Tuesday, December 7, 2021
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Editor's Choice

Collection of best articles on this website selected by the editors at EFY.

Crystal radio prototype

The Forgotten Crystal Radio – Revisited

You may be wondering about this article on a crystal radio in an era of digital broadcasting and digital audio. Crystal radios were quite popular and played an important role in...

Make A Crystal-Locked FM Transmitter

The circuit presented here uses a crystal oscillator and frequency multiplier to generate a highly-stable carrier signal frequency of 96MHz. With 40mW of RF output, it can be used to transmit...

Growing Electronic Components Directly On Semiconductors

Researchers indicate that growing electronic components directly onto a semiconductor eliminates the problem of electron scattering. Faster computers require more device density on chip. As a result, the devices have to be...
UV Sanitizing Chamber

Low-Cost Corona Sanitising Chamber

Staying safe and disinfected these days is one of the major issues.The chances of spreading the virus through touch has high probability in daily life. Therefore, we need an equipment that...
multi-doorbell system

Build a Smart Touch-Controlled Multi-Doorbell System

Technology is advancing daily and everything is turning smarter. A number of traditional devices that we use in our homes are becoming smarter now, including doorbells that are evolving with new...

Make Your Own ESP8266-12E/F Module Programmer

This article describes a method for making an ESP8266-12E/F module programmer and also discusses the support circuitry required for real-time applications. NodeMCU board is a development kit that consists of ESP8266 Wi-Fi-enabled...

LDR Plus GSM Based Security System

We all use safe boxes or drawers to keep our necessary belongings but sometimes aren’t sure how secure it is. We worry about what if someone breaks the lock and opens...

Make A Smart Presentation IR Pointer Using Arduino

Smart presentation pointers are readily available in the market but are expensive. Here is a simple, easy-to-build, inexpensive and infrared (IR)-based smart slide pointer using Arduino Leonardo. Slide presentations using PowerPoint can...

CC3D Open Pilot Qav250 Racing Drone

Due to very high speed in small packages, the racing drones are very expensive starting from 25k to 70K and it becomes the question of affordability for those who are new...

Contactless IR Thermometer For COVID-19 Detection

Due to the break out of COVID-19, we need to check our body temperature wherever we go -  from hospitals to airports - to detect any symptoms of the disease. Since...
 
 
 

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