DTMF DECODER

DTMF Dual Tone Multi Frequency, MT8870DE DTMF Decoder

DTMF Description: DTMF “Dual Tone Multi-Frequency”– In this tutorial, you will learn how to use the MT8870DE DTMF Decoder IC with any cell phone and control different electrical loads from anywhere around... Read more »
Sine wave generator

Sine Wave Generator using IC 741 OP AMP Operational Amplifier

Sine Wave Generator Description: Sine Wave Generator using IC 741 OP AMP Operational Amplifier- In this tutorial, you will learn how to make a stable Sine Wave Generator or Oscillator using IC... Read more »
salvage electronic parts

Salvage Electronic Parts #2: electronic components from Old Laptop Charger

Description: Salvage Electronic Parts from an Old Laptop Charger- So many useful electronic components can be salvaged from old electronic devices and machines. Today, we will see which useful electronic components can... Read more »
Audio Amplifier using 2SC5200

DIY One transistor Class A Audio Amplifier using 2SC5200

Description: DIY One transistor Class A Audio Amplifier using 2SC5200– In this tutorial you will learn how to make a single transistor Audio amplifier using 2SC5200 Transistor. This transistor is suitable for... Read more »
ESP32 Power Supply

ESP32 Power Supply PCB board, ESPRESSIF ESP32 Devkit WROOM

Description: ESP32 Power Supply PCB board- In my previous tutorial on the ESP32 Wifi + Bluetooth Module by the Espressif Systems, I explained the extreme basics including the pinout, Arduino IDE board... Read more »
Automatic Street Light

Automatic Street Light Control System using 555 Timer IC & LDR

Description: Automatic Street Light control system using 555 Timer IC- The Automatic street light control system is seriously an amazing project and no doubt this is one of my favorite projects. This... Read more »
555 Timer IC

555 Timer IC Working, Pin Diagram, Examples (Astable, Monostable, Bistable)

555 Timer IC Introduction: The 555 Timer IC is one of my favorite ICs. I have been using this timer IC for years in different electronics based projects, for generating pulses, delays,... Read more »
Reduce water bill

Reduce Water Bill & Electric Bill at Home, DIY project for Home

Description: Reduce Water Bill & Electric Bill at Home- In this tutorial you will learn the simplest method how to reduce the water usage, to reduce the Water Bill and Electric Bill... Read more »

LM317 Adjustable Regulator Power Supply Circuit calculator, Applications, & datasheet

LM317 Regulator, Description: LM317 Adjustable Regulator- In this tutorial, you will learn how to make an adjustable variable voltage power supply based on the LM317 regulator. This tutorial explains everything you need... Read more »
Salvage Stepper Motors

Salvage Stepper Motors and other useful parts from LaserJet Printer

Description: Salvage Stepper Motors and other useful parts from LaserJet Printer– This article is about how to salvage useful electronic components and parts from a LaserJet printer that can be used in... Read more »