Arduino Weighing Machine Using Load Cell and HX711 Module

Although gravity is the weakest of the four fundamental forces that keep the universe from flying apart, it is the only one that we can directly perceive. Everything on the earth that has mass experiences it, as the force of gravity pulls it toward the iron core at the center of our planet. Weight and mass are connected by gravity. The world standard unit of measurement of weight is the kilogram (kg). Even in the USA, where imperial measurements of weight, distance, and volume are still in wide public use, those units are referenced to the metric SI system. So a pound (of weight) in the USA is not defined by another imperial.