sorry, that's what I meant.Hi,
the HX711 does not convert to weight.
It converts an analog value into a digital value.
But there are some parameters that have influence on conversion factor.
Better show the schematic and the code.
Klaus
Okay, I understand.for a 5Kg load, the loadcell will output 1mV per volt of applied voltage. In other words, if you have a 10 volt excitation, your loadcell will output 5mV. As Klaus points out, HX711 simply coverts this voltage to a digital number.
Hello,do you use the bare HX711?
Or do you use a HX711 module? If so, you need to tell this .. and give a link to the module´s datasheet.
-->You need to read about basic operation of a strain gauge:
It´s output not only depends on the mechanical force, it also depends on the input voltage.
Currently we don´t know the input voltage, thus we can´t calculate it´s output voltage.
--> you need to read about HX711 operation.
It´s dgital output not only depends on the input voltage, it also depends on the gain (amplifier) setup.
If you using the typical application circuit of the HX711 datasheet, then the strain gauge supply voltage depends on R1 and R2. We don´t know what you use, thus we now have two unknown items. It makes it impossible to give you the expected answer.
Klaus
It's on page 4 of the data sheet:Hi barry,
do you know the formula for calculating the voltage from the load cell (mV) to the output data of the HX711 module based on the measurements I did above?
thank you
Hi KlausST,Hi
This is not what i asked for.
Klaus
I need some important informations:
* how / what measurement device / what connections ... did you measure the millivolts. A cheap voltameter may have problems with those low voltages.
* measure the voltage at the other two wires (input) of the strain gauge.
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