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Beginners Projects

Automatic Light and Overcharging Control With Voltage-Level Indicator

This circuit can be used for automatic light control and 6V battery charging. It monitors the battery level and switches to charging and overcharging...

Bi-Directional Motor Driver Using ULN2803

Motor driver modules for motors allow you to control the working speed and direction of two motors simultaneously. Here we present an alternative ULN2803...

Optical Theremin Musical Instrument Using Arduino Uno Board

Theremin is an early electronic musical instrument controlled without physical contact by the thereminist (performer). It is named after the Russian inventor, Léon Theremin,...

Multimeter Test Leads from Scratch

If you are an electronics hobbyist and need to measure low currents and low voltages, you can buy any inexpensive multimeter. However, test leads...

Touch Switch

Described here a touch switch circuit system that operates only when you touch two conductor terminals simultaneously with your fingertip.

Curtain Opener

Open or close the curtains of your house at the press of a switch. All you need is this electronic curtain opener. Meant for...

Super Simple Intercom

This intercom circuit based on IC LM380 audio amplifier requires very few external components. So the circuit is very easy to assemble. Intercom circuit Circuit diagram...

Water Pump Controller

Here is a simple water pump controller circuit for controlling the water level in an overhead tank. The main components of this pump controller...

Simple Sensitive Remote Control Tester

This handy remote control tester circuit for testing infrared-based remote control transmitters used for TVs and VCRs etc. The circuit is built around 7805 IC,...

Dew-Point Sensor

A dew sensor is used in sensitive electronic equipment like cameras and copiers etc, to protect them from moisture failure by fast detection of...

Strain Meter

This strain meter shows whether the strain is compressive (reducing the length) or tensile (increasing the length) when an object such as a strut...

Linear Timer For General Use

This simple linear timer can be used to control any electrical appliance that needs to be switched off after a certain time, like a...

Laser Based Communication System

In this circuit, an electrical signal is transmitted from one place to another riding over the laser beam.

Object Detection Circuit using IR Sensor

There are various applications of IR sensors such as TV remote controllers, burglar alarms and object counters. Here we have used IR sensors (infrared...

Solar Battery Charging Indicator

Here is a battery charging indicator circuit of a simple charging monitor that indicates whether the storage battery of a solar power unit is...

Digitally Adjustable Dancing Lights

You might have come across several types of adjustable dancing lights (flickering LEDs). Most of them use presets (variable resistors) to adjust the rate...

Low-cost Stopwatch

Here is a simple circuit of a low-cost stopwatch that can count up to 99 seconds. The circuit uses CD4060, CD4013, CD4033, LTS543 and...

PC Power Manager

Very often we forget to switch off the connected peripherals like monitor, scanner and printer while switching off our PC. This leads to needless...
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