How HX711 calibration to water level

Projects Programming
1

How HX711 calibration to water level.
If I only know the level. I have the code:

#include "HX711.h"
const int LOADCELL_DOUT_PIN = 23;
const int LOADCELL_SCK_PIN = 22;

float y = 100; // vyska 100 mm

HX711 scale;
 
void setup() {
  Serial.begin(115200);
  scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
}

void loop() {

  if (scale.wait_ready_timeout(1000)) {
    long reading = scale.read();
    Serial.print("HX711 reading: ");
    Serial.println(reading);
    float m = reading;
    float y0 = (y/m);
    float y1 = (y0*m);
    Serial.print("hladina: ");
    Serial.println(y1);
  // primka
    float dy = (y-y1);
    float dx = (m - reading);
    float a = (dy/dx);
    float b = (y1-(a*m));
    float p = (a*reading+b);
    Serial.print("primka: ");
    Serial.println(p);

  } else {
    Serial.println("HX711 not found.");
  }
  delay(1500);
  
}

How should I write the first value from HX711 without load per m - write automatically?

2

Perhaps, do it in setup()?

3

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