using 4 load cells

[Kowng]

Hi bodge i was wondering how if there is a code that takes the average of 4 load cells and gives me a single figure. Thanks.

[tvdb2003]

I think this will work if you make multiple instance's of hx711 scale for example something like this:
(this is only for 2 loadcells so you should extend it if you would like more)

`/**
*

• HX711 library for Arduino - example file
• https://github.com/bogde/HX711
• MIT License
• (c) 2018 Bogdan Necula

**/
#include "HX711.h"

// HX711 circuit wiring
const int LOADCELL_DOUT_PIN0 = 2;
const int LOADCELL_SCK_PIN0 = 3;

const int LOADCELL_DOUT_PIN1 = 4 ;// or whatever pin you want to use
const int LOADCELL_SCK_PIN1 = 5; // or whatever pin you want to use
long average_weight = 0;
HX711 scale;
HX711 scale1; // do this as well for load cell 3 and 4

void setup() {
Serial.begin(38400);
Serial.println("HX711 Demo");

Serial.println("Initializing the scale");

// Initialize library with data output pin, clock input pin and gain factor.
// Channel selection is made by passing the appropriate gain:
// - With a gain factor of 64 or 128, channel A is selected
// - With a gain factor of 32, channel B is selected
// By omitting the gain factor parameter, the library
// default "128" (Channel A) is used here.
scale.begin(LOADCELL_DOUT_PIN0, LOADCELL_SCK_PIN0);
scale1.begin(LOADCELL_DOUT_PIN1, LOADCELL_SCK_PIN1);

Serial.println("Before setting up the scale:");
Serial.print("read: \t\t");
Serial.println(scale.read()); // print a raw reading from the ADC

Serial.print("read average: \t\t");
Serial.println(scale.read_average(20)); // print the average of 20 readings from the ADC

Serial.print("get value: \t\t");
Serial.println(scale.get_value(5)); // print the average of 5 readings from the ADC minus the tare weight (not set yet)

Serial.print("get units: \t\t");
Serial.println(scale.get_units(5), 1); // print the average of 5 readings from the ADC minus tare weight (not set) divided
// by the SCALE parameter (not set yet)

scale.set_scale(2280.f); // this value is obtained by calibrating the scale with known weights; see the README for details
scale.tare(); // reset the scale to 0

scale1.set_scale(2280.f); // this value is obtained by calibrating the scale with known weights; see the README for details
scale1.tare(); // reset the scale to 0

Serial.println("After setting up the scale:");

Serial.print("read: \t\t");
Serial.println(scale.read()); // print a raw reading from the ADC

Serial.print("read average: \t\t");
Serial.println(scale.read_average(20)); // print the average of 20 readings from the ADC

Serial.print("get value: \t\t");
Serial.println(scale.get_value(5)); // print the average of 5 readings from the ADC minus the tare weight, set with tare()

Serial.print("get units: \t\t");
Serial.println(scale.get_units(5), 1); // print the average of 5 readings from the ADC minus tare weight, divided
// by the SCALE parameter set with set_scale

Serial.println("Readings:");
}

void loop() {
average_weight = (scale.get_units(),1 + scale1.get_units(),1)/2;
Serial.print("average weight:" );
Serial.println(average_weight);
scale.power_down(); // put the ADC in sleep mode
delay(5000);
scale.power_up();
}
`

but i only have one loadcell so you should try it yourself to see if it works.