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What sensors do i need to use to measure density? [closed]

I want to measure the density of object and I need to get the volume and weight of the object. What sensors do I use to measure density?
-1
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1answer
833 views

how to measure length [closed]

I want to measure the number of meters of running cloth off of a fabric roll. So that when I press a button a motor spins a roll of cloth and the fabric is rolled onto a separate roll. I want to be ...
0
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1answer
311 views

Does RB URF02 ultra sonic sensor give false readings?

There's only 1 raspberry pi shop in my country and he offers only two ultra sonic sensors HC - SR04 and RB URF02 there's a pdf on the pages I linked to for more information. RB URF02 is so much more ...
1
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1answer
136 views

Mesure weight using force [closed]

Is it possible to use this force-sensitive resistor to measure weight between 10g-5kg(0,4oz-176oz)?