It is true that Arduino itself can analyse music input. But Arduino spectrum analyzer with MSGEQ7 IC makes the total thing professional grade. Problem is that, MSGEQ7 IC is not exactly cheap and for bigger displays multiple MSGEQ7 IC may be needed. Another problem of MSGEQ7 is less availability as real to use shield. In other words, most will have to buy MSGEQ7 IC as component. That is great but … [Read more...]
Archives for November 2017
Need of True Free Mobile Operating System For Freedom
The article's title possibly making many readers wondered - why Android is Open Source? Forget about Android. We still lack a complete true free mobile operating system which is really like mobile version of GNU/LINUX. It is a threat to data privacy. Near 100% GNU GPL with 100% Open Source hardware is ArduinoPhone 2.0, which is essentially like phones of the year 2000. Replicant Mobile Operating … [Read more...]
How To Install PostgreSQL on Ubuntu 16.04 LTS
Old readers can recall that we had guides for PostgreSQL with WordPress. New and old users can recall our recent guide on how to install MongoDB. PostgreSQL is time tested and often compared head to head with MongoDB. Here is how to install PostgreSQL on Ubuntu 16.04 LTS Server via SSH. In this article we will avoid the comparison but only discuss the steps to install, configure and secure … [Read more...]
How To Install RabbitMQ on Ubuntu 16.04 LTS
RabbitMQ is a message broker for the messaging protocols. RabbitMQ supports Advanced Message Queuing Protocol (AMQP). Message brokers in computer networks are software applications to communicate by exchanging formally-defined messages over protocols for the message-oriented middleware. Previously we talked about Apache Kafka, that is basically similar type of software. Here are the steps on how … [Read more...]
How to Install, Configure, Secure MongoDB on Ubuntu 16.04 LTS
MongoDB is a modern, lightweight, scalable NoSQL Database. MongoDB stores data as JSON-like documents and data structure can be changed over time. These are few points which makes MongoDB great choice for wider usage in data sciences to mobile application. Server with 512 MB RAM server is enough for basic testing purpose. Here is step by step guide on how to install, configure, secure MongoDB from … [Read more...]
Tips On Using Breadboard Wire and Wire Stripper
Commonly we suggest the hobbyists and newbies to use ready to use jumper wires or build custom size jumper wires with crimp pins. Ready to use jumper wires are great but has limitations at higher end. Here are practical tips on using breadboard wire and wire stripper. Good quality jumper wires with machined pins are actually good only for breadboard. You can not use them on any kind of prototyping … [Read more...]
Hortonworks Sandbox For Ready-Made Hadoop, Spark, Pig etc
Normal way of using Hadoop, Spark, Pig etc is to type the commands to install them. We have published numerous guides on each of them on this website to install via SSH. Second way is using some third party ready to use service where they are already installed, they are essentially like IBM's free Demo Cloud. Third way is to use some virtual appliance which has those preconfigured softwares so … [Read more...]
How to Develop a PHP MySQL Medical Diagnosis Application
In our previously published articles we talked about developing healthcare mobile app and later discussed about developing cognitive applications. Actually IBM's diagnostic softwares use are designed to meet all purposes, so those application's logical flow and amount of data becomes huge and complicated demanding application of machine learning. Diagnosis of basic matters can be based on simple … [Read more...]
Tips For Improving MySQL Database Performance
Be it WordPress like PHP-MySQL app or custom app, database can be bottleneck. Here are some tips for improving MySQL database performance. Definitely there are specialised text books to detailed documentation by MySQL, it is not always practical for all to read to lengthy texts, extract what are important points from them and apply. This kind guide is important for the webmaster and newbie … [Read more...]
Building Cognitive Applications with Data Science Experience
All of us are aware of dividing workload to the specialised persons. However, while developing free and open source applications and time to time smaller commercial applications, such division of specialized experience often gets blurred and one person handles all parts alone. Such use cases need better free tools (like IDE) to get kind of helping hand. Just a quick recapitulation of roles - … [Read more...]
Headless CMS, Decoupled CMS and Content as a Service (CaaS)
As importance of CMS is increasing when we are talking about RESTful API, Microservices and also using CMS in Application Development. Headless CMS, Decoupled CMS & Content as a Service (CaaS) are newer things and we guess this is a timely article for our readers. Many of these terminologies are quite ill-defined and commonly for practical purposes, for some use cases. Headless CMS, … [Read more...]