RANCANG BANGUN SISTEM OTOMASI PEMBERIAN LABEL TANDA TANGGAL KEDALUARSA (EXPIRED DATE) BERBASIS MIKROKONTROLER AT89S51

Abstract

It had been made of the planning and realization of labeling expired date system based on AT89S51 microcontroller. This device can be used to giving a label of expired date to foods and beverages product, additive product, pharmacy and drug, etc. This system contents of hardware and software. The hardware consists of LDR circuit, relay circuit driver, minimum system of AT89S5 microcontroller and DC motor 24V. The assembly software was made from Reads 51 compiler. Based on that circuit, microcontroller automatically done labeling by moved the solenoid on main head label. LDR light sensor will detect incoming light intention on it is surface. The signal from sensor gained by BC107 transistor circuit so could move relay as a switch from AT89S51 microcontroller input. This research is produce software that can control the conveyor condition and label, the result of this labeling can be seen in the box that has labeled.