Arduino based Weighting Scale using Load Cell

Abstract

Embedded system is used in single task applications and it is important in process and control application such as temperature, pressure, flow, weight etc. This paper presents one such applications in which developed a model with objective of measurement and display weight. Electronic weighing machine uses load cell to measure the load or pressure produced by the load, here most load cells are follows the method of strain gauge, Which converts the pressure (force) into an electrical signal, these load cells have four strain gauges that are hooked up in a Wheatstone bridge formation. A load cell is a transducer that is used to create an electrical signal whose magnitude is directly proportional to the force being measured. HX711 is a precision 24-bit analog to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor. Arduino is a small microcontroller board with a USB plug to connect to the computer. Now a day precise measurement and storage of weight is one of the most important activities in industries. The measured weight is also displayed on an LCD screen.