Aswinth Raj

How to Use Serial Bluetooth in ESP32

Bluetooth modules like HC-05 and HC-06 are easy to set-up and quick to use with Arduino IDE, but they have their own limitation...

Programming ESP32 Board with Arduino IDE

Note: This tutorial was written after Arduino has officially launched its support for ESP32 boards. So if you have followed the...

How to make an Electromagnetic Coil Gun

Coil Gun, as many people think (including me) is not just a fun toy with a tube and few coils around it which can shoot...

Smart Phone Controlled Arduino Mood Light with Alarm

I recently purchased the Neo Pixel LED strip and was quite impressed by the way it works. The tiny LED’s have an inbuilt driver...

What is Stepper Motor and How it Works

From a simple DVD player or printer in your home to a highly sophisticated CNC machine or Robotic Arm, Stepper motors are to be...

Interfacing nRF24L01 with Arduino: Controlling Servo Motor

While Internet of things (IoT), Industry 4.0, Machine to Machine communication etc are getting increasingly popular the need...

IR based Wireless Audio Transmitter and Receiver Circuit

Infrared is the most commonly used wireless data transfer medium for limited range, and we already covered about simple IR...

Raspberry Pi Based Jarvis themed Speaking Alarm Clock

“Good morning. It’s 7:00 a.m. The weather in Malibu is 72 degrees with scattered clouds. The surf conditions are fair with...

What is PWM: Pulse Width Modulation

Inverters, Converters, SMPS circuits and Speed controllers.... One thing that is common in all these circuits is that it...

Interfacing 3.5 inch Touch Screen TFT LCD with Raspberry Pi

Raspberry Pi is a Palm Size computer that comes in very handy when prototyping stuff that requires high computational power. It...