Arduino-based Line Frequency Meter Based on Reciprocal Counting
Precise measurement of line signal frequency is very important in many applications, especially in the management of power grid systems. Tasks like calibration of...
Surveillance Camera Using RaspiCam And Android App
This project describes how to build a surveillance camera based on Raspberry Pi (Raspi) that records HD video only when something moves in the...
Configurable DC-to-DC Converter Module Using Three ICs
Most kits with embedded microcontrollers (MCUs) operate off a single power supply (VCC) source like 5V or 3.3V. But for some experiments you need...
Make Your Controllers For Any Game Using Arduino: DIY
Nowadays, we have lots of game controllers that are improving the gaming experience over the years. There are number of factors responsible for a game...
Weight Machine
Eight years back I purchased a small bathroom scale from @Home ,Mumbai and it cost me a good amount of money then. It's a...
Wireless Control Of Servo Motor
I made my first robot when I was in college and always thought to make totally wireless. So the same I thought about making...
HV Generator for Microcontroller Projects
To drive small neon lamps or similar devices in your microcontroller/robotic projects, you need a high-voltage dc power supply for consistent and fast performance....
Simple Low-Cost And Versatile Battery Charger
Presented here is a versatile battery charger circuit to charge batteries ranging from 6V through 48V. At home, garage or laboratory, you may have...
Variable Power Supply with Digital Control
The most frequently used device in electronic workshops and laboratories is a universal power supply that provides a variable, fluctuation-free output. Here we present...
Arduino Based Windows PC Volume Remote Control
Presented here is a project that turns your Arduino into a remote control. Infrared (IR) remotes have been very prominent since 1980’s. In today’s...
Temperature Control & Indicator System
Here is an easy-to-construct temperature indicator-cum-controller that can be interfaced with a heater’s coil to maintain the ambient room temperature. The temperature control system is...
Mobile Sniffer
This mobile sniffer circuit can detect the use of a GSM mobile in mobile-phone-restricted areas such as examination halls and other ‘do not disturb’...
Cellphone-Based Remote Controller for Water Pump
Inconvenience in switching on a water pump installed in a remote farm is a common problem faced by farmers. Many circuits have been developed...
Time-Controlled Switch Using PIC16F72
A time controlled switch is an automatic timer switch that turns an appliance ‘on’ for the desired time duration. After the preset time duration,...
RF Controlled Aircraft
Presented here is a RF controlled aircraft project based on Arduino and 433MHz RF modules controlling a brushless DC motor and three servo motors....
Automatic Temperature Controlled Fan
Here is a circuit through which the speed of a fan can be linearly controlled automatically, depending on the room temperature. This temperature controlled...
Simple Two Way Amplifier For Microphone And Guitars
A self-made audio power amplifier for a guitar or violin should be simple, low-cost and reliable. It is good to have two separate loudspeakers...
Ultrasonic Distance Meter Using Raspberry Pi 2
Ultrasonic ranging module HC-SR04 provides 2cm to 400cm non-contact distance measurement range. Its accuracy can reach ±3mm with a cycle period of 50ms, which...