth, bluetoothle, inventor, led, rgb, rgb-ledFjodor van Slooten

This tutorial describes how to build an electronic circuit with an RGB LED (a LED that can change color), and change its color using an App. It also demonstrates two-way communication over Bluetooth LE between an App built with App Inventor and the BLE-Nano board. The BLE-Nano board is basically an Arduino Nano with an … Continue reading Bluetooth communication between an App built with App Inventor and the BLE-Nano board →

Tips on using the Tawk.to chat service

September 1, 2020Education, Webchat, help, tawk.toFjodor van Slooten

Tips and information on using the chat service Tawk.to.

Using Codesandbox as a basic HTML/CSS editor

August 24, 2020Education, WebFjodor van Slooten

Codesandbox.io is and online coding environment (IDE) which can also be used as a basic HTML/CSS editor. This article briefly introduces the first steps to get started using it for basic web development. Using Codesandbox for web development has some advantages: No software needs to be installed on your computer Works in a browser If … Continue reading Using Codesandbox as a basic HTML/CSS editor →

Countdown timers and executing tasks in parallel on an Arduino

June 8, 2020Educationarduino, countdown, parallel, start, task, time, timerFjodor van Slooten

The examples in this article use an OLED display. Countdown timer example In its simplest form, a countdown timer can be coded like this, using the loop() for repetition (no for- or while-loop needed!): Download the sketch: oled_display_countdown_start_button.ino Full simulation including breadboard on Wokwi: This will countdown from 10 to 0 in ten seconds after … Continue reading Countdown timers and executing tasks in parallel on an Arduino →

Create a stand-alone Java App that displays info from a connected sensor

April 23, 2020Educationapp, connected, java, sensorFjodor van Slooten

This article assumes you have already some experience in creating Java Apps. For instance if you have done the first 2 lectures of the course Application Development. You should also have prepared the DHT temperature/humidity sensor and have a working sketch for it (eg. by completing step 1 and 2 of practical assignment 2 of … Continue reading Create a stand-alone Java App that displays info from a connected sensor →

Introduction to the Arduino BLE Nano

April 10, 2020Educationarduino, ble, ble-nano, bluetooth, communication, nano, nano-bleFjodor van Slooten

The BLE-Nano as sold here is a combination of a traditional Nano with a Bluetooth BLE module, based on the CC2540 BLE bluetooth chip. The Bluetooth module is directly connected to the TX, RX pins of the Arduino (pins 0 and 1). There is a troubleshooting section further down on this page! This is the … Continue reading Introduction to the Arduino BLE Nano →

Vibration Motor control

March 12, 2020Educationanalogwrite, arduino, motor, pwm, vibrationFjodor van Slooten

An example to control the intensity of vibration using PWM for the Vibration DC Motor Module. For example this model: Connect the module to 5V (VCC) and ground (GND) and the IN pin to any PWM pin of the Arduino. Eg. for an Arduino Uno, this can be pin 3. For an overview of PWM … Continue reading Vibration Motor control →

Android Studio: create a first interactive userinterface

February 12, 2020Educationandroid, android studio, app, dev, development, java, phone, programmingFjodor van Slooten

Part of series about Android App Development. This is the second article, in which you will learn to create a first interactive userinterface.

Getting started with Android Studio

January 20, 2020Educationandroid, android studio, app, appdev, development, java, phone, programmingFjodor van Slooten

Part of series about Android App Development: first step: installing Android Studio and create a ‘hello world’ app.

Object counting with distance sensors

November 28, 2019Educationalgorithm, count, distance, object, product, sensorFjodor van Slooten

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 →

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