HX711 ADC Fluctuations
I experimented this fairly extensively as a mOhm meter set-up here: https://dannyelectronics.wordpress.com/2015/10/25/a-hx711-based-milliohm-meter/


  1) Is there a simple way to reduce fluctions ? What can I try ?


you can try filtering, either in hardware or software. or using a different adc.


  2)what can be done in software to reduce noise ?


filtering.


  3)if the output of load cells is same (0-20mv) why does this issue arise ? is it due to multiplication factor ? lower range load cells work fine ..is it due to stable first bits of ADC output ?


not sure what you meant by "this issue". noise is inevitable, especially for high resolution adc. sometimes that noise can be a very useful feature in some applications.


  4)I read somewhere that fluctions can be reduced using some hardware peripherals like resistors .
  how to do it ?


in some applications, yes. cannot see how resistors alone can help here.