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...
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...
To test and use the MQTT protocol, you can install an MQTT server with Mosquitto on a Windows or Linux computer. A common application is to install Mosquittoon a Raspberry Pi and use it as an MQTT server for IoT and home automation. MQTT protocol description MQTT...
It's possible to plot curves in real time on a web app using Chart.js. When you create a web app, you're bound to want to display data. The Chart.js library integrates with your html files and JavaScript scripts to plot data from sensors, files or databases. To test...
In this tutorial, we'll learn how to activate and manage Bluetooth Low Energy (BLE) on an ESP32 using the Arduino programming language. Bluetooth Low Energy is a low-energy version of Bluetooth that sends small packets of data at regular intervals. Equipment ESP32...
It is possible to work with the CAN protocol used in the automotive industry on Raspberry Pi using a CAN HAT. This allows yorto plug in and decode messages from the on-board computer, retrieving information such as fuel consumption, speed or engine rpm. Installing...
In this tutorial we configure the Raspberry Pi in headless mode. This mode can be interesting when using the microcomputer without a screen. The main advantage is a lighter installation without the desktop and unnecessary software. Configuring your Raspberry headless...
, , In this tutorial, we'll look at how to send a video stream from one machine to another using FFMPEG. Sending data between two devices, whatever it may be, is one of the major issues in connected objects (IoT). If yor'd like to create a connected camera that sends...
This article gives an overview of the components used in analog electronics. Electronic components are linked together to form an electronic circuit to perform a certain function. There are two main families of components: passive components and active components....
We'll look at how to develop a graphic object that displays a scrollable and selectable list of objects. This object can be used to create modular graphical interfaces. Creating a QScrollArea object To create a scrolling list of objects, we'll use the QScrollArea...