Hi there,
I'm using a load cell (TAL220 10kg) and a HX711 with an Arduino to measure weight.
I'm using the "HX711.h" Arduino library to read the values.
Over time, the value drifts away and the device needs to be tare'd again. In my case, it drifts from 0.5 kg to 0.9 kg in a matter of minutes.
I need it to not drift - I assumed that a load cell worked in a way where I could tare it and let it run for weeks and still get an accurate weight (or at least a stable value).
Is the drift because of some software rounding thing in the library, or is it just not realistic to expect a load cell to not drift and it's simply not within the laws of physics on how they work?
I'm hoping it's software, otherwise it's back to the drawing board with my project (it needs to stay on all the time and detect water level).
I'm using a load cell (TAL220 10kg) and a HX711 with an Arduino to measure weight.
I'm using the "HX711.h" Arduino library to read the values.
Over time, the value drifts away and the device needs to be tare'd again. In my case, it drifts from 0.5 kg to 0.9 kg in a matter of minutes.
I need it to not drift - I assumed that a load cell worked in a way where I could tare it and let it run for weeks and still get an accurate weight (or at least a stable value).
Is the drift because of some software rounding thing in the library, or is it just not realistic to expect a load cell to not drift and it's simply not within the laws of physics on how they work?
I'm hoping it's software, otherwise it's back to the drawing board with my project (it needs to stay on all the time and detect water level).