Homemade Circuit Projects

Get free circuit help 24/7

  • 1000+ Circuits
  • Privacy Policy
  • About Us
  • Contact
  • Disclaimer
  • Videos – Circuit Test Results

Best Electronic Projects

An electronic project is basically a circuit project built using a handful of passive and active electronic parts by soldering them on a printed circuit broad or PCB.

Some of the best Electronic projects you can learn from this website are provided below:

New Posts

  • Simple FET Circuits and Projects
  • The Role of Inductor Coil in SMPS
  • Modifying XL4015 Buck Converter with an Adjustable Current Limiter
  • Variac Circuit for Controlling Large DC Shunt Motors
  • How an Autotransformer Works – How to Make



How to Kill Coronavirus with Ozone Gas Generator


Simple Thermal Scanner Circuit


Disinfecting Home using UVC Rays



Various Electronic Projects


Motor Magnet RPM Sensor with Hall Effect Sensor

Arduino Programming: Learn Arduino programming from the scratch. Basic Arduino coding tutorial and Arduino projects for all Arduino enthusiasts.

GSM Projects: Best GSM electronic projects for cars, vehicles, and home automation. Learn how to use GSM modules for controlling a desired application.


ARDUINO PROJECTS: It's a system in which the IC can be programmed to implement a set of specified electronic operations. Some very useful microcontroller automation projects with program codes can be found here.

IC 555 CIRCUITS: Easy to build IC 555 based circuits for leisure and fun. This device may look trivial and limited to hobby projects, but the fact is there hasn't been a single substitute for this IC in the past 40 years...

BATTERY CHARGER CIRCUITS: If circuit is the brain, battery is the heart of any gadget. But these devices need controlled charging and discharging. Simple to the most enhanced battery charger projects for home and industry.



50 Top Arduino DIY projects for students, engineers, professionals and manufacturers

POWER SUPPLY CIRCUITS: Fixed type and variable voltage and current power supply circuits are given here... best circuit projects suited for workbench testing.

AMPLIFIER PROJECTS: Projects to amplify small music inputs from ipod, cellphone or an SD card to get 100s of watts on loudspeaker. Boom your surrounding with the help of these projects.

AUTOMOBILE ELECTRONICS: Not satisfied with the default enhancements provided by your car manufacturer? No problems, these handy looking electronic projects can be used for enhancing your vehicles aesthetic looks even further.

STRING LIGHTS: Festive season is near, make these stunning lighting projects for your home and office. String lights, chaser lights, sequential lights, flashing lights, music lights...all under one roof.

LED PROJECTS: Fascinated with the power of LED lights? There's actually a lot more you can do with these simple DIY LED projects explained here.

ELECTRONIC PROJECTS: Electronic parts may look simple externally but internally they may be much more complex. Learn everything you wanted to know about these devices.

SEMICONDUCTOR THEORIES: Semiconductors are the soul of electronics. Learn their complex working through easy to understand projects.

TUTORIALS: Building electronic circuits can be impossible unless you have all the necessary tutorials in hand with you. Here's a great opportunity to learn and gain expertise.

FREE ENERGY CIRCUITS: Free energy projects may look controversial and unrealistic, but a few proven results do make them very intriguing...

HEATER CONTROL: Heaters demand huge power which require precise control for better efficiency. These projects accomplish the need perfectly.

HOME ELECTRICAL: It is actually possible to enhance your home with customized electronics. Electronic projects when integrated with home electrical can do wonders.

INDUSTRIAL PROJECTS: Today factories and industries are not just about heavy iron machinery, rather these are controlled with precise electronics. More such electronic circuit projects are shortlisted here.

4047 inverter prototype

INVERTER CIRCUITS: These projects will convert any high current DC to 220V AC. Learn from the scratch how to build these awesome power generating gadgets.

LASER CIRCUITS: Lasers are popularly used for disco lighting but did you know these can be also applied for security applications?

Voltmeter ammeter digital

METERS AND TESTERS: Although digital multimeters today is sufficient for most electronic troubleshooting, having a set of hand built testers can make the job even easier...

MOTOR CONTROL PROJECTS: Whether for home or industry, motors are indispensable. However, these require to be controlled for accuracy and power saving. More related projects can be found here.

SOLAR CONTROLLERS: Sun generates trillions of mega watts every second. Harnessing this gigantic power house into electricity can be implemented with some simple electronic concepts described here.

REMOTE CONTROL CIRCUITS: Controlling a device from distance remotely can be a lot of fun, which additionally saves the user's precious time and effort. A few cool projects presented here, are specially designed for the same.

simple adjustable IC 555 timer circuit with relay switching

Timer Projects: A small timer which can switch a load ON or OFF after a preset delay can be a very useful device for a specified application. Many such hand-picked delay timer projects can be read here.

Transmitter Circuits: Wireless communication system may sound complex to build, but actually it is the among the easiest projects a hobbyist can possibly try. Communicating remotely through a homemade walkie-Talkie can be extreme fun.

Water Level Controllers: Water is perhaps the most vital element on this planet for all living creatures. Controlling water not only prevents water spillage, it also helps to save this precious resource from getting unnecessarily wasted. Many related electronic projects for this are described here.

9 COOL LED CHASER CIRCUITS FOR DIWALI, CHRISTMAS DECORATIONS

Latest Comments

  1. Swagatam on How an Autotransformer Works – How to MakeJanuary 16, 2021

    Dear John, it may be possible if the MOSFETs, and the inductors are appropriately calculated, which seems difficult to confirm…

  2. Swagatam on Simple FET Circuits and ProjectsJanuary 16, 2021

    Hi, the supply is a single supply, and the input is an audio input not mains input, so your assumption…

  3. Swagatam on Lead Acid Battery Charger CircuitsJanuary 16, 2021

    Please send all the data, I'll pot it with your credentials

  4. Swagatam on Mini Hi-Fi 2 watt Amplifier CircuitJanuary 16, 2021

    I am not sure whether the amp can be upgraded to 200 watt simply by replacing the transistors. However, MOSFET…

  5. John Gile on How an Autotransformer Works – How to MakeJanuary 16, 2021

    Dear Swagatam, Would it be possible to have a circuit that uses the 60Hz 120v house power directly as an…

Useful Hand-Picked SMPS Circuits

Categories

3-Phase Power

Arduino 3 Phase Inverter Circuit with Code

50V 3-Phase BLDC Motor Driver

Compact 3-Phase IGBT Driver IC STGIPN3H60 – Datasheet, Pinout

3 phase Solar Submersible Pump Inverter Circuit

3 Phase Induction Motor Speed Controller Circuit

Transistor based 3 Phase Sine Wave Generator Circuit

324 IC Circuits

Prevent Amplifier Fuse from Blowing During Power Switch ON

Anti Spy RF Detector Circuit – Wireless Bug Detector

2 Simple Bidirectional Motor Controller Circuits Explored

5 KVA to 10 KVA Automatic Voltage Stabilizer – 220 Volts, 120 Volts

LM324 Quick Datasheet and Application Circuits

Multiple Battery Charger Circuit using Dump Capacitor

4017 IC Circuits

Converting Wasted Spark Ignition to Sequential Spark, for High Efficiency Combustion

Stepped Voltage Generator Circuit

Touch Dimmable LED Light Bar Circuit

Rotating LED Chakra Circuit for God Idols

UP DOWN Logic Sequence Controller Circuit

Understanding Amplifier Circuits

4060 IC Circuits

7 Simple Inverter Circuits you can Build at Home

How to Design a Flyback Converter – Comprehensive Tutorial

Timer Based Cell Phone Charger Circuit

Buzzer with Incrementing Beep Rate

Mains High Low Voltage Protection Circuit with Delay Monitor

Timer Controlled Submersible Pumpset Circuit

555 IC Circuits

IC 555 Oscillator, Alarm and Siren Circuits

10 Best Timer Circuits using IC 555

CMOS IC LMC555 Datasheet – Works with 1.5 V Supply

Motorcycle Button Start Locking Circuit

3 Simple DC Motor Speed Controller Circuits Explained

How to Make Simple Boost Converter Circuits

741 IC Circuits

Ice Warning Circuit for Automobiles

Comparator Circuits using IC 741, IC 311, IC 339

4 Simple Clap Switch Circuits [Tested]

Remote Control Tester Circuit

18650 2600mAh Battery Datasheet and Working

How to Make a Simple Milliohm Tester Circuit

Amplifiers

4 Efficient PWM Amplifier Circuits Explained

Make this Bass Booster Speaker Box

100 Watt Guitar Amplifier Circuit

Soft-Start Power Supply for Amplifier Loudspeakers

100 to 160 watt Power Amplifier Circuit using a Single IC OPA541

Mini Audio Amplifier Circuits

Arduino Engineering Projects

Arduino 2-Step Programmable Timer Circuit

Ultrasonic Fuel Level Indicator Circuit

Types of Arduino Boards with Specifications

Cellphone Controlled Dog Feeder Circuit

Learning Basic Arduino Programming – Tutorial for the Newcomers

50 Best Arduino Projects for Final Year Engineering Students

Audio Projects

Electronic Drum Sound Simulator Circuits

Make this Bass Booster Speaker Box

Audio Delay Line Circuit – For Echo, Reverb Effects

Touch Volume Control Circuit

Making a Center Speaker Box C80 for Surround Sound Systems

100 to 160 watt Power Amplifier Circuit using a Single IC OPA541

Battery Chargers

LiFePO4 Battery Charging/Discharging Specifications, Advantages Explained

Series 2S, 5S Li-Ion Cell Charger using BQ7718

Ni-Cd Low Battery Monitor Circuit using Lambda Diode

Using MOSFET Body Diodes to Charge Battery in Inverters

Precise Battery Capacity Tester Circuit – Backup Time Tester

Simple Ni-Cd Battery Charger Circuits Explored

Car and Motorcycle

Converting Wasted Spark Ignition to Sequential Spark, for High Efficiency Combustion

Automobile Engine RPM Servicing Meter Circuit – Analogue Tachometer

3-Pin Solid-State Car Turn Indicator Flasher Circuit – Transistorized

4 Solid-State Car Alternator Regulator Circuits Explored

Automotive LED Driver Circuits – Design Analysis

Car Warning Tone Generator for Ignition, Headlight, Turn Lights

Datasheets

Modifying XL4015 Buck Converter with an Adjustable Current Limiter

IC 723 Voltage Regulator – Working, Application Circuit

LDR Circuits and Working Principle

Triacs – Working and Application Circuits

Comparator Datasheet Parameters

TL494 Datasheet, Pinout, Application Circuits

Decorative Lighting (Diwali, Christmas)

Xenon Strobe Light Control Circuit

Musical Christmas Decoration Light Circuit

“WELCOME” LED Display Circuit

Switching Two Alternate Loads ON/OFF with IC 555

Fish Aquarium Oxygen Generator Circuit

8 Function Christmas Light Circuit

DIY LED Projects

Ceiling LED Lamp Driver Circuit

Touch Dimmable LED Light Bar Circuit

Rotating LED Chakra Circuit for God Idols

LED Obstruction Light Circuit

Wireless Music Level Indicator Circuit

3 Best Joule Thief Circuits

Electronic Components

Basic Electronic Circuits Explained – Beginner’s Guide to Electronics

Unijunction Transistor (UJT) – Comprehensive Tutorial

Zener Diode Circuits, Characteristics, Calculations

3 Terminal Fixed Voltage Regulators – Working and Application Circuits

Optocouplers – Working, Characteristics, Interfacing, Application Circuits

Schottky Diodes – Working, Characteristics, Application

Electronic Devices and Circuit Theory

Understanding MOSFET Safe Operating Area or SOA

Understanding MOSFET Avalanche Rating, Testing and Protection

What is IGBT: Working, Switching Characteristics, SOA, Gate Resistor, Formulas

Diac – Working and Application Circuits

Unijunction Transistor (UJT) – Comprehensive Tutorial

Solid State Relay (SSR) Circuit using MOSFETs

Electronics Tutorial

What is IGBT: Working, Switching Characteristics, SOA, Gate Resistor, Formulas

LiFePO4 Battery Charging/Discharging Specifications, Advantages Explained

Basic Electronic Circuits Explained – Beginner’s Guide to Electronics

Simple Triac Phase Control Circuits Explored

How RC Circuits Work

Unijunction Transistor (UJT) – Comprehensive Tutorial

Fish Aquarium

Fish Aquarium Oxygen Generator Circuit

Remote Controlled Fish Feeder Circuit – Solenoid Controlled

3 Automatic Fish Aquarium Light Optimizer Circuits

Aquarium Fish Feeder Timer Controller Circuit

Fishing YoYo Stop-Motion Switch Circuit with Indicator

Free Energy

Making a Self-Powered Generator

Free Energy from Inverter with Amazing Overunity

8X Overunity from Joule Thief – Proven Design

Charging Battery with Piezo Mat Circuit

Installing Regenerative Breaking System in Automobiles

How to Generate Electricity from Piezo

Games

Sound Triggered Halloween Eyes Project – “Don’t Wake the Devil”

2 Simple Fastest Finger First Circuits Explained

GSM Projects

Cellphone Controlled Dog Feeder Circuit

SMS Based Water Supply Alert System

SMS Based Pump Controller with Automatic Dry Run Shut Off

GSM Car Ignition and Central Lock Circuit Using Arduino

GSM Pump Motor Controller Circuit using Arduino

SMS Based Laser Security Circuit

Health Related

Ultrasonic Hand Sanitizer Circuit

Face Mask with UVC Disinfected Fresh Air

Digital Thermometer Circuit – Uses a Solar Cell for Power

Bluetooth Stethoscope Circuit

How Contactless Infrared Thermometers Work – How to Make One

Automatic Hand Sanitizer Circuit – Fully Contactless

Heater Controllers

Using Microwave Oven Parts to build a Soldering Iron Heat Controller

Induction Heater for Labs and Shops

How to Design an Induction Heater Circuit

Free Energy from Induction Cooktop

Arduino Temperature Controlled DC Fan Circuits

Kiln Temperature Controller Circuit

Home Electrical Circuits

Push-Button Light Dimmer Circuit

Prevent Relay Arcing using RC Snubber Circuits

110 V to 310 V Converter Circuit

Neon Lamps – Working and Application Circuits

Ultrasonic Pest Repellent Circuit

How to Repair Mosquito Swatter Bats

Incubator Related

Incubator Using Arduino with Automatic Temperature and Humidity control

Emergency Incubator Heater Circuit with Battery Charger

Incubator Reverse Forward Motor Controller Circuit

Temperature Controller Circuit for Reptile Racks

How to Make an Incubator Timer Optimizer Circuit

How to Build a Simple Egg Incubator Thermostat Circuit

Industrial Electronics

Simple Line Follower Vehicle Circuit using Op Amps

Simple Triac Phase Control Circuits Explored

SCR Applications Circuits

Bidirectional Switch

Solid State Contactor Circuit for Motor Pumps

Corona Effect Generator

Infrared (IR)

How Contactless Infrared Thermometers Work – How to Make One

PIR Burglar Alarm Circuit

Fiber Optic Circuit – Transmitter and Receiver

Photodiode, Phototransistor – Working and Application Circuits

4 Simple Motion Detector Circuits using PIR

Remote Control Tester Circuit

Inverter Circuits

Class-D Sinewave Inverter Circuit

Simple Online UPS Circuit

Easy H-Bridge MOSFET Driver Module for Inverters and Motors

50 Watt Sine Wave UPS Circuit

500 Watt Inverter Circuit with Battery Charger

How to Calculate Ferrite Core Transformers

Laser Projects

Vehicle Speed Detector Circuit for Traffic Police

3 Smart Laser Alarm Protection Circuits

Intruder Position Indicator Security Circuit

SMS Based Laser Security Circuit

Material Storage Level Controller Circuit

Laser Activated GSM Call Alert Security Circuit

LM317/LM338

18650 2600mAh Battery Datasheet and Working

3 Solid-State Single IC 220V Adjustable Power Supply Circuits

0-60V LM317HV Variable Power Supply Circuit

LM317 with Outboard Current Boost Circuit

Designing a Customized Battery Charger Circuit

Adjustable 3V, 5V, 6V, 9V,12V,15V Dual Power Supply Circuit

LM3915 IC

LM3915 IC Datasheet, Pinout, Application Circuits

Alcohol Detector Meter Circuit using MQ-3 Sensor Module

Wireless Music Level Indicator Circuit

10 LED Tachometer Circuit

Simple Tea Coffee Vending Machine Circuit

Battery Backup Time Indicator Circuit

Meters and Testers

Match Transistor Pairs Quickly using this Circuit

5 Digit Frequency Counter Circuit

Stud Finder Circuit – Find Hidden Metals Inside Walls

3 Useful Logic Probe Circuits Explored

Simple Frequency Meter Circuits – Analogue Designs

Digital Thermometer Circuit – Uses a Solar Cell for Power

Mini Projects

Simple FET Circuits and Projects

Basic Electronic Circuits Explained – Beginner’s Guide to Electronics

Making a Center Speaker Box C80 for Surround Sound Systems

LM10 Op Amp Application Circuits – Works with 1.1 V

Mini Audio Amplifier Circuits

Low-Dropout 5V, 12V Regulator Circuits using Transistors

Motor Controller

Variac Circuit for Controlling Large DC Shunt Motors

Easy H-Bridge MOSFET Driver Module for Inverters and Motors

Adjustable Drill Machine Speed Controller Circuit

Automatic Door Circuit using PIR – Touchless Door

Constant Torque Motor Speed Controller Circuit

2 Simple Bidirectional Motor Controller Circuits Explored

MPPT

Single LM317 based MPPT Simulator Circuit

Connecting MPPT with Solar Inverter

Best 3 MPPT Solar Charge Controller Circuits for Efficient Battery Charging

MPPT vs Solar Tracker – Differences Explored

I/V Tracker Circuit for Solar MPPT Applications

Understanding MPPT Solar Charger

Oscillator Circuits

Sine-Cosine Waveform Generator Circuit

10 Simple Unijunction Transistor (UJT) Circuits Explained

1 Hz to 1 MHz Frequency Reference Generator Circuit

Simple Circuits using IC 7400 NAND Gates

IC 555 Oscillator, Alarm and Siren Circuits

Understanding Crystal Oscillator Circuits

PIR (Passive Infrared)

How Contactless Infrared Thermometers Work – How to Make One

4 Simple Motion Detector Circuits using PIR

PIR Sensor Datasheet, Pinout Specifications, Working

PIR Solar Home Lighting Circuit

PIR Triggered Message Player Circuit

Detecting Static Human with PIR

Power Electronics

Modifying XL4015 Buck Converter with an Adjustable Current Limiter

Bidirectional Switch

How Transformers Work

How to Calculate Ferrite Core Transformers

How to Design a Flyback Converter – Comprehensive Tutorial

How to Make Simple Boost Converter Circuits

Power Supply Circuits

How an Autotransformer Works – How to Make

How IC LM337 Works: Datasheet, Application Circuits

Soft-Start Power Supply for Amplifier Loudspeakers

50 Watt Sine Wave UPS Circuit

Low-Dropout 5V, 12V Regulator Circuits using Transistors

110 V to 310 V Converter Circuit

Radio Circuits

Listen to UHF and SHF (GHz) Bands with this Simple Circuit

Make a Walkie Talkie Circuit using FM Radio

Make this Radio Repeater Circuit at Home

Make this Crystal Radio Set Circuit using No Batteries

Simple FM Radio Circuit Using a Single Transistor

Simplest AM Radio Circuit

Remote Control

Remote Control using Mains Power Line Communication

Remote Control Tester Circuit

Make this IR Remote Control Range Extender Circuit

2.4 GHz 10 Channel Remote Control Switch

Controlling LED Strip Light ON/OFF and Brightness with any Remote Control

Remote Controlled Solar Lamp Intensity Controller Circuit

Security and Alarm

Body Hum Sensor Alarm Circuit

Ultrasonic Fire Alarm Circuit using Air Turbulence Detection

Loop-Alarm Circuits – Closed-Loop, Parallel-Loop, Series/Parallel-Loop

PIR Burglar Alarm Circuit

Touch Operated Code Lock Switch Circuit

Gadgets to Protect Women from Assaults and Harassment

Sensors and Detectors

Motion Detector Circuit using Doppler Effect

Precision Current Sensing and Monitoring Circuit using IC NCS21xR

How Contactless Infrared Thermometers Work – How to Make One

Photodiode, Phototransistor – Working and Application Circuits

LDR Circuits and Working Principle

How to Wire a MQ-135 Gas Sensor Module Correctly

SG3525 IC

SG3525 Full Bridge Inverter Circuit

3 High Power SG3525 Pure Sinewave Inverter Circuits

SG 3525 Automatic PWM Voltage Regulation Circuit

Understanding SG3525 IC Pinouts

Simple Circuits

Loop-Alarm Circuits – Closed-Loop, Parallel-Loop, Series/Parallel-Loop

Simple Touch Operated Potentiometer Circuit

10 Simple Unijunction Transistor (UJT) Circuits Explained

Simple Ni-Cd Battery Charger Circuits Explored

2 Simple Fastest Finger First Circuits Explained

Simple Circuit Tester Probe – PCB Fault-Finder

SMPS

The Role of Inductor Coil in SMPS

Modifying XL4015 Buck Converter with an Adjustable Current Limiter

Ceiling LED Lamp Driver Circuit

High Power DC to DC Converter Circuit – 12 V to 30 V Variable

How to Calculate Ferrite Core Transformers

How to Design a Flyback Converter – Comprehensive Tutorial

Solar Controllers

How to Make Dye-Sensitized Solar Cell or Solar Cell from Fruit Tea

Solar Charge Controller for 100 Ah Battery

How to Make a Solar Cell from a Transistor

PIR Solar Home Lighting Circuit

Designing a Powerful 48V 3KW Electric Vehicle

3 phase Solar Submersible Pump Inverter Circuit

Timer and Delay Relay

Arduino 2-Step Programmable Timer Circuit

Simple Digital Timer Circuit with 2 Digit Display

Simple Kitchen Timer Circuit – Egg Timer

LCD 220V Mains Timer Circuit – Plug and Play Timer

Timer Based Cell Phone Charger Circuit

Timer Controlled Fitness Gym Application Circuit

TL494 IC

TL494 Datasheet, Pinout, Application Circuits

Motionless Electromagnetic Generator ( MEG )

PWM Solar Battery Charger Circuit

PWM Inverter Using IC TL494 Circuit

How to Make Ultrasonic Directive Speaker Circuit

Transformerless Power Supply

3 Solid-State Single IC 220V Adjustable Power Supply Circuits

1.5V Power Supply Circuit for Wall Clock

Transformerless Relay Driver Stage

0-300V Adjustable MOSFET Transformerless Power Supply Circuit

MJE13005 Compact 220V Power Supply Circuit

High Current Transformerless Power Supply Circuit

Transmitter Circuits

Mini Transceiver Circuit

Fiber Optic Circuit – Transmitter and Receiver

27 MHz Transmitter Circuit – 10 Km Range

GSM Car Ignition and Central Lock Circuit Using Arduino

LiFi Internet Transmitter Circuit – USB Signal Transfer through LED

Make a Walkie Talkie Circuit using FM Radio

Ultrasonic Projects

Ultrasonic Fire Alarm Circuit using Air Turbulence Detection

6 Best Ultrasonic Circuit Projects for Hobbyists and Engineers

Ultrasonic Pest Repellent Circuit

Ultrasonic Fuel Level Indicator Circuit

Ultrasonic Wireless Water Level Indicator – Solar Powered

Car Reverse Parking Sensor Circuit with Alarm

Water Level Controller

Pressure Switch Water Pump Controller Circuit

Ultrasonic Wireless Water Level Indicator – Solar Powered

SMS Based Water Supply Alert System

Simple Digital Water Flow Meter Circuit using Arduino

Anti-Corrosion Probes for Water Level Controller

Car Tank Water Sensor Circuit

Primary Sidebar

© 2021 · Swagatam Innovations

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.Ok