DEVELOPMENT OF A LOW-COST MICROCONTROLLER-BASED PUBLIC DIGITAL ASSISTANT

ABSTRACT This paper presents the development and implementation of a low-cost microcontroller-based public digital assistant that gives directions to visitors in a specified location within which it is programmed to operate. The system employs the use of several modules which include aWTV020SD-16P sound module which stores data in the form of sound, a speaker system that amplifies the sound, an HC-SR501 passive infrared (PIR)motion detector, a set of tact switches for input, and anILI 9340 graphical liquid crystal display (GLCD) screen, all of which are interfaced with a microcontroller equipped with a 32-bit Atmel ARM powered by a 9 V battery. The system was developed, implemented and found to perform optimally in accordance with the design specifications

Keywords: Digital Assistant, Sound Module, Tact Switches, GLCD Display, Microcontroller, PIR Sensor.