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Multi-Purpose Wire-Loop Security System

This multi-purpose security system utilises wire loops to secure items. Wire loops can be employed in various ways for security applications such as luggage...

Building a Voice-Enabled ChatGPT Terminal with ESP32 and Google TTS

This project takes the ChatGPT terminal introduced in the November 2023 issue to the next level where it now speaks like a VoiceGPT. In...

Light Cum Room Freshener Module With Two Options

This light cum room freshener module offers two choices. In the first choice, the room freshener spray and a small LED light get activated...

Batteryless E-paper Display

As technology advances, various energy harvesting methods have emerged, leading to a new era of batteryless sensors. The batteryless E-paper display proposed here is...

A Smartwatch with Human Interface Built in?

Imagine a smartwatch whose display acts as an interface serving you both as a keyboard and a mouse! What if I tell you that...

Smallest Portable Mini Fridge

This Homemade Mini Fridge can work with any power bank and without using harmful CFC gases. Have you heard of a compact fridge that can...

Low-Cost Long-Range AirTag that Utilizes Wi-Fi Technology

Are you tired of losing your keys, bags, or other valuable belongings? Say goodbye to those worries with our step-by-step guide to creating your...

pH Measurement In Hydroponics System

The base setup for this system is located in a room with approximate dimensions of 9.29 square metre. The room is non-air conditioned and...

Adding Location Tracking To Your Wearable Device

Traditional GPS-based systems have limitations, especially indoors or in areas where signals are too weak or difficult to get due to obstructions. Can you...

Shop Billing System Using a Thermal Printer

This shop billing system is a comprehensive solution aimed at streamlining transaction management within a retail environment. Combining Python for graphical user interface (GUI)...

Gadget For Dual Protection From Viruses

The Corona pandemic is officially over but its ill effects are still being seen, especially in crowded places like popular markets and malls. Besides,...

Super Power Saving 24μA Sensor Node

When it comes to wearable devices and small sensor nodes, the lower the power consumption--the longer is their life. Given that most of these...

Smartwatch-based Login System for Multiple Devices & Online Payments

In today's digital age, security is paramount, especially when it comes to accessing personal devices and sensitive information. Traditional password-based authentication methods are susceptible...

Simple 2.5 Watt Audio Frequency Amplifier using AN7523

Here is a Simple Audio amplifier using a single IC AN7523. This amplifier gives an output power of 3 watts into an 8-ohm loudspeaker...

Meshtastic Network of Inexpensive LoRa Radios

Besides LoRa (acronym for long range) radios, there is another kind of radios that are already occupying the market segment with variety of applications,...

DIY Digital Dual Stopwatch

Consider this digital stopwatch with dual timers if you are seeking a dual stopwatch that allows you to measure two distinct time intervals. It...

RFID-Based Authentication System Using Arduino

The radio frequency identification (RFID) system used for the identification and tracking of objects makes use of an RFID reader and a tag. The...

‘Namaste’ Robot To Greet Visitors Automatically

This Namaste Robot, whose mechanical frame can be made of recycled materials, monitors people within its 100cm range using an ultrasonic module. Detecting anyone...
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