FreeRTOS is a real-time operating system (RTOS) for embedded systems. It is based on a microkernel architecture (explained below) and has been ported to various microcontrollers. FreeRTOS is an open-source RTOS designed for embedded systems and IoT devices. Richard Barry initiated its development in 2003, and since then, it has garnered significant traction in various industries due to its … [Read more...]
Reader/Writer Lock in Microcontrollers: Explained With Code Examples
In computer science, a lock or locking is the act of blocking access to equipment. Such a lock allows a process to have exclusive access to a resource, i.e. with the guarantee that no other process will read or modify that resource as long as the lock is in place. Locking is often used in process synchronization as well as in file and database systems to ensure atomic and consistent read and write … [Read more...]
What is Design Thinking
Design Thinking is an approach that aims to solve problems and develop new ideas. The aim is to find solutions that are convincing from the user's point of view on the one hand, and market and product-oriented on the other. According to the experts, simply put, design thinking is about using the "sensitivity and methodologies of a designer to balance people's needs with what is technologically … [Read more...]
Difference Between MySQL and PostgreSQL: Explained With Example
In the realm of relational database management systems (RDBMS), MySQL and PostgreSQL stand as two heavyweight contenders, each boasting its own set of strengths, capabilities, and loyal user bases. While both databases share similarities in their relational model and SQL compliance, a deeper examination reveals distinct differences in terms of features, performance, and suitability for various use … [Read more...]
Programming the ESP32: ESP-IDF vs Arduino IDE
The ESP32 microcontroller has emerged as a versatile platform for IoT (Internet of Things) development, offering robust connectivity, powerful processing capabilities, and a vibrant ecosystem of development tools. When it comes to programming the ESP32, developers have two primary options: Espressif IoT Development Framework (ESP-IDF) and Arduino IDE. Introduction to ESP-IDF and Arduino … [Read more...]
Photographing Through Glass: Tips to Prevent Reflections
Photographing through glass or windows can present unique challenges for photographers. Reflections, glare, and unwanted distortions often obscure the desired subject, leading to frustration and disappointment. However, with the right techniques and understanding of light and angles, photographers can overcome these obstacles and capture compelling images that transcend the barrier of glass. In … [Read more...]
Serial Monitor Tools for Arduino, ESP Line (For Hobbyists)
In the world of microcontroller programming, the Serial Monitor stands as a silent yet indispensable companion, facilitating communication between your dev board and your computer. While its name might not evoke excitement at first glance, understanding its functionality unlocks a realm of possibilities in debugging, data logging, and real-time interaction with your projects. In this article, we … [Read more...]
What is Semaphor? Explained With Example
In the vast digital landscape where software systems communicate and execute concurrently, the need for synchronization arises to ensure smooth and reliable operation. Among the myriad of tools available for this purpose, one stalwart stands out: the semaphore. Semaphores, though conceptually simple, play a crucial role in coordinating access to shared resources in multi-threaded environments. A … [Read more...]
How to Program ESP32 Devices Using the ESP-IDF Framework (CLI)
The ESP32 microcontroller, developed by Espressif Systems, has gained widespread popularity for its versatility, low cost, and robust performance. To harness the full potential of ESP32 devices and develop feature-rich applications, developers often rely on the Espressif IoT Development Framework (ESP-IDF). In this article, we'll explore the process of programming ESP32 devices using the ESP-IDF … [Read more...]
What is Scaling and Upscaling
In computer graphics and digital image processing, scaling refers to the resize of a digital image. In video technology, the enlargement of digital material is also referred to as upscaling or resolution enhancement. When scaling a vector graphic, the graphic primitives that make up the vector graphic are stretched by geometric transformation before rasterization, which does not cause any loss of … [Read more...]
What is Mutex? Explained With Example
The term mutual exclusion or mutex (abbreviation for mutual ual exclusion) refers to a group of procedures with which the problem of the critical section is solved. Mutex methods prevent concurrent processes or threads from changing shared data structures in an uncoordinated manner at the same time or in a temporally entangled manner, which can cause the data structures to become inconsistent, … [Read more...]