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…
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…
Introduction Conventional methods of displaying images or massage to public are using LCD display and dot-matrix LED displays. Propeller LED display is a special kind of device that project an image, text or time as if the images are floating in the air. Actually the floating images emerge by synchronizing LED’S blink to form an…
Introduction Kitchen timer is a device that can be used as a timer to disconnect any electrical device according to the time what the person can set as the connecting time of the electrical device. And normally it can be used for the kitchen items and that is why this device is named as “KITCHEN…
Contact Pubudu: pubuduaravinda90@gmail.com Introduction This project is base on mainly transport service section. In Sri Lanka there are many taxies. But there is no standard service charge for the journey. The service charge should base on length of journey and parking time. As solve of this I made the “taxi meter”. Through this service charge…
INTRODUCTION Overview Time is most important thing of our life. Everything is change with time. Nobody can stop or chapter it. We do something in our day to day life at time. The whole world created a method for represent time. We use watch to known the time. There are several types of watches. Watches,…
Introduction Persistence of Vision (POV) Wands is a way to create long light displays. The wand consists of a single row of LED’s controlled by an ATMEL 328 Micro controls. When the wand is turn on the Leds are lighting on randomly, but if you move it quickly left and right, you will see…
Introduction over view We have main three colors (Red, Blue & Green) which can produce a broad array of colors. They called as RGB colors. When mixing two or more of these primary colors, we can produce any colored:-red+green=yellow, blue+red=puple.RGB output devices are TV set of various technologies (CRT, LCD, PLASMA), Computer, mobile phone display…
Introduction Obstacle Avoider is a simple robot car that is moving an area by avoiding obstacles on its path. While it is moving forward it checks whether there is an obstacle on its path by using optical sensors on it and when it recognized an obstacle on its path, it is starting to turn left…
Introduction In the computer world “Scrolling” express the sliding text, images, videos or whatever the displayed in display/ monitor in vertically or horizontally. To do this job there are many devices using various technologies. In the very first the people used key board to work computers and also scroll the display. After it is make…