Turbidity/Coloury meter

Introduction What is turbidity? Turbidity is an optical characteristic or property of a liquid, which in general terms describes the clarity, or haziness of the liquid.Turbidity is the measure of the amount of un-dissolved suspended particles that present in liquid, which are generally invisible to naked eye.The turbidity meter is used to measure amount of…

TIC TAC TOE

Introduction The objective of this mini-project is to develop a portable electronic tic tac toe board capable of playing with one player and a microcontroller or two players. Coming up with an algorithm and necessary hardware that would encourage players to play tic tac toe is critical. The finished product will be very user friendly…

Reflectometer

Introduction What is reflectance? Reflectance is a property of a surface which is equal to the proportion of incident light which it reflects or scatters. It describe about the surface’s nature. That is whether it is a rough or smooth one or it is a dark or light one. Reflectance is a very important fact…

Motion detecting twilight LED lamp

Introduction Motion detecting twilight LED lamp is design to turn ON & OFF the light in a room with the use of motion sensor. When a person go through the door inside to the room he or she may forgot to turn off the light when leaving the room. This happens very frequently in our…

Line Following Car

Introduction The line following car is a car that follows a black line on white surface. The idea to make a line following car is inspired when I saw some video clips of line following cars. The basic concept of the line following car is that the line is detected using optical sensors and according…

LED stroboscope

Introduction Stroboscope instruments are used for inspection and observation of moving parts by freezing or slowing down the action of an object. If a fast rotating or oscillating object is illuminated with periodic light flashes so they always hit it in the same position, the object will appear stationery in the eyes of the observer.…

Kitchen Timer

Introduction The project which is going to be introduced here is a Kitchen Timer which can be used with many of our day to day activities. A timer is a specialized type of clock. A timer can be used to control the sequence of an event or process. When the set period expires some timers…

IR remote controlled AC relays

Introduction Infrared (IR) remote controls are everywhere. Just about every piece of electronic equipment you can think of has one TVs, DVDs, hi-fi systems.Even the latest cameras have them!. This project is a 3 channel infrared (IR) remote controlled relay driver with power saving.  It works with 12-bit SIRC IR signals as used by Sony…

Data logging hygro-meter

Introduction  Overview Relative humidity and temperature are essential components of a comfortable working environment. However, there can be some conflict between the needs of people and the requirements for the care of collections. Other thing is that the sensor is very small and it can measure the temperature and relative humidity anyplace (e.g. Internal temperature…

LED notice board

INTRODUCTION LED  display  notice board  is  an  economical  solution  for  displaying  messages  with  various  changing  effects.  It  is  applicable  in  shops,  restaurants,  pharmacies  and  etc . These notice boards can be made in large led panels or led dot matrix displays. They are in mono color , bi color and multi color. Power consuming of…