hi,
The LC wires White and Green crossed over will also give the correct polarity, put the Red and Black as they were, Red +ext Black -ext

Why are you weighing in lbs and not Kg.
Which MCU are you using.?
E

 

hi,
The LC wires White and Green crossed over will also give the correct polarity, put the Red and Black as they were, Red +ext Black -ext

Why are you weighing in lbs and not Kg.
Which MCU are you using.?
E

I am using Atmega328p, running as Arduino. I only have 3.3V version. Will get a 5V version tomorrow.

 

hi,
OK, Is a UNO or Nano.?
I have some HX711's on the bench, if you get stuck post your Arduino code as an attachment.
E

 

hi,
OK, Is a UNO or Nano.?
I have some HX711's on the bench, if you get stuck post your Arduino code as an attachment.
E

Its a UNO.

right now I am using following sample code from spark fun.

I need to change the calibration factor in the library. Because according to spark fun


/*
Example using the SparkFun HX711 breakout board with a scale
By: Nathan Seidle
SparkFun Electronics
Date: November 19th, 2014
License: This code is public domain but you buy me a beer if you use this and we meet someday (Beerware license).

This example demonstrates basic scale output. See the calibration sketch to get the calibration_factor for your
specific load cell setup.

This example code uses bogde's excellent library: https://github.com/bogde/HX711
bogde's library is released under a GNU GENERAL PUBLIC LICENSE

The HX711 does one thing well: read load cells. The breakout board is compatible with any wheat-stone bridge
based load cell which should allow a user to measure everything from a few grams to tens of tons.
Arduino pin 2 -> HX711 CLK
3 -> DAT
5V -> VCC
GND -> GND

The HX711 board can be powered from 2.7V to 5V so the Arduino 5V power should be fine.

*/

#include "HX711.h"


float calibration_factor = -7050; //-7050 worked for my 440lb max scale setup


#define DOUT 3
#define CLK 2

HX711 scale(DOUT, CLK);

void setup() {
Serial.begin(9600);
Serial.println("HX711 scale demo");

scale.set_scale(calibration_factor); //This value is obtained by using the SparkFun_HX711_Calibration sketch
scale.tare(); //Assuming there is no weight on the scale at start up, reset the scale to 0

Serial.println("Readings:");
}

void loop() {
Serial.print("Reading: ");
Serial.print(scale.get_units(), 1); //scale.get_units() returns a float
Serial.print(" lbs"); //You can change this to kg but you'll need to refactor the calibration_factor
Serial.println();
}




https://github.com/bogde/HX711