In this tutorial, we'll learn how to activate, manage and test Bluetooth on an ESP32 using the Arduino programming language. Bluetooth is a wireless technology widely used for communication between electronic devices. It enables you to quickly transform your system...
Training a TensorFlow2 model with Keras
In this tutorial, we'll train a MobileNetV2 TensorFlow model with Keras so that it can be applied to our problem. We'll then be able to use it in real time to classify new images. For this tutorial, we assume that you have followed the previous tutorials: using a...
Object recognition with Yolo and OpenCV
In this tutorial, we'll look at how to perform object recognition with Yolo and OpenCV, using a neural network pre-trained with deep learning. We saw in a previous tutorial how to recognize simple shapes using computer vision. This method only works for certain...
Prepare an image bank for Model training
To prepare an image database for training a neural network in object recognition, you need to recognize the images in the database yourself. This means giving them a label and a recognition zone. This tutorial follows on from the article Creating an image bank....
Object recognition with TensorFlow and OpenCV
In this tutorial, we'll look at how to perform object recognition with TensorFlow and OpenCV, using a neural network pre-trained with deep learning. We saw in a previous tutorial how to recognise simple shapes using computer vision. This method only works for certain...
Lightweight Raspberry Pi image backup
We present here a method for making a light backup and restoring a Raspberry Pi. Creating a backup, an image of your Raspberry Pi, is essential in the event of SD card corruption or power failure. On Raspberry Pi and other single-board computers, the SD card often...
Creating an application with React Native and VSCode
In this tutorial, we'll look at how to program a smartphone application using React Native and VSCode. React Native is a powerful tool for creating cross-platform applications (Android, IOs) using the JavaScript language. Visual Studio Code is a code editor for...
Text recognition with Python
In this tutorial, we'll look at how to recognize text from images using Python and Tesseract. Tesseract is a tool for recognizing characters, and therefore text, contained in an image (OCR, Optical Character Recognition). Installing Tesseract Under Linux To install...
Raspberry Pi Zero microcontroller overview
The Raspberry Pi Zero microcomputer is very compact, with an integrated Bluetooth and WiFi module. Very easy to use, it is smaller but less powerful than the Raspberry Pi3. Microcontroller features The Raspberry Pi Zero microcontroller uses the ARM11 single-core...
Configuring a Raspberry Pi as a Wifi Access Point
The Raspberry Pi can be configured as a Wi-Fi Access Point. This is useful when the Raspberry Pi doesn't have access to a wifi network and you want to connect to it locally. In this tutorial, we'll look at how to configure the Raspberry Pi to generate its own WiFi...