A blog about my coding adventures
Introduction We can publish and subscribe messages on AWS IoT core by establishing a connection to it. There are multiple options available for publishing and subscribing messages with AWS IoT Core. The message broker supports the use of the MQTT protocol to publish and subscribe and the HTTPS protocol to publish. You can check this … Read more
Introduction Internet of things (IoT) is pretty ambiguous. Any phrase with the word “things” in it is inevitably somewhat ambiguous, right? IoT is a popular and rich topic and depending on the view there is a lot which falls under this term. However, in this post, we will keep it to its core, just a … Read more
Introduction NASA’s Perseverance Mars Rover landing was a historic moment. First time, we saw those moments of a rover landing on the Mars. That event was huge for many people watching this on their screens and it will inspire us for years. Every single image we saw after this landing contains a new surprise and … Read more
Its been a while that docker or container technologies are threatening the way we are delivering software. Cloud platforms are offering the capabilities which were only possible for the powerful and rich (ok, may be I could have written “were hard to get”). Networks, their administration and management are being abstracted away and the software … Read more
IoT devices are gaining popularity with every single day. The specialist hardware is becoming standardized and the specialized software is getting abstracted away with the ability to compose our applications using higher-level frameworks. One example of that device is ESP32 and in this post I will give a brief introduction to it. Though the demos … Read more
I like the light-weight programming model of Node.js. I also have great interest in IoT and I have written several posts on that topic as well. In this post, I am going to combine both i.e. IoT device with Node and you will see how natural this binding is. The Internet of things is filled … Read more
Continuing from my previous post on sensors, in this post, I will write about how to do analog-read from Arduino. We will use a photo-cell (also called photo-resistor, LDR etc) for our demo purposes. The photo cell detects the light level, We will use it to measure light intensity using an Analog Input (Arduino) and … Read more
In one of my previous post I briefly talked about sensors and their importance and usage in IoT scenarios. In this post I will write about different type of sensors, their capabilities and usage. Electronic components are discrete device that somehow modify the behavior of an electronic system. Sensors are simply systems of electronic components … Read more
I have previously written about device landscape and IoT. I also mentioned briefly Arduino in that post. I am not going to discuss its hardware architecture, and other theory behind it, more than it is needed. In the reference section you will find links you can check if you are new to arduino or want … Read more
Node RED is powerful, extensible, graphical programming environment. It’s a flow based modelling tool which make it easy to create event-driven applications in a simple & intuitive ways. Its built on top of NodeJS and provides a browser based editor for wiring flows together. Node RED development environment is actually a web page running on … Read more