Embbeded Systems

Over the years, several security measures have been employed to combat the menace of insecurity of lives and property. This is done by preventing unauthorized entrance into buildings through entrance doors using conventional and electronic locks, discrete access code, and biometric methods such as the finger prints, thumb prints, the iris and facial recognition. In this paper, a prototyped door security system is designed to allow a privileged user to access a secure keyless door where valid smart card authentication guarantees an entry. The model consists of hardware module and software which provides a functionality to allow the door to be controlled through the authentication of smart card by the microcontroller unit.

This effort presents a developed attendance register module for a smart academic institution. A convenient test on four courses was carried out on the register module for courses A, B, C, and D for five lecture days. A total of twenty students were involved in the test. This module is a careful improvement of the previous SAMSYS module. Manual authentication of attendance of log books have become an arduous task and are also time consuming. The academic attendance policy has continually insisted on the 70/30 % benchmark which has also generated a lot of questions at various quarters. This improvement provides for instant print out of attendance after class lectures and after examination periods. In the design, the PIC18F462 microcontroller has been used to achieve adequate results. Also, the PIC16F88 was used for the keyboard decoder to convert scan codes to ASCII character for the microcontroller. Adequate attendance security measures have also been put in place for effective attendance management. The design presented here showed better performance over the previous design.

The lack in the music market of audio plugins multi-processor solutions that are customizable and accessible affect instrumentalists when they need to add or adapt resources, forcing them to attempt to replace or incorporate new equipment. The project Pedal Pi is an open-source software solution and embedded hardware that aims to fulfill the needs of the above points for instrumentalists beginners. It is presented in this article the project, its software architecture, a cost analysis, the development schedule of work and the results.



Resumo. A carência no mercado musical de soluções de multi-processadores de plugins de áudio acessíveis e customizáveis afeta instrumentistas quando necessitam agregar ou adaptar recursos, forçando-os a realizar a substituição ou incorporar novos equipamentos. O projeto Pedal Pi é uma solução de software open-source e hardware embarcado que visa atender os pontos supracitados para instrumentistas iniciantes. É apresentado neste artigo o projeto, sua arquitetura de software, uma análise de custo, o desenvolvimento do trabalho e os resultados obtidos.