Category Archives: Education

BLE-Nano with RGB LED

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

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

Countdown timers and executing tasks in parallel on an Arduino

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!): Full example : oled_display_countdown_start_button.ino This will countdown from 10 to 0 in ten seconds. If you prefer to display the number … 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

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 this assignment, or via … Continue reading Create a stand-alone Java App that displays info from a connected sensor