Arduino Based Digital Capacitance Meter: An Interrupt Based Approach
Capacitive sensors are widely used to measure various physical and chemical process parameters such as displacement, acceleration, thickness, force, pressure, stress, level and humidity....
How to Play with Pancake Vibration Motors
Nowadays numerous electronic devices make use of vibrotactile feedback to increase user interaction with the help of suitable haptic feedback hardware like the eccentric...
Auto-reversible DC Motor with Speed and Rotation Control
DC motors are widely used in different machines, mechanisms and motion controls in manufacturing and processing industries. In these machines, it is often required...
Ethernet Interface for Automation Systems
Communication with remotely located automation systems is possible via the Internet. A physical communication port with a network is required for this communication. An...
Computerized Universal Timer
This simple and flexible timer is more accurate than the real-time clock of the computer used for the purpose. It can be used in...
Duck Hunt Game Using Arduino And Python
Duck hunt game is a shooting game based on pygame, using Arduino and an accelerometer sensor. In this project a gun pointer is made...
Automatic School Bell
Consider that a school has a total of eight periods with a lunch break after the fourth period. Each period is 45 minutes long,...
Water Level Controller-Cum-Motor Protector
Many a time we forget to switch off the motor pushing water into the overhead tank (OHT) in our households. As a result, water...
Long Range FM Transmitter
Several circuits for constructing FM transmitter have been published in EFY. The power output of most of these circuits were very low because no...
PC Based Timer
Timers are very useful both for industrial applications and household appliances. Here is a PC based timer that can be used for controlling the...
Secured Room Access System
Security is a prime concern in our day-to-day life. And access control system forms a vital link in a security chain. The microcontroller based...
Cellphone Operated Land Rover
Conventionally, wireless-controlled robots use RF circuits,which have the drawbacks of limited working range, limited frequency range and limited control. Use of a mobile phone...
Pressure Sensors on Railway Tracks
Every year thousands of animals die after being hit by trains. Animals on train tracks are dangerous for both animals and the train as...
Simple Event Counter
Microcontroller based miniscule event counter presented here is based on the inexpensive Digispark Attiny development board. One advantage of this design is that any...
FM Booster
An antenna amplifier boosts a radio signal considerably for devices that receive radio waves. Many devices have an RF amplifier stage in their circuitry, that...
Dual-Channel Active AC Analog Probe
Presented here is a low-cost, dual-channel, active AC analog probe. It is suitable for oscilloscopes, multimeters and other analogue measurement equipment.
When experimenting with AM...
IoT Based Notification System Using Android App
Presented here is a smart notification system for a door sensor, motion detector, fire alarm and doorbell using Raspberry Pi (RPi) and Pushover app....
DC-AC SSR Switch for Microcontroller/Robotic Projects
SSR stands for Solid State Relay. SSRs are not very different in operation from traditional electromagnetic relays that have movable contacts. An electromagnetic relay...