Articles by Dr. Abhishek Ghosh

Why They RX/TX LEDs Blinks Upon Code Uploading? How History of Terminal Relates to it? What Are RX/TX LEDs and Pins on Arduino Boards? History of old Terminal, Telegram and Broadcast engineering. Around 150 years back, we had only way to communicate is sending pulses of current. That was the starting of analog means of connection. Slowly, when telegram improved, terminal devices became faster … [Read more...]

Why we are going towards apparently easy tutorials on Arduino than couple of years back? These basic projects with components are helpful to learn using sensor based logic. Was not LCD with LDR was difficult project? Why Automatic LED Control Using LDR and Arduino looks simillar? Our older guides were mostly just using modules with libraries and this guide has more at the end for creating complex … [Read more...]

You definitely noticed that, for the same sensor, in some project we use Analog pin, but in some other project we use Digital pin. The analog pins on the Arduino can be used as digital outputs. There is another word or phrase - PWM. Pulse Width Modulation (PWM) is a method for getting analog results by digital means, like fading LED. Let us Discuss the Difference Between Analog and Digital Pins in … [Read more...]

It is Very Easy, Cheap and You Need Only One LDR, Resistor and LED. Here is Circuit Diagram and Schematic To Build Automatic LED Control Using LDR and Arduino Project. In previous guides on LDR, we created light measurement instrument and light meter. However, for Arduino Door Bell like project, to add more logic of sensing day and night, we need LDR like basic sensor. This guide is one foundation … [Read more...]