I plan to create a dynamometer with a screen, an HX711 and a load cell and a sd card module.
I would like to print the peak value of my mechanical test on the screen linked to my Arduino by the press of a button.
Basically the test that I am doing is stretching a piece of fabric until it cracks, so the value of the mechanical effort, raise until a crack appears on the fabric, then the value decrease.
My idea would be to use the internal memory of the Arduino to store the higer value of the effort and to print it after the mechanical test, on a screen by the press of a button.
It sounds plausible enough. One thing to consider when choosing your components is how many pins you will need on the Uno to connect them all up. I don't see you having an issue in this case though.
I think you are using the wrong terms, a dynamometer, or "dyno" for short, is a device for measuring force, moment of force (torque), or power. For example, the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed. Tensile test machines, also known as tension test machines, are universal testing machines specially configured to evaluate the tensile strength of specimens. Our tensile testers will measure characteristics such as ultimate tensile strength, yield strength, elongation, and modulus. It sounds like you want to build a tensile strength machine, am I correct?
wildbill:
It sounds plausible enough. One thing to consider when choosing your components is how many pins you will need on the Uno to connect them all up. I don't see you having an issue in this case though.