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HomeEngineering Projects For YouMEGA COLLECTION OF ELECTRONICS DIY PROJECTS

MEGA COLLECTION OF ELECTRONICS DIY PROJECTS

Every week, we publish 2 to 3 projects, sometimes even more! They range from simple circuits for beginners, to advanced projects that you can use to develop complete innovative products! Most projects have been developed by enthusiasts like you. Some by experts. And, some by our team. Many are tested at EFY Labs, and some are not–but they typically have a proof-of-concept video.

Multiple Applications of High-Power LEDs

Nowadays, high-power light-emitting diodes (LEDs) LXHLMW1C are available in the market. These white LEDs contain indium-gallium-nitrogen (InGaN). The LEDs’ emitting capacity is 20 candela...

Pencell Charge Indicator

Small-size AA cells and button cells used in electronic devices providing a terminal voltage of 1.5V are normally rated at 500 mAh. As the...

9-Line Telephone Sharer

This 9-Line Telephone Sharer circuit is able to handle nine independent telephones (using a single telephone line pair) located at nine different locations, say,...

Audio Amplifier for Personal Stereo

In the output stages of most broadcast receivers and some amplifiers, there is a limit up to which maximum power can be developed without...

Solidstate Remote Control Switch

Here is a solidstate remote control switch which uses readily available electronic components. The control circuit comprises the transmitter and receiver sections. The range of...

Stabilised Power Supply with Short-Circuit Indication

Here is an efficient 4-stage stabilised power supply unit for testing electronic circuits. It provides well regulated and stabilised output, which is essential for...

Digital Stop Watch

Here’s a digital stop watch built around timer IC LM555 and 4-digit counter IC with multiplexed 7-segment output drivers (MM74C926). IC MM74C926 consists of a...

Under-/Over-Voltage Beep For Manual Stabiliser

Manual stabilisers are still popular because of their simple construction, low cost, and high reliability due to the absence of any relays while covering...

Watchman Watcher

Here is a circuit that can be used in offices, stores, warehouses, etc during night to check whether the watchman of your establishment is...

Low-Cost Electronic Quiz Table

Here is a simple, low-cost quiz table for four game participants. It determines the contestant who first presses the switch (S1 through S4) to...

Highway Alert Signal Lamp

Here is a signal lamp for safe highway driving. The lamp automatically emits brilliant tricolour light when a vehicle approaches the rear side of...

Doorbell-Controlled Porchlight

This add-on circuit automatically turns on your porchlight when your doorbell rings, so you can see the person ringing the doorbell at the doorstep....

Intercom with Musical Ringtone

Here’s a low-cost two-way intercom circuit with musical ringtone that can be made using readily available components (see Fig. 1). Melody generator IC UM66 (IC1)...

Ultra-Bright LED Lamp

This ultra-bright white LED lamp works on 230V AC with minimal power consumption. It can be used to illuminate VU meters, SWR meters, etc....

Mains Manager

Very often we forget to switch off the peripherals like monitor, scanner, and printer while switching off our PC. The problem is that there...

Solidstate Switch For DC-Operated Gadgets

This solid state DC switch can be assembled using just three transistors and some passive components. It can be used to switch on one...

Versatile CMOS/ TTL Logic and Clock Probe

For fault diagnosis of any logic circuit, you need a probe that can test the logic level or existence of clock activity. The circuit...

Electronic Scoring Game

You can play this game alone or with your friends. The circuit comprises a timer IC, two decade counters and a display driver along...
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