The model of categorization was based on physical property of the object, colour, relatively to white light. This document explains the design and development of robotic arm capable of sorting objects. Adoption of robot that can be used by agro processing industries for separation of impurities from food grains (like rice and beans) will go a long way in assuring high sorting accuracy, consumption safety, production efficiency and low cost of production. Robotics system is being used by packaging industries for product sorting and high sorting accuracy has so far been observed. So, system that can guarantee high level sorting accuracy is of high demand. Though during processing of food products like grains in agro processing industries, complex sorting machines are used, total separation of impurities is still not guaranteed. Research shows that one of the factors responsible for high death rates in Africa is poor supply of impurity free food products (especially grains like rice and beans). In Nigeria for example, crude death rate is 12.9 deaths per 1,000 people, meaning that around 2.1 million people die annually. Death rates in Africa countries are of high magnitudes. Though on global scale, life expectancy has increased and death rate is declining, poor countries, mainly in Africa, record life expectance of 55 years or less.
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