In our previous article on using MAX7219 IC to build bigger display with LED, 7 segment segment LED, we talked about multiplexing. For future articles and guides on our website, it is important to know about multiplexing and charlieplexing. Multiplexing, Charlieplexing decreases pin count in a cluster of LEDs. Here is Basic Theory on Multiplexing vs. Charlieplexing & Arduino … [Read more...]
Archives for November 2017
Which Smartphone is Better to Buy in 2017-2018?
Unfortunately, the question, which smartphone is better to buy in 2017-2018, has not many options. Definite reason is Nokia is actually out of game. My one decade old Nokia N73ME still is a good hardware. If you need that quality of solid hardware, then obviously it is iPhone specially if you have MacBook Pro purchased around 2012 or later. Samsung is practically clone of iPhone and good at … [Read more...]
Fireworks Photography Settings For DSLR, Rangefinder
Photographing fireworks is one of the most challenging work specially when handheld and situation is adverse. Here is quick fireworks photography settings For DSLR, Rangefinder. For a prepared setup, you can use a good tripod, a shutter release control (or mobile application which serve the purpose) as accessories. In such cases it is possible to make fireworks dreamy. But for an unprepared … [Read more...]
Digital Wallets : Advantages and Disadvantages
Digital Wallets are not new, neither iOS, Android and LTE/4G powered mobile phones are newer. Newer is increasing penetration and various offers by many service providers forcing the users to use certain digital wallet. Knowing the basics, advantages and disadvantages of digital wallets possibly more than everyday's need for any level of user in this IT era. It is normal to thing about PayPal and … [Read more...]
Guide For Healthcare Mobile App Development on Cloud
When we are talking about Freedom, we are talking about Free Software and Open Source hardwares. Sadly, at present very few even single board computers are 100% philosophy of GNU compliant. Sadly, for unknown reasons, various Governmental healthcare sectors (which includes NHS) promote proprietary companies like Microsoft and their product like Microsoft Windows. It is good that they are promoting … [Read more...]
Facebook Analytics Cognitive Data Analysis : Jupyter Notebook & IBM Watson
For this guide we have to use IBM Bluemix. In our previous guides we talked about how to use Jupyter Notebook, IBM Data Science Experience software, How To Run Docker, Containers On IBM Bluemix, Jupyter Notebook on IBM Bluemix in old way, Python libraries for Data Science, a WordPress Plugin showing usage of Watson Tone Analyser, cognitive data analysis etc. These things are modern and often … [Read more...]
New IBM Cloud Private Software Based on Containers, Microservices and APIs
5 years bak, condition of IBM was not exactly in great condition around cloud. When IBM started Bluemix PaaS, Heroku like PaaS was more acceptable. It is practical fact, today with data sciences, big data, PaaS; IBM has lot of things to offer. Their major deficiencies was possibly understanding the need of the developers. IBM recently announced open source Grafeas project to help developers with … [Read more...]
Arduino MAX 7219 CNG Basic Circuit : LED, 7 Segment Displays
MAX 7219 and MAX 7221 quite commonly used display driver IC for LEDs. Actually the same IC was in the 8x8 LED Matrix display. Right now, we know about 7 segment LED display as electronic component and multiplexing (increasing the number of digital pins in Arduino). Here is how to create Arduino MAX 7219 CNG basic circuit to control LED, 7 Segment displays in own custom ways rather than using … [Read more...]
Social Impact of Big Data : Part 2
In first part of Social Impact of Big Data, we discussed about the sources from which data are collected. In this article on second part of social impact of big data, we will discuss about the commercial usages and applications of big data and big data analysis. From that previous article, it is obvious matter that caution should be exercised when processing, storing or generally using data … [Read more...]
How to Use Python on Arduino, Like to Blink LED?
We can directly use C++ on Arduino instead of using Arduino's default way. Also, we can code with C on Arduino. As readers possibly know - Arduino does not have any special language. But, How to Use Python on Arduino, For Tasks Like to Blink LED?. We need not to compile the Python scripts unlike C++ but simply run the Python scripts from Terminal/iTerm2. That is not exactly great, but kind of … [Read more...]
How to Manage Logfiles with Logrotate
In many guides on this website, we talked about log rotation. Logrotate is Linux utility for automatic rotation, compression, mailing log files etc jobs. Here is how to manage logfiles with logrotate. Many common programs automatically setup Logrotate. Like when we install Apache2, that adds a configuration file used by Logrotate to rotate all apache access and error logs/etc/logrotate.d/apache2. … [Read more...]