Our This guide ESP32 Arduino IoT Relay Control is self-hosted. The working result is here. This kind of project serves the purpose but the UI is just pathetic and you can not easily convert it to an Android or iOS app. Most of us want a working system to get a toggle button control like this one. These days, you have a lot of options for UI such as React.js or just Twitter Bootstrap. You have … [Read more...]
Computer and Internet
Computer and Internet is catchall section of core computing categories including Cloud Computing, Digital Photography, Virtualization, Networking, Protocols and Others' which are not otherwise more subcategorized. Here also you will get unique articles and news on computer hardware, Software, Networking and Protocols.
What is Cathodoluminescence?
Cathodoluminescence is a special form of luminescence in which an electron beam coming from an electron source hits a solid surface and stimulates it to emit light, i.e. electromagnetic radiation (functional principle of cathode ray tube). In geology, mineralogy and materials science, an optical cathodoluminescence microscope is used to visualize internal structures of rock samples, ceramic … [Read more...]
Smart Lock and Door Security
A smart lock or smart lock is an electromechanical lock that can be unlocked or locked by input from an authorized device. These inputs are made through a wireless transmission protocol and a cryptographic key. A smart lock also monitors all accesses and can set automatic actions, such as sending notifications about problems to other devices. Smart locks are generally seen as a partial aspect of … [Read more...]
Arduino TDA7297 Audio Amplifier Module (for Doorbell)
Our Arduino project on doorbell is a great, simple project but if you followed that guide, you have probably noticed the volume of the sound that we are generating using a buzzer or speaker connected to an Arduino is not enough loud to be useful as a doorbell. That's why we need to slightly modify such projects and amplify the sound. TDA7297 amplifier module can be powered by 6-18V and is … [Read more...]
How to Develop Web Applications With Create React App
Often we need to create single-page web applications for various purposes, such as for our IoT projects or to create some server monitoring web page or just an informational web page for a GitHub repo. Many of us tend to use PHP, Ruby, and Python even to create simple apps. When we need just to create an informational web page for a GitHub repo, then we edit some HTML templates. These methods … [Read more...]
Learning Ruby : For Beginners
Ruby is a beautiful language which can be written like poems and it is difficult to run an exploit. In other words, Ruby is object-oriented, reflective, general-purpose, dynamic programming language which is secure. Julia, Swift, Rust etc newer languages like Ruby. Due to the initial lack of English documentation, the language spread mainly in the Japanese-speaking world, where it has since become … [Read more...]
Arduino LED Blinks with Pushbutton Pause
We have published several simple articles on Arduino, LED and pushbuttons. They are a great learning tool for the children, as well as great "templates" for the adults to start a new project. Here is a list of some of the old articles: Arduino 2 Push Button One LED: Switch On/Off Make Beep Sound in Arduino Project Upon Push Button Press Arduino Blink LED Rate Depending On Push Button … [Read more...]
What is RISC V Processor
RISC-V is an instruction set architecture (ISA) based on the design principle of the Reduced Instruction Set Computer (RISC). It is an open standard that is subject to the permissive BSD license. This means that RISC-V is not patented and can be used freely. Thus, anyone is allowed to design, manufacture, develop and sell RISC-V microprocessors (open source hardware). Numerous companies offer or … [Read more...]
When Will We Have CSS4?
CSS never had versions such as CSS v1.0, CSS v2.0, CSS v3.0 and so on. CSS is not a programing language. HTML and CSS are markup languages. In computer science, markup languages represent a class of languages specialized in enriching textual information. They use tags, syntactic units that delimit a sequence of characters or mark a precise position within a stream of characters (for example, a … [Read more...]
What Happened to Symbian OS and Nokia?
The Symbian mobile OS had its origins in Psion's 32-bit EPOC platform; this was used and further developed in a consortium founded in 1998 called Symbian by the mobile phone companies Ericsson, Motorola, Nokia and Psion. Later, other companies, such as Samsung, used the operating system for their mobile phones. Ten years later, Symbian Ltd. was completely taken over by Nokia and successively … [Read more...]
How to Add a Brand Logo and Blue Tick to Emails with BIMI
In recent times, Google is talking about Brand Indicators for Message Identification (BIMI), which includes adding an MX Record, a SPF Record, a DMARC Record, and a BIMI Record. Adding an MX Record, an SPF Record and a DMARC Record is free and we have discussed the technical part on our website in the past - How to add DKIM, SPF Record, DMARC Record. Activate the records, if you have already … [Read more...]