Tech Rumination by Anirudh Vempati

 If you're looking for a low-cost and easy way to add Wi-Fi capabilities to your projects, you might want to consider the NodeMCU ESP8266 board. The NodeMCU ESP8266 is a development board that combines the ESP8266 chip, a powerful microcontroller with built-in Wi-Fi, and a CP2102 USB-to-serial converter, which allows you to program and communicate with the board using a USB cable. The NodeMCU ESP8266 board comes with the NodeMCU firmware, which is a Lua-based environment (Lua is a lightweight programming language) that allows you to write and run code on the board without any additional tools. You can also program the NodeMCU ESP8266 board using the Arduino IDE, which gives you access to a large library of functions and examples. Alternatively, you can use MicroPython, which is a version of Python 3 optimized for microcontrollers. You can also connect sensors and actuators to the board using its GPIO (General-Purpose Input/Output) pins, which sup...

Tech Rumination by Anirudh White light is not just one colour but is made up of seven different colours: Red , Orange , Yellow , Green , Blue , Indigo , and Violet . We can remember this order using the acronym VIBGYOR . When white light passes through a prism , it splits into its seven component colours, and the range of colours obtained when dispersion takes place is called a spectrum . A real-life example of this phenomenon is the rainbow . After raining, there are water droplets in the sky which act as prisms . When sunlight passes through these droplets, the light disperses and forms a rainbow with the seven colours of the spectrum. Another example of dispersion can be seen on a Compact Disk (CD) . CDs are made up of a thin metal layer, usually made of aluminium, and a protective layer on top. When light hits the CD, it is reflected off the metal layer and scattered back to our eyes, creating a range of colours. Sir Isaac New...