Arduino Projects: Fingerprint Door Unlock System
This simple fingerprint door unlock project using Arduino can be very useful for door security, forensics, crime investigation, personal identification, attendance system and much...
Sending Real-Time Sensor Data Through e-Mail
This project is based on Raspberry Pi and Python programming, and sends real time sensor data via Gmail. Raspberry Pi is a single-board computer...
Voice-Controlled Home Automation System
This is a project for a voice controlled home automation system to control appliances with your voice through an Android app. An Arduino Mega...
DTMF-Based Food Dispenser for Aquarium
Presented here is an Arduino-based automatic fish feeding system for an aquarium. Feeding the fish is a daily task, which can become a problem...
Wireless Biometric Lock Using Arduino With The IoT
If you’re still using traditional keyed locks, then you must be always worrying about losing the key or somebody breaking into your house. With...
Smart Touch Display Multi-Door Doorbell System
Technology is advancing daily and everything is turning smarter. A number of traditional devices that we used at our homes are becoming smarter now,...
Universal Dual-Channel Audio Signal Tracer And Tester
The circuit described here is a dual-channel audio signal tracer and tester. An audio signal tracer is a simple device to check the presence...
Control Up To 16 Appliances Without Microcontroller
Generally, the total number of appliances that can be controlled without using a microcontroller (MCU) is limited to three or four. One possible solution...
Make Video Streaming Camera with Raspberry Pi
Live streaming video cameras can be used for security or personal purposes. A variety of webcams, camcorders, DSLRs and mirrorless cameras for streaming live...
Adjustable AC Circuit Breaker
This circuit breaker employs a single operational amplifier (op-amp) and yet has a wide range and is user-friendly. A circuit breaker is an electrical...
Home Automation System Using A Wi-Fi Module
This home automation system can measure temperature, relative humidity, light intensity and control two electrical equipment on Cayenne IoT (Internet of Things) platform. The...
A Novel Architecture For Decimal Conversion In 8-Bit MCU
This article highlights common errors in 8-bit instruction sets, and introduces a novel architecture for decimal conversion instructions, especially in 8051, 8086, 8085 and...
Multipurpose Configurable Audio Buffer For Headphones
This article presents a simple, low-cost stereo headphones buffer using two LM358 operational amplifiers (op-amps). It is used to connect the headphones to line...
Control Panel For Submersible Monoblock Pumpset
Presented here is a submersible pump starter circuit using electronic overload relay, solid-state relay and adjustable startup delay.
A submersible pump is a type of...
Wireless Caller ID Display for Bikers
This simple telephone caller identification display can be very useful for bikers. While riding a bike or any two-wheeler, the cellphone is usually kept...
Music-Operated RGB LED
Here, RGB LED light intensity and colour change with the rhythm and volume of music. It is a great idea to have such a...
Noise Detector For Silence Zone Area
Please Keep Silence! You must have seen this message written in places like library and office. But some people intentionally or unintentionally tend to...
Accelerometer based Wireless 3D Air Mouse With Arduino
We have seen different types of Human Interface Devices (HIDs), for example mouse and keyboard. In older versions of computer mouse, optical sensors were...