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eTechnophiles

eTechnophiles

  • Blog
  • Forum
  • Free Calculators
  • Pinouts
  • Raspberry Pi
  • Arduino
  • Books
  • About us

Ankit Negi

I am an electrical engineer by profession who loves to tinker with electronic devices and gadgets and have been doing so for over six years now. During this period, I have made many projects and helped thousands of students through my blog and YouTube videos. I am active on Linkedin.
Multiple Sensors with Arduino

How to Use Multiple Sensors with Arduino and LCD

Arduino Projects for Beginners

7 Great Arduino Projects for Beginners with Code in 2026

Operational Amplifier basics with 6 Circuit Examples

Operational Amplifier Basics with 6 Circuit Examples

How to change PWM frequency of Arduino Mega

How To Change PWM Frequency Of Arduino Mega

Making a DC Motor Speed Controller Circuit(50V, 15A)

DC Motor Speed Controller Circuit Using 555 Timer(50V, 15A)

Guide to LM35 sensor wiTH Arduino

How to Use LM35 with Arduino? In depth Tutorial

HCSR04 Ultrasonic sensor Working, Arduino Connections and Projects

HC-SR04 Ultrasonic Sensor Pinout, Working & Arduino Project

TOP 10 555 Timer based Projects for Beginners in 2018

10 Best 555 Timer Projects in 2026- Beginner to Advance

How IR sensor works?

Guide to IR Sensor- Pinout, Working & Arduino Project

Automated speed control of Motor using LDR with Arduino

Speed Control of Motor Using LDR with Arduino(Program & Circuit)

Automatic street light project using Arduino

Automatic Street Light Project Using LDR with Arduino

Rain Sensor using Transistor

Rain Sensor Alarm using Two Transistors and Buzzer

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