Internet

Description and explanation of different terminologies used in web and Internet.

What is a Virtual Private Network (VPN)?

This is a recap from our previously published articles to briefly describe Virtual Private Network (VPN) in easy langugage. Nowadays, VPN services for Windows are extremely popular. Many inexperienced users understand VPN as a magic key for accessing blocked web resources: they clicked the button, and the site opened. Yes, unblocking websites is one of the VPN functions, but not the most important … [Read more...]

HTTP vs MQTT for IoT Devices

Regular readers definitely noticed that in our IBM Watson IoT example codes for ESP32 Arduino, we have used both MQTT and HTTP. Also we talked about HTTP POST method. HTTP POST is easy, is not it? It is really easy to write code for Arduino to construct HTTP POST request. Because all of us more or less used with HTTP based API and cURL. It will appear that as MQTT is complex and HTTP is better to … [Read more...]

HTTP/3 : The Next Protocol After HTTP/2 and HTTP

The word HTTP/3 will astonish many as HTTP/2 yet not widely adapted (34% world adoption rate). HTTP/3 or HTTP-over-QUIC is the next protocol after HTTP/2 and HTTP 1. HTTP/3 will be a combination of SSL and TCP. HTTP/3 will use QUIC for transport. HTTP/3 will be the third major version of the Hypertext Transfer Protocol and based on previous RFC draft "Hypertext Transfer Protocol (HTTP) over QUIC". … [Read more...]

Visual Paradigm : A Tool to Create Illustration of Different Things

Visual Paradigm is a Nice Tool to Create Illustration of Different Things With Free Tier of Usage. You can create infographics, circuit diagram, flow charts, data visualization. Officially, it is an UML (Unified Modeling Language) CASE (Computer-aided software engineering) tool supporting UML 2, SysML and Business Process Modeling Notation (BPMN). There are several other such software, some of … [Read more...]

What is Zigbee? What Are the Differences Between LoRa and Zigbee

What is Zigbee? ZigBee is a personal-area network standard. ZigBee specification considered as an alternative to Wi-Fi and Bluetooth for some applications. Unlike LoRa and Wi-Fi, multiple central controllers can be used for Zigbee. Zigbee is the name of the specification of a set of high-level wireless communication protocols for use with low-power digital broadcasting, based on the IEEE 802.15.4 … [Read more...]

What is LoRa? What Are the Differences Between LoRa and WiFi

What is LoRa? What Are the Differences Between LoRa and WiFi? WiFi is limited in range, consume huge battery. LoRa is specially designed for the IoT devices. LoRa stands for Long Range. LoRa gives long-range transmissions of more than 10 km in rural areas with low power consumption. It is a patented wireless data communication technology developed in 2012. LoRa is a wireless communication standard … [Read more...]

Wearables and Internet of Things : Part IV

In the previous part of this series, we discussed about few of the use cases. This is the Forth Part of Wearables and Internet of Things Series. In this part, we have disccused about usage in production and logistics, field service. Production and logistics Due to its flexibility and sensorimotor capabilities, humans will remain an important part of production and … [Read more...]

IoT Prototyping : Pushover Ready to Use Android App for Push Notification

A button press sending a push message and email from ESP32 to Android is most wanted project. It is limited by people's abillity to develop Android app. I was finding an easy way for the readers. I re-discovered and tested Pushover with Node-RED on IBM Watson IoT platform. Within 15 minutues with minimum clicks I received beutiful push message from IBM Watson IoT platform with ESP32 HTTP POST on … [Read more...]

What is Network Time Protocol (NTP)

In a previous guide on ESP32, we faced NTP server and Network Time Protocol to get current time for button press event as example. What is Network Time Protocol (NTP)? The Network Time Protocol (NTP) is a standard for synchronizing clocks in computer systems using UDP protocol. NTP is specifically designed to provide reliable time information over variable packet delay networks. In common usage, … [Read more...]

5 Tips to Fully Leverage the Reach of SMS Marketing for Businesses

SMS is not outdated as many of the newcomer digital marketers think of it. However, not all text marketing campaigns are not the same. Some marketers use it as a standalone marketing strategy whereas some others integrate it into their business marketing strategy. According to a survey conducted by a leading mobile market research agency, about 89% of the mobile phone users tend to access SMS … [Read more...]

Sources of 4K Videos For Watching and Download

Many of the New 4K/UHD Television Owners Search For Sources of 4K Videos For Watching and Downloading. This article definitely a timely need to many of the readers. At this moment (December 2018) number of 4K videos available online not exactly less. Ultra-high-definition (UHD) includes both 4K UHD and 8K UHD. These two digital video formats has an aspect ratio of 16:9. UHDTV-1 is 3840 pixels x … [Read more...]