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Izabela Grubicka » calibrating_load_cell.ino

Izabela Grubicka, 17/07/2026 15:46

 
#include <Arduino.h>
#include "soc/rtc.h"
#include "HX711.h" //HX711 Arduino Library by Bogdan Necula

const int LOADCELL_DOUT_PIN = 16;
const int LOADCELL_SCK_PIN = 4;

HX711 scale;

void setup() {
Serial.begin(115200);

rtc_cpu_freq_config_t config;
rtc_clk_cpu_freq_get_config(&config);
rtc_clk_cpu_freq_mhz_to_config(RTC_XTAL_FREQ_40M, &config);
rtc_clk_cpu_freq_set_config_fast(&config);

scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
}

void loop() {

if (scale.is_ready()) {
scale.set_scale();
Serial.println("Tare... remove any weights from the scale.");
delay(5000);
scale.tare();
Serial.println("Tare done...");
Serial.print("Place a known weight on the scale...");
delay(5000);
long reading = scale.get_units(10);
Serial.print("Result: ");
Serial.println(reading);
}
else {
Serial.println("HX711 not found.");
}
delay(1000);
}
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