This page explains the use of the TCS3200 colorsensor 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 ambient … 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
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
Today I created a coding example which demonstrates how to read Exif data from an uploaded photo and extract the GPS location from that and show the location of where the photo was taken using Google Maps. To accomplish this, I combined two pens from CodePen into this example: “Google Maps Latitude & Longitude by … Continue reading Show location of photo in Google maps
Getting started as a project team can often be chaotic and unclear. To quickly establish some structure, first divide roles. Roles can be various, adapted to the kind of team you are. For instance for a student project team, working together on a design assignment, start with at least a chairman, a secretary and a … Continue reading Working in a project team: divide tasks and roles
I have written a class for the HiTechnic Colorsensor, which makes it possible to use this sensor with the EVShield. The example sketch requires the class EVs_HTColorSensor which you can download here. Extract the two files from the zip-file into the EVShield library folder, eg. Documents\Arduino\libraries\EVShield. Now you can use the sensor, as in this … Continue reading Using the HiTechnic Colorsensor with the EVShield
This is a a collection of links and thoughts about web design which tries to give some guidelines. It is in no way meant to be complete. First, consider web page layout Which part of the web page is visible? (scroll?) What viewport size(s)? Try aiming at least: Small (under 600px), Medium (600px – 900px) … Continue reading Design guidelines for Web Development