Previously, we talked about Nokia 5110 wiring details. Here is circuit diagram and code to play Nokia 5110 Arduino Snake Game. This Snake is like original Nokia Mobile's famous Snake II game. Nokia 5110 is a versatile LCD display and capable to perform almost everything. The basic problem is inconsistent quality of these Nokia 5110 LCDs - these are refurbished from 2 decade old thrown away mobile … [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 Are Mechanical Keyboards?
Have you heard of recent time craziness around the mechanical keyboards or though what are these mechanical keyboards? Mechanical keyboard keys are spring activated switches. We commonly use full travel membrane based keyboards for desktop keyboards and scissor switch keyboards for notebook computers. Mechanical keyboards are old fashioned, costly and feels somewhat closer to the old mechanical … [Read more...]
IBM Analytics Demo Cloud : Free Hadoop, Ambari With SSH
Normally we install Apache Hadoop and other big data tools on our servers. IBM Analytics Demo Cloud is intended to learn Hadoop, Ambari, BigSQL free of cost with SSH access & web console. With various cloud offerings many things these days have a free usage tier like we shown with unrelated things - Heroku and OpenShift PaaS. Here is how to get started with non-root access to this system. In … [Read more...]
Raspberry Pi Car PC System : List of Needed Hardwares
Previously we talked about DIN slot in Raspberry Pi Car Starter Guide and OBD II. Here is a list of hardwares needed to build Raspberry Pi Car PC System on ordinary old cars & a budget within $200 or so. You can use Orange Pi instead of Raspberry Pi, we talked about the single board computers in a separate article. The old illustration is possibly helpful : Raspberry Pi Car PC … [Read more...]
Docker Tutorial For Beginners : Part 3
In this series, first part of guide was on how to install Docker and use commands, second part was installation of some UI to visually check what is going on. In Part 3 of Docker Tutorial For Beginners, we will learn basics about Docker File, Port, Containers, Environment, Registry and Tag. Normally if we write a Python application, we install a Python runtime on the machine. But, with Docker, we … [Read more...]
Digital Vernier Calipers For Dummies
China is a country which manufacture and supply things at a cost which make precise, costly dirt cheap. Vernier Calipers is nothing new, all who had science in Twelfth Grade could use a vernier calipers. Needless to state that, most high schools made the interesting instrument a bitter topic by asking odd questions. Whether students of non-science can use the traditional analogue instrument that … [Read more...]
Rotary Encoder For Dummies : For Arduino, Raspberry Pi
Some theory better to know before buying rotary encoders. Here is rotary encoder for dummies guide intended for Arduino, Raspberry Pi users. Rotary encoders are like potentiometers but potentiometers do not have full rotation without limits unlike encoders. Rotary encoders output reflected binary code (RBC) (also known as Gray code) to inform how much, in which direction the encoder has been … [Read more...]
Docker Tutorial For Beginners : Part 2 (Using a Management UI)
In Docker Tutorial For Beginners Part 1 guide, we wrote how to get started. Next step, possibly for all kind of users is having a management UI to monitor, visualize what are running. Indeed, only for WordPress, it is difficult to manage only from command line interface. We will go in to much details around docker from Part 3 of this series. Docker Tutorial For Beginners Part 2 is about using a … [Read more...]
Install Apache Mahout : Ubuntu 16.04 For Machine Learning Dev
Apache Mahout is a simple programming environment and also a framework for building algorithms for Scala, Apache Spark, H2O, Apache Flink and so on. Samsara is part of Mahout, an experimentation environment with R like syntax. Here is how to install Apache Mahout on Ubuntu 16.04 for machine learning development. This guide will show commands to give the correct idea not exact commands to copy … [Read more...]
Docker Tutorial For Beginners : Part 1
Many users face issues to get started with Docker. Here is Docker tutorial for beginners. Containers provide a service oriented easy design. Current trend is to use Virtual Machines to run software applications. That is traditional virtualisation. Inside Virtual Machines applications run inside guest Operating System with virtual BIOS, virtual hardware powered by the server’s host OS and of course … [Read more...]
How To Install lighttpd PHP5-FPM (LLMP CentOS 7)
lighttpd is not production ready and CentOS is better os over Ubuntu or Debian. It is very difficult to make lighttpd running on Ubuntu 16.04. We are using PHP 5.4 not PHP 7.1. We are writing the guide because one person requested us out of errors. Here is how to install lighttpd PHP5-FPM on CentOS. By default supplied configuration files are not closest to usable to run WordPress like common … [Read more...]