Abstract: In this research paper, an instrumental solution for detecting an object of irregular shape and then controlling the coloration of irregular shape leather on its surface area, is presented. Consumers and related businesses have always had a significant need for leather-based items, and equipment for accurate shaping of naturally obtained leathers have always been in high demand. Industrial resources available in Bangladesh with the goal of precisely detecting and shaping random-size and-shape leather sheets confront great problems in the handcrafting technique, which readily leads to poor quality of consumer-end leather products being created for export.To overcome this challenge, a prototype of an instrument is described that, at first, detects an irregularly or randomly shaped leather sheet using equally distant IR sensors positioned across a conveyer belt operated by a regulated DC motor. Second, it feeds the sensor data to a controller built on the Arduino Uno platform, which calculates the surface area of the detected piece of leather sheet. The controller gradually measures the unit length and width of the sheet on the belt, gradually perceiving and quantifying the full surface area. The prototype's design method was validated when the experimentally acquired results were compared to reference model data. The Programmable Logic Controller is used for detecting the presence of Leather and controlling the coloration on the surface of irregular shape leather.