Loadcell and step motor

Projects General Guidance
1

hi, i'm having issues with my loadcell and my step motor. My load cell is not working optimally, it has spikes from nothing to 800 and when I want to turn on my step motor it does nothing. the load cell and the step motor used the same 5v.

#include "HX711.h"
#include <Wire.h>
#include <Pushbutton.h>

// HX711 circuit wiring
const int LOADCELL_DOUT_PIN = 2;
const int LOADCELL_SCK_PIN = 3;

HX711 scale;
int reading;
int lastReading;
// REPLACE WITH YOUR CALIBRATION FACTOR
#define CALIBRATION_FACTOR -476.592

// Button
#define BUTTON_PIN 4
Pushbutton button(BUTTON_PIN);

// Stepper motor pins
const int int1 = 10;
const int int2 = 11;
const int int3 = 12;
const int int4 = 13;

const int counterClockwise = 8;
const int clockwise = 7;

int pole1[] = {0, 0, 0, 0, 0, 1, 1, 1, 0};
int pole2[] = {0, 0, 0, 1, 1, 1, 0, 0, 0};
int pole3[] = {0, 1, 1, 1, 0, 0, 0, 0, 0};
int pole4[] = {1, 1, 0, 0, 0, 0, 0, 1, 0};

int counter1 = 0;
int counter2 = 0;

int dir = 3;
int poleStep = 0;

void setup() {
  Serial.begin(9600);

  // Initialize the scale
  Serial.println("Initializing the scale");
  scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
  scale.set_scale(CALIBRATION_FACTOR); // this value is obtained by calibrating the scale with known weights
  scale.tare(); // reset the scale to 0

  // Initialize stepper motor pins
  pinMode(int1, OUTPUT);
  pinMode(int2, OUTPUT);
  pinMode(int3, OUTPUT);
  pinMode(int4, OUTPUT);

  pinMode(counterClockwise, INPUT_PULLUP);
  pinMode(clockwise, INPUT_PULLUP);
}

void loop() {
  // Handle button press for scale tare
  if (button.isPressed()) {
    Serial.print("tare...");
    scale.tare();
  }

  // Read and print scale data
  if (scale.wait_ready_timeout(200)) {
    reading = round(scale.get_units());
    Serial.print("gram ");
    Serial.println(reading);
    if (reading != lastReading) {
      // Do something if the reading has changed
    }
    lastReading = reading;
  } else {
    Serial.println("HX711 not found.");
  }

  // Handle stepper motor control
  int btn1State = digitalRead(counterClockwise);
  int btn2State = digitalRead(clockwise);

  if (btn1State == LOW) {
    counter1++;
    delay(500);

    if (counter1 != 2) {
      counter2 = 0;
      dir = 1;
    } else {
      counter1 = 0;
      dir = 3;
    }
  }

  if (btn2State == LOW) {
    counter2++;
    delay(500);

    if (counter2 != 2) {
      counter1 = 0;
      dir = 2;
    } else {
      counter2 = 0;
      dir = 3;
    }
  }

  if (dir == 1) {
    poleStep++;
    driverStepper(poleStep);
  } else if (dir == 2) {
    poleStep--;
    driverStepper(poleStep);
  } else {
    driverStepper(8);
  }

  if (poleStep > 7) {
    poleStep = 0;
  } else if (poleStep < 0) {
    poleStep = 7;
  }
  delay(1);
}

void driverStepper(int step) {
  digitalWrite(int1, pole1[step]);
  digitalWrite(int2, pole2[step]);
  digitalWrite(int3, pole3[step]);
  digitalWrite(int4, pole4[step]);
}
2

Please post schematics.

First You need to manage the loadcell. Shit in, shit out the talk is.

You might be stepping at a way too high rate,

3

What motor driver are you using?

4

(post deleted by author)

6

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.