Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Microcontroller

Design and Implementation of Electronic Board Advertisement Based on Microcontroller PIC16F887and Multi Character Button Keypad

Mousa Kadhim Wali; Qais Mohammed Ali Al-shakarchi; NabilKadhimAL- Shamma

Engineering and Technology Journal, 2013, Volume 31, Issue 1, Pages 66-77

Recently LED display panels are widely used throughout the world in all situations to create images for visual displays in a variety of applications including communication and visual display devices. LED array display board is a popular instrument for commercial usage. Many banks, shops and cinemas are willing to install one piece of it because of its versatility. LED array display board can be very bright and eye-catching. A display sign used for advertising or for displaying direction or other information to motorists has an important feature in common. This research provides an efficient and scalable approach to LED Dot Matrix displays. The system is comprised of a tricolor dot matrix display panel with an interface circuit to a computer. It also comprises an executive program that runs on the computer for the display control of characters, decorative pattern or messages. The display board shows any character entered from the host computer which is interfaced using USB to a microcontroller that initializes the led driver. The advantage of this research is that size of the display board can be increased row wise and column wise without making any changes in the circuitry since display board is the repetition of a small independent module.

Design and Implementation of Microcontroller Based Portable Drug Delivery System

Mohammed Sabah Jarjees

Engineering and Technology Journal, 2011, Volume 29, Issue 12, Pages 2580-2588

Portable drug delivery system or portable syringe pump system is a small infusion pump used to gradually deliver drugs, at low doses and at a constant or controllable rate of drug to a patient who needs to take a drug dose regularly in specific periods all the day. The aim of this research is to design and perform a prototype of a portable drug delivery system controlled by micro controller. The micro controller will control the dose of liquid or medication which will be given to the patient and the time of repetition of the dose. The dose rate will be adjusted by controlling the operation of stepper motor which will drive the syringe pump through fine mechanism set.

Microcontroller-Based Sun Path Tracking System

Nasir Ahmed Filfil; Deia Halboot Mohussen; Khamis A. Zidan

Engineering and Technology Journal, 2011, Volume 29, Issue 7, Pages 1345-1359

The objective of this paper is to design and construct a solar tracking system
based on a microcontroller. The system design depends on some mathematical
equations to send three signals to drive circuit to change the position of the solar
cell by changing the polarity of two motors. These mathematical equations are used
to compute the solar height angle (elevation) and the solar horizon angle (azimuth),
whereas the usage of the fixed solar cells does not accomplish the desired object,
that means the use of fixed solar cells does not grant a suitable output during a day
and a season, where the sun position differs at the morning to the noon and at the
setting of the sun, this is due to the spherical shape of Earth and to its rotation
around the sun.
The solar cell is controlled vertically and horizontally at period equal to one
hour, whereas the stored data that denote of the sun position is computed each hour
from the sunrise to the sunset, the amount of the stored data is different from a day
to another, this variation is produced by the difference of day length during the
year, whereas the amount of computed data at the summer is more than the amount
of computed data at the winter. The microcontrollers vouch for processing the data
and issue the commands to actuators to change the orientation of the solar cell. All
obtained results are very acceptable, when the system has tested in certain days. By
using the microcontroller, the project efficiency is improved, and the cost of
hardware is reduced.