Energy harvesting is the process of extracting small amounts of electrical energy from sources such as ambient temperature, vibrations, or air currents for low-power mobile devices. The structures used for this purpose are also referred to as nanogenerators. Energy harvesting avoids the limitations of wired power or batteries in wireless technologies. Energy harvesting is important for the energy … [Read more...]
Basics on Rotary Encoder
A rotary encoder is a rotary encoder that usually provides digital output signals that need to be decoded at the other end of the sensor line in the evaluation device. Therefore, it is also called a rotary encoder. "Encoder" is sometimes used as a generic term for all angular position encoders. Differences in the Way Signals are Evaluated Incremental Encoders Incremental … [Read more...]
What is Redundancy?
In information theory, the term redundancy describes information or data that is present multiple times in an information source. A unit of information is redundant if it can be omitted without loss of information. Identifying and removing such redundancies is called deduplication. Redundant is the part of a message that does not contain any information. The redundant part of the message can be … [Read more...]
What is Leadership Process
The management process is a part of the work process that must be repeatedly controlled by a manager within a business entity in a person- and factual manner. Economic entities with management processes include companies, the state authorities, military, governments, schools/universities and other associations of persons. Here, leadership processes take place in compliance with the management … [Read more...]
Automatic Room Light Controller With Arduino and PIR Sensor
In our earlier articles, we have explained What is a PIR Sensor, How it Works, and Arduino Light Sensor with LDR. In this project, we will set up an automatic light control system using Arduino. You can use Arduino UNO or any Arduino-compatible microcontroller board, such as ATtiny85. If we use only a PIR Sensor to control the light then it will become ON even during the daytime. So we need a … [Read more...]
What is a PIR Sensor, How it Works
A pyroelectric infrared sensor, also known as a PIR sensor, is a semiconductor sensor used to detect temperature changes. PIR sensors are based on the eponymous pyroelectricity, a property of some piezoelectric semiconductor crystals. A change in temperature ΔT leads to a measurable change in the electrical voltage. PIR sensors, unlike other temperature sensors, do not react to a certain … [Read more...]
Software Maintenance and Maintainability
In software engineering, the term software maintenance refers to "the modification of a software product after its delivery in order to fix bugs, improve performance or other attributes, or make adjustments to the changed environment." The task of maintenance includes all measures to maintain the functionality of the IT processes and software used. This also includes necessary professional and … [Read more...]
What is Design Pattern in Software Architecture
Design patterns are proven solutions to recurring design problems in architecture as well as in software architecture and development. They thus represent a reusable template for problem solving that can be used in a specific context. In recent years, the design pattern approach has also attracted increasing interest in the field of human-computer interaction. Types of Design … [Read more...]
Arduino Light Sensor: Circuit and Code
A photoresistor, also known as a photoresistor or LDR, is a light-sensitive electrical resistor. The more light falls on the photoresistor, the smaller its resistance becomes. Compared to other light-sensitive electronic components such as photodiodes, photoresistors react very slowly. A thin layer of the photosensitive semiconductor material is applied to a ceramic substrate by sintering a … [Read more...]
Security Aspects of Mobile Banking
The term mobile banking refers to the processing of banking transactions that takes place with the help of mobile devices such as mobile phones or PDAs. It is possible to carry out mobile banking via special applications/widgets (small installed programs) or to access banking applications on the Internet directly via a mobile browser. Mobile banking differs from mobile payment, in which payment … [Read more...]
How to Install Nextcloud on Ubuntu 22.04 Server
As we have explained in earlier article, Nextcloud is a free web software for storing (and also sharing) files. Nextcloud can be considered an alternative to cloud-based SaaS services including Dropbox and Google Drive. This guide will show you how to install, and configure Nextcloud on Ubuntu 22.04 LTS on own server. As because Nextcloud is PHP MySQL based, the installation is almost like … [Read more...]