Just make a separate program for this that expects a given calibration weight, and writes the result to EEPROM. Then the main program reads that value. This way I get rid of the hard coded calibration value, and I don't have to do the maths myself each time.
Just make a separate program for this that expects a given calibration weight, and writes the result to EEPROM. Then the main program reads that value. This way I get rid of the hard coded calibration value, and I don't have to do the maths myself each time.