We know that shutter speed and aperture are important part of photography in manual mode. But, how to change shutter speed and aperture on DSLR? Depends on make of camera and lens. You need to rotate some wheel with and without pressing another button is the basic. We have included a graphical representation which can help you. How To Change Shutter Speed And Aperture on … [Read more...]
Archives for July 2017
Arduino Multifunction Shield (HCARDU0085) : Features
This is kind of review out of marketing research as ex-willing consumer. Initially I thought that it is Made in China and has lot of sensors. Arduino Multifunction Shield has 4 digit 7 segment led display, 4 SMD led, 10k potentiometer, 3 push buttons, buzzer and lot of interfaces. It is not Made in China, it is just a costly thing with very less features. $2 would be correct price for it. This is … [Read more...]
How To Install Apache NiFi On Ubuntu 16.04 LTS
The original project behind Apache NiFi was created by NSA! Of course it will be efficient in tracking and can have vulnerabilities, at least older than 1.3 versions had. Version 1.3.0 is latest at the time of publication of this guide. At present NSA has nothing to do with Apache NiFi and it has been another Big Data tool in Apache Software Foundation's collection. It can have vulnerabilities. … [Read more...]
List of Budget Saving Cheap Arduino Modules And Components
We know that many peoples from good families on this earth unfortunately on budget while there are different type os humans. Here is best list of budget saving cheap Arduino modules and components on web with which you can create useful projects and will not repent. Cheap Arduino Modules And Components : Forewords For Those Are At Budget For electronics, we talk about … [Read more...]
List Of Open Source Big Data Visualization Tools
We have noticed that there are some growing number of websites which write about Big Data, cloud computing and spread wrong information to sell some others paid things. They can not write guides like how to install Spark, Elastic Search, Kibana. Here is list of open source big data visualization tools which will convert data in to graphs, charts usable with tools like Spark, Hadoop. Do not use … [Read more...]
China Bicycle Speedometer Review
Possibly most families except the misfortunate have a bicycle. The "premium" China bicycle speedometers sells at $5 to $7 on Ebay, Amazon. Initial plan to develop a DIY speedometer with Arduino and TM1637 LED display dismissed as the unit costs lesser than half than DIY. Here is China bicycle speedometer review with infographics explaining functioning parts, pdf manual and how it really performs … [Read more...]
Bitcoin Mining Guide For Beginners
We talked about cryptocurrency virtual currency. Bitcoin is designed to be generated by hardware & software. Free money is not so easy. Here is Bitcoin Mining Guide For Beginners. Normally we "buy" Bitcoin but Bitcoin is highly secure for the transaction as Governmental spyware fails to track. The basic reason to generate, use Bitcoin sarcastically is not for making free money but for higher … [Read more...]
sqlmap Tutorial : WordPress SQL Injection Testing (White Hat)
We talked about SQL injection in older article. Here is a sqlmap tutorial for WordPress SQL injection testing for the beginners to test own website for potential vulnerabilities & fix them. This website and tutorial is intended for White Hat purposes only. Of course trying them upon others vulnerable WordPress installation will find the points and at the end it is possible to hack it. That is … [Read more...]
How To Install Apache Mesos With Marathon On Ubuntu 16.04 LTS
In a previously published article we introduced to multi cloud. In that article we gave example of managing SendGrid from WordPress dashboard using SendGrid WordPress plugin. Mesosphere is a software that expands the cluster management capabilities of Apache Mesos with additional components to manage server infrastructures. By combining several components with Mesos such as Marathon and Chronos, … [Read more...]
Convert Computer Power Supply To Breadboard Power Supply
All of us have, had died desktops with quite costly ATX, SFX power supply units. Those units are really great for powering DIY electronics compared to the cheap made in China circuits with AC mains to DC converter. The supplied power by a computer power supply would be stable. Here is how to convert computer power supply to breadboard power supply. How To Convert Computer Power Supply … [Read more...]
Breadboard Wiring Rules & Useful Hacks
It is not another article on breadboard wiring rules. Human who can read this webpage knows what is breadboard, breadboard power supply etc. Here are some extreme breadboard wiring rules & useful hacks to make the things easy for complicated circuits. Actually we are working with through hole technology components not SMD components, so 1960-70's various things work better. I will use least … [Read more...]