Zener Diode Tester
This zener diode tester can be used to check zener diodes of 3.3V to 18V. The breakdown voltage of the unknown zener diode is...
Intruder Radio Alert System
Consider a situation where a burglar has entered your house and snapped the telephone wires, leaving you with no means of communication with the...
Crystal Based 50Hz Generator
Here is a simple crystal based 50Hz generator circuit that generates 50Hz frequency using a crystal. It produces alternating 50Hz pulses with 50 per...
Location using ESP8266 | Geolocation Without GPS Module
Yes it's possible to get the location with just our tiny little ESP8266 board. We don't need anything other then ESP board not even...
4x4x4 LED cube using AT89C2051
This 4x4x4 LED cube for use in science laboratories is very easy to assemble. Its LEDs light up in different patterns, creating mesmerising lighting...
Automatic Drip Irrigation System
Conventional irrigation method wastes a lot of water, leading to a high cost of electricity to run the pump set for irrigation. Automation can...
Voting Machine Using AVR Microcontroller
Polling by electronic voting machines (EVMs) has become a norm during elections. Unlike paper ballot systems, EVMs are safe and reliable as these rule...
Arduino Projects: Audio VU Meter
Presented here is an Arduino based audio meter that uses a liquid crystal display (LCD). A VU meter or standard volume indicator (SVI) is...
Designing an Eight-Bit Arithmetic Logic Unit Using ModelSim
This project describes the designing 8 bit ALU using Verilog programming language. It includes writing, compiling and simulating Verilog code in ModelSim on a...
Capturing Images with USB Camera, Wi-Fi and Raspberry Pi
Ever since this tiny, credit-card-sized computer, Raspberry Pi, appeared in the market, it has caught the imagination of every electronics and computer hobbyist around...
RFID based Attendance System
Most educational institutions' administrators are concerned about student irregular attendance. Truancies can affect student overall academic performance. The conventional method of taking attendance by...
XBee Interfacing With Raspberry Pi Model 2
XBee Pro (S2) module is an XBee ZB ZigBee Mesh Protocol based wireless transceiver designed by Digi International with an excellent range of 1.6...
Mini Offline UPS
Most of the systems are powered by AC mains. Uninterrupted power supply systems (UPSes) are there as a back-up to power the systems when...
Visual and Audible Monitor for Electronic Interfaces
Most of the modern PCs and embedded systems have digital interfaces as RS232, printer ports, LIN, etc. for exchanging of commands and data with...
Digital Soil Moisture Meter
A digital soil moisture meter is used for indicating the water content of a given soil sample. As crop production requires water at different...
Ultra-Low-Power Sensor Hub Using nRF24L01 Modules
Presented here is an ATmega328P microcontroller-based ultra low power sensor hub using nRF24L01+ radio frequency (RF) transceiver modules having transmitter and receiver units.
The transmitter...
Phone Broadcaster
Here is a simple yet very useful phone broadcaster circuit which can be used to eavesdrop on a telephone conversation. The circuit can also...
Smart Stick Using Arduino Uno: Aiding The Visually Impaired
Obstacle detection is one of the major concerns for a fully or a partially blind person (e.g. person suffering from night-blindness, cataracts, glaucoma, albinism...