pressure distribution scale

Community Projects
1

Hi,

I want to build a simple scale (30x30cm) where I can get the weight and the pressure distribution.

The functionality should be as:

If you place, for example, a book (1kg) and a mobile phone (500g) on ​​the scale next to each other, you should be able to read where the weight is on the scale.

The maximum weight will be around 50kg and the minimum weight 1kg

I therefore want to build a simplified version of the example in the video below:

https://www.youtube.com/watch?v=0uPZwMg … =MarcoReps

What I’m thinking of buying is:

Arduino UNO (MEGA328) rev 3

Amplifier for load cells HX711

4x of Load cell 50Kg

With the above parts, I can build a scale, what more component(s?) could I use to see the weight distribution on the scale?

Thanks.

2

In this video, he made a PCB. If you want to follow this thoroughly , you have to print a PCB. You will need soldering iron, solder lead etc. to solder the components.

3

You will need 4 amplifiers and 4 load cells and you will only get 4 points of data but with some math you could figure out roughly where on the “scale” a few items might be. You will not get a detailed picture like in the video.

4

With four sensors in 2D, you can estimate the total weight and position of the center of mass of the placed objects (three parameters).

The DIY pressure distribution sensor array in the video you linked contained hundreds of pressure sensors.