Introduction to Arduino and programming . Practicals which use this tutorial have an introductory presentation (pdf). We will build a temperature sensor in this tutorial and connect it with an App. It uses an DHT11 temperature & humidity sensor and Bluetooth communication with a phone. We use a BLE-Nano here, but you can also use a regular Arduino … Continue reading Tutorial: build a connected temperature sensor
Introduction to Arduino and programming . There is also a “quick walk-through video” of this tutorial. My practicals which use this tutorial have an introductory presentation (pdf). Further directions: We will build a distance meter in this tutorial. It uses an ultrasonic distance sensor to sense the distance to an object nearby. It consist of the … Continue reading Tutorial: build a distance sensor with an alarm
If you keep getting the error below (or a similar one) when trying to upload your sketch, read this article. Try the troubleshooting steps below in order. If it still fails, contact us and describe what you tried (which steps). Show verbose output of the Arduino IDE In File > Preferences do you have the … Continue reading “Error uploading sketch” in Arduino IDE and other upload issues
What options are there for the use of motors in our project? There are many types of motors. There are 3 basic types (more info): Most light servo motors, like the common SG90 (which you can borrow from Fjodor), can be used directly with an Arduino (no motor driver/controller required). For some heavier types and … Continue reading Options for additional components and power for the Arduino
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
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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
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
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
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