Powerful open source SQLite manager for Raspberry Pi

SQLite is a lightweight but powerful database management tool. It occupies a little space on the device – a bit more than 500KB, but offers most of the features that are implemented on other SQL database tools. SQLite is a serverless engine, meaning that the whole database is stored in a single file, and all transactions are reads and write from the file. There are no initial server configurations required – all you need is to create a .db file and start writing queries. This is why SQLite is preferred on small devices like mobile phones, embedded devices, and Raspberry Pi. Previously, we have installed an SQLite into Raspberry Pi, created database and table with only a few lines of script. We performed all the tasks from the command line tool. Eventually, you will want to have full control of the database and see the whole picture. Therefore, you should also consider installing SQLite manager, which brings a graphical user interface to work with SQL databases. To run the SQLite manager, you will need to work from the Raspberry Pi desktop. You may want to connect a monitor, or like me, use a VNC client to access the Raspberry Pi…

Continue reading

All Things IoT

Unless you’ve been living under a rock, you must have heard about IoT. But, do you know what exactly IoT is? In the simplest terms, IoT or Internet of Things refers to the network of connected devices that are capable of collecting and sharing data across the network. Over the past few years, IoT has grown in popularity and it’s believed that about 33 billion devices will be connected to IoT by 2020. But, we are not going to talk about why IoT is important or why it has grown in popularity. Rather, the focus of this article is IoT applications. So, let’s dive into a few applications of IoT by industry. Internet of Things Home Innovation Imagine a world where people’s homes could listen to them, talk to them and make decisions. In fact, this is already happening. Connected devices inside homes allow you to control your appliances like lights and HVAC with smartphones. There are more advanced options too, such as smart refrigerators. Have you heard of Amazon Alexa? It’s an IoT device capable of performing a variety of tasks such as calling an Uber, ordering items for you from Amazon.com and playing music.

Continue reading

How to Protect Your Business’s Computer Network

Your business needs a computer that is connected to a network, or in other words, the internet. Think, for a moment, about all of the benefits that you would obtain from doing this. You would be able to communicate with your clients, customers, and prospective employees daily. Not to mention, it allows you to have a presence on the world wide web, improving your credibility as a company. So, you decided to set up a computer network, but have you thought about what you need to do to protect it? To safeguard yourself against cybersecurity attacks and to keep your connection secure, you must adhere to the following steps. Monitor by installing a firewall A firewall is a software that people use to protect their private network security. It is precisely for this reason that it should be one of the first steps people take to safeguard their networks, which they must have turned private, to begin with. You don’t want unauthorized users to access your internet, right? That is why a firewall can act as a defense against this, as it can monitor and prevent security breaches at the same time.

Continue reading

Scale up Big Data mining with Hadoop machine learning tools

Each human or organization doing various activities are constantly generating massive amounts of data. In real life when you visit supermarkets, doctors, institutions, log into a bank account, visit webpages, spend time in social networks, buy online – you leave a footprint of data. The data of your past carries lots of interesting information about your human habits, interests, behavior patterns. If we scale up to organizations, where every process and decision play a significant role in business success, data becomes a valuable asset. Collected and properly mined historical data may help to make critical decisions for the future, optimize the structure and even see the trends where the business is heading. Hadoop machine learning tools Big Data is everywhere and, so storing analyzing it becomes a challenge. No human can handle and effectively analyze vast amounts of data. This is where machine learning and distributed storage comes in handy. Hadoop machine learning is an excellent concept of dealing with large amounts of data. The Apache-based Hadoop platform is based on open source tools and utilities that use a network of lots of computers to store and process large amounts of data more efficiently.   Hadoop machine learning is joined…

Continue reading

Must-Have Tech for Aspiring Music Producers

Music producers are often as talented as the artists they work with. They’re great at building and maintaining relationships; this might be through coaching and supporting the artists to ensure they are focused and motivated and can produce their best performances. Sometimes they need to be a diplomat as they try to keep both artist and record label happy when their creative visions conflict.  If you’re an aspiring music producer wanting to turn your dream into a reality, you need to make sure you’ve got the right technology.  Building a home recording studio doesn’t need to cost the earth; in fact, it’s often best to start with the essential items and expand/upgrade it up over time. Here’s the list of everything you’ll need to get started.

Continue reading

6 Important Camera Accessories Every Photographer Should Own

There is always one debate among photographers that photography isn’t about the gear, but it is about the person behind the camera. That’s true, but let’s face it: there are some camera accessories that you should have to aid your skills. Here we have listed down a few accessories that you should buy if you own a DSLR. #1 Tripod The relation between a camera and a tripod is inseparable. Tripods can help you in capturing photos where you require the help of another person. Moreover, they are also used in sports photography, astrophotography, and time-lapse videos as well as capturing long exposures. With a tripod, you will be able to achieve excellent stability and get correctly focused photos by avoiding the camera blur. #2 Extra Battery Imagine you are in long event photography and suddenly your camera shuts down. It is frustrating to stop taking photos in the middle of the event. Having extra batteries in your bag allows you to keep shooting, and in the meantime, you can also charge the drained one. There are many Online stores where you can buy spare batteries online at discounted prices. #3 External Flash Light The inbuilt flash camera might help…

Continue reading

ABCD method for screening skin cancer

To improve diagnostic accuracy, the  ABCD rule of lesion screening is widely used which is based on asymmetry (A), border (B), color (C), and differential structure (D) measuring. •         A total dermatoscopic value (TDV) results from the calculation TDV = A·1,3 + B·0,1 + C·0,5 + D·0,5 •         This score contributes to the differentiation between benign and malignant lesions:                                            1,00  –  4,75 – benign skin lesion                                            4,75  –  5,45 – suspicious                                            More than 5,45 – melanoma Asymmetry A – Asymmetry of Shape, Structure, and Color. The skin lesion is divided into four regions, and there is symmetry inspected across x or y-axis. If asymmetry is only by one axis, it gives 1 point and if on both axes there are 2 points calculated. So for shape, structure, and color, there can be 6 points maximum.

Continue reading