Previously, we published a simillar list named List of Python Libraries For Data Science & Machine Learning. Just to repeat the same sayings - knowing basics around Python is a need for development around Data Science. We guess, most of the readers already used with installing Jupyter and working with Jupyter. This article is not exclusively related to Jupyter Notebook but is very important … [Read more...]
Fields of Application of Big Data : Part I
The possibilities with regard to the networking on the Internet means that a lot of data exchange takes place between the devices. This exchange includes both structured and unstructured data. More efficient process design and profit maximization should now be the focus of most business-driven companies. In order to be able to position the company position and the specially developed products … [Read more...]
Cloud Infrastructure for Sensitive Workloads
Business-critical applications in sensitive industries are facing hurdles in the cloud. Cloud made the entire IT infrastructures possible to be configured with just a few clicks of the mouse, making the servers are immediately available, and when RAM, storage or computing power is scarce, the infrastructure can be easily readjusted and scaled. Virtual Locations aims to combine the benefits of the … [Read more...]
Control Multiple AC Appliances With One ESP32 Arduino
The result of this guide will be a local control panel with ESP32, pushbuttons, LED indicators, relays which can control the connected AC appliances by the simple pushbutton press. When connected to Wi-Fi, it will be able to control the thing over the internet with simple HTTP cURL commands. This guide and code can be used for home automation or creating smart power outlet. Single relay version of … [Read more...]
Edge Computing vs. Cloud Computing
Cloud computing happens in some centralized location with a huge resource in the pay-as-you-go model. Edge computing happens on the device itself. This comparison arises in this era of big data and IoT for different reasons. Edge computing is the data processing power at the edge of a network which is pushing the computing applications, data, and services away from the centralized nodes. A … [Read more...]
URL Format For Sending Commands Over HTTP (cURL) to IBM Watson IoT
HTTP commands open up wider way to control. This is the corrosponding GitHub repository with a basic example matched with this guide. Already we have shown the serious usages of the method through our Controlling AC Powered Appliances With ESP32 guide. Here is a Discussion on URL Format or Sending Commands Over HTTP (cURL) to IBM Watson IoT. IBM's platform is configured to accept events from … [Read more...]
ESP32 Arduino : Multiple MQTT Topic
It is possible to use a single ESP32 to handle multiple relays in your IoT project. We can use MQTT to subscribe or publish multiple topics. A good real-life deployable example of IoT controlled AC appliances is our guide on . In that project, we have two status indicator LEDs and one relay connect to the ESP32. We could control the AC appliance connected with the relay either by pressing a … [Read more...]
How to Control Multiple Relays With Single Arduino ESP32?
One regular reader of this website asked us how we can control multiple relays with single Arduino ESP32? This article will not give any direct answer. This is a theoretical article discussing how multiple channels on MQTT can be created so that we can separate matters like temperature and humidity from a DHT11 sensor. Normally we connect DHT11 with IBM Watson IoT in a raw manner. In our that … [Read more...]
ESP32 Arduino AC Motor Speed Control Module/Circuit
So far, we have shown how to control ON/OFF status of an AC powered appliance with IBM Watson IoT. That guide is important to use HTTP(S) POST request instead of using MQTT. HTTP POST and MQTT has difference of use-case. In this present article, we only restrict ourselves to discussions around ESP32 Arduino AC motor speed control module and circuit. Using an AC appliance for switch ON and … [Read more...]
What is Military-Grade Encryption in VPN Service
Military-grade encryption can be an unclear phrase if the users are not well aware of the basics behind the terminology and existing offerings. Encryption in a VPN is very important for privacy, security, anonymity. A basic encryption system for the VPN may easily be breached by any malicious attempt. Few of the VPN services increasingly using the phrase military-grade encryption. Readers may read … [Read more...]
How to Install OpenVPN on Cloud Server (Debian 10)
Reading our previous article on OpenVPN may be practical to many of the readers. You need to configure a non-root user with sudo privileges and ideally another server to certificate authority (CA). How to Create Own Certificate Authority (CA) With EasyRSA is a separate guide which is mandatory to read before proceeding with this guide. Also, try to follow our guide on Initial Cloud Server Setup … [Read more...]