Tech Rumination by Anirudh Vempati

Have you ever wondered why, even though our bodies can conduct electricity, we can't be part of a small LED circuit? Firstly, it's true that our bodies can conduct electricity because they contain lots of water and salts, which are good conductors. However, for an LED circuit to work properly, it needs a very specific amount of electricity. Our bodies cannot control how much electricity they conduct, so if we were part of an LED circuit, we might let through too much or too little electricity. This could either break the circuit or not let the LED light up. Our bodies have resistance, which means they resist the flow of electricity to some extent. This resistance is actually good for us because it protects us from getting hurt by small amounts of electricity. So, while we can conduct electricity, we're not suited to be part of an LED circuit like a copper wire would be. It's important to always be safe around electricity! So, while our bodies can conduct electricity, th...

 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  A photoresistor is a type of resistor that reacts to light, also known as an LDR ( Light Dependent Resistor ). The resistance of a photoresistor decreases with an increase in light, which means it allows more current to flow. Let's make a circuit with a photoresistor. First, we need to create a simple circuit with an LED ( Light Emitting Diode ), a 1.5V battery , a few wires, and a switch. To do this, follow this sequence: connect the battery's positive terminal to a wire, then connect the wire to the switch, and another wire to the LED 's long pin. Next, connect the LED 's short pin to the battery's negative terminal . Now turn on the switch. Is the light glowing? If the LED glows, then the circuit is correct. Now, replace the switch with an LDR . Make sure the circuit is correct and that there are no polarities to an LDR . With everything in place, turn on the lights in your room. Is...