Measuring Destructive Testing Force with a 20 Ton Hydraulic Press -- Episode 565

thanks!

Nice build Clem.

Due to vibrations the values can fluctuate. They way I do it is get an average measurement.
Instead of just taking one measurement and displaying that, the Arduino takes many measurements (10-100) in a set amount of time (use a for loop for that)
than you add all the values and divide by the number of measurements taken. the time between individual measurements and displaying it can be varied to compensate for different amounts of vibration.
in some cases its better to get a lot of values in a short time and sometimes just a few values over alonger period. its down to experimentation.

In my case I do the compensation with the mentioned method above and also round to full kg since any smaller units it would be meaningless to my experiments.
So all sub 1kg fluctuations are not displayed.

for your 100kg range load cell you can cut of anything below 0,1kg for example.

Awesome project!
I have a question though. I made a similar project with Arduino and a load cell ( 1 to 100 kg ) but it seems the value I am getting is fluctuating between 2 values or sometimes ...many values. I am trying to make a digital scale so I want one, and only one, value. Any idea how can I correct this?
Thank you in advance and keep up the good work!

this is the more current library:
github.com/.../u8g2

little update : since I filmed the video I have learned that there is a successor library to u8glib named U8g2 that supports even more displays ! so you migth want to use the more modern one if you replicate this project.