Introduction to the Arduino BLE Nano

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

Create a connected distance sensor with an ESP32 module

This short tutorial introduces the ESP32 module (a Lolin32 Lite) and connects an HC-SR04 Ultrasonic sensor. The entire prototype will be powered by a battery and sent its data to a webserver via Wifi. It is assumed you have installed the Arduino IDE and have some basic understanding of using electronics and wiring a breadboard. Although in … Continue reading Create a connected distance sensor with an ESP32 module

Using an Optical (IR) sensor with Arduino

This short tutorial introduces the Optical (infrared) distance sensor (Sharp GP2Y0A21YK0F). It is assumed you have installed the Arduino IDE and have some basic understanding of using electronics and wiring a breadboard. If you want to learn more or if anything is unclear, check out this extensive tutorial. Although in this example we use a display, you can … Continue reading Using an Optical (IR) sensor with Arduino

Remote controlled Rover car with Arduino brain

Lego: Build remote controlled Rover car with Arduino brain

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

Control an RGB LED from an Android App via Bluetooth

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

DHT ESP32 Closeup

Tutorial: Create 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

Show location of photo in Google maps

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