Hello.
I am searchng for a cheap sensor that can analog detect weight differences to do something like a scale. The weight range should be about 5 Kg max and about 0.250 min. I have searched for load cells but I have only found extremely expensive components so I have the suspect I am looking in the wrong direction. I am aware that in load cells the precision factor is almost constant so if the same cell can be used in a range of 1-10 Gr with a precision of 1/100 (I mean 0.01 g) the same cell measuring the range of 1-5 Kg the precision remain the same (or comparable). This is not a very influencing factor as it is most important to detect the weight vs time variation: I need to detect a weight variation in the order of less than 0.5 seconds and a continuous slow variation.
Any help will be appreciated. I know the principle but unfortunately in my past experience I have only worked with 10-1000 tons weight cells (always controlled by something like Arduino) and this is not the case.
Enrico
Update
Also a flexible sensor or force sensor can be useful to make this project. But also in this case I have not found reliable products, only (unreliable) flexysensors on baggood or from some small selles. I am searching flexible sensors (possible alternative) as well as load cells for cheap by a provider that can sell it as components. Not just kits, shields etc...
Message was updated by: Enrico Miglino
