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measure/measure.ino

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+/*
+ 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"
+
+#define calibration_factor -10160.0 //This value is obtained using the SparkFun_HX711_Calibration sketch
+
+#define DOUT  3
+#define CLK  2
+
+HX711 scale;
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("HX711 scale demo");
+
+  scale.begin(DOUT, CLK);
+  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();
+  Serial.println(scale.get_units(), 1);
+}