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Controlling Adruino devices using MQTT

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(The above picture displays two LEDs and temperature capture. However, the code is for three LEDs, temperature and light intensity feed) Today was the second week of IOT class, in which we were supposed to interact with MQTT server by subscribing to the users and their messages and pushing the message to MQTT broker to control the devices connected to Arduino device. The MQTT is an MQ Telemetry Transport,  providing easy communication between many IoT nodes. The central piece is a broker, which connects to the various nodes which can subscribe to topics. In our experiment, we connected the Arduino device to MQTT broker using the Arduino Ethernet sheet and Ethernet cable to connect to the internet. For this, a sample code to establish this connection is being downloaded from the internet. This code we extended to control the three LEDs (which could be any devices) and two inputs devices, one temperature sensor to capture room temperature and LDR to capture the light intensit
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Business Strategy or just Mainframe Migration?

As many of IT veterans, I started my career as mainframe programmer in 1998. As from Electrical Engg background, I equally loved and hated my job, loved her salary part and hated her job nature. This is similar to when one is getting married with rich girl (which I am not actually J) and one don’t like her (not true in my case J). Eventually with time one gets used to situation and start liking your wife. Similar happened with my job, for first two years don’t have any clue what I am doing, why and what benefit a person sitting across the continent is getting to pay me handsomely. Gradually mainframe technology started making sense and then next 10 years or so flies away in executing projects, handling teams, customer site travels and so on till the time the shock came.  I opened a pdf document to read a joined case study conducted by organization and Gartner on future of mainframe technology. It was predicated that mainframe will get sunset in next 10 years, based on which organiz
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Hello Mr. Docker!!!! In which Container?

Containers are every where, oil containers, water containers, milk containers and used in all the industries. If you talk about container with a cargo industry expert, he will imagine container as a shipment container transported via ship, truck, and trains, handled via cranes. Similar with Information Technology Architect or professionals, we know what container means and it’s existing from last 16+ years or so in IT industry. The question is, today why everyone is talking about containers in IT world. What has changed? What sudden self-interest does everyone see in container, which was lying dormant in thick IT manuals from last many years? May sound little exaggeration, but I will relate this to what Mr. Albert Einstein did to scientific interest of common people, his contribution and associated success introduced and popularized science to masses in quick span of time. Before Einstein, there were significant scientific contributions from eminent people, still the right timin
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