Arduino UNO High Precision Counting Scale

Everyone needs a good scale in kitchen, what better than to build a high precision scale with the UNO?

Oct 4, 2017

•

32817 views

•

23 respects

Components and supplies

Single Turn Potentiometer- 10k ohms

Load cell C3 class minimum

Standard LCD - 16x2 White on Blue

Wood

Arduino UNO

RFduino Battery Shield

Screws

Hx711 A/D converter

Tools and machines

Buzzer

Soldering iron (generic)

Project description

Code

Arduino uno scale test

arduino

The main software is divided into two parts, weighing and counting function. During the boot animation I entered a subroutine for the scale calibration function. The calibration data is stored in the Euprom of Arduino for subsequent uses.

1#include "HX711.h"
2#include"math.h"
3#include <EEPROMex.h>
4#include  <EEPROMVar.h>
5#include <LiquidCrystal.h>  
6#define BUTTON 7 
7#define LED  13 
8#define TAREBUTTON 10
9#define buzzer 8
10// HX711.DOUT - pin #A2
11//  HX711.PD_SCK - pin #A3
12LiquidCrystal lcd(12, 11, 5, 4, 3, 2); 
13
14HX711 scale(A2,  A3); // parameter "gain" is ommited; the default value 128 is used by the library
15
16long  somma1=0;
17float I=0;
18int a;
19float b;
20float calibval1;
21float calibval2;
22float  media2=0;
23float media1=0;
24long somma2=0;
25float pmax= 900;
26int val=0;
27int  val1=0; //valore del pulsante di tara
28float t =0;
29float g=0;
30void setup()  {
31  scale.set_scale();
32  scale.tare();
33  pinMode (buzzer, OUTPUT);
34  tone(buzzer,440,1000);
35  delay(500);
36  noTone(buzzer);
37  delay(200);
38  tone (buzzer,330,1000);
39  delay(1000);
40  noTone(buzzer);
41Serial.begin  (9600);
42  lcd.begin(16, 2); 
43  lcd.print ("Fede Bil");
44  lcd.setCursor(  0,1);
45  lcd.print ("ver.1.0 :)");
46   for (int positionCounter = 0; positionCounter  < 6; positionCounter++) {
47    // scroll one position left:
48    lcd.scrollDisplayRight();
49    // wait a bit:
50    delay(450);} 
51     for (int positionCounter = 0; positionCounter  < 6; positionCounter++) {
52    // scroll one position left:
53    lcd.scrollDisplayLeft();
54    // wait a bit:
55    delay(450);}
56  delay(3000);
57  lcd.clear ();
58  lcd.print ("Press Button 2");
59  lcd.setCursor(0,1);
60  lcd.print("to calibrate");
61  delay(1500);
62 pinMode(LED, OUTPUT); 
63 pinMode (TAREBUTTON,OUTPUT); //IMPOSTA  IL PULSANTE DI TARA
64 pinMode(BUTTON, INPUT);     // imposta il pin digitale come  input 
65val=digitalRead (BUTTON);
66if (val==HIGH){
67  tone(buzzer,1047,1000);
68digitalWrite(LED,  HIGH);
69calibrazione();}
70else {
71  tone(buzzer,660,500);
72Serial.println  (EEPROM.readFloat(10)); // restituisce il valore float memorizzato all'indirizzo  indicato Ricarica calibval1
73calibval2= (EEPROM.readFloat(10));
74Serial.print  ("calibval2=");
75Serial.println (calibval2);
76scale.set_scale (calibval2);
77}}
78
79void  loop() {
80 
81pippo:  I= (scale.get_units(10));
82Serial.println(I);
83if (I  < 1 &&I>0)
84{ val1= digitalRead (TAREBUTTON);
85if (val1==HIGH){
86  tone(buzzer,622,1000);
87  lcd.clear();
88  lcd.print ("Tara");
89  delay (1000);
90  t= scale.get_units(10);
91  g=round(t);
92  scale.tare();}
93  lcd.clear();
94  lcd.print("d=0,5g");
95  //lcd.setCursor(9,0);
96 lcd.setCursor(0,1);
97  lcd.print("0.00");
98  lcd.setCursor(9,0);
99  lcd.print ("d=0.2g");
100  lcd.setCursor (9,1);
101  lcd.print(I);
102  delay(500);
103  Serial.println ("0.00");
104   val=digitalRead (BUTTON);
105  if (val==HIGH){
106  tone(buzzer,1047,500);
107digitalWrite(LED, HIGH);
108menu();}
109else {
110}
111  goto pippo;
112} 
113val1= digitalRead (TAREBUTTON);
114if (val1==HIGH){
115  tone(buzzer,622,1000);
116  lcd.clear();
117  lcd.print ("Tara");
118  delay (1000);
119  t =scale.get_units(10);
120   g=round(t);
121  scale.tare();
122 val=digitalRead (BUTTON); 
123  if (val==HIGH){
124  tone(buzzer,1047,500);
125digitalWrite(LED, HIGH);
126menu();}
127else {
128}}
129  int c= (I*10);
130  int e = (I*10);
131 // e=round (c);
132 int peso_div = (e+1)-((e+1)%2);
133int  peso_div_5 = (c+2)-((c+2)%5);
134  float f = (peso_div);
135  float peso2 = (f/10);
136   float d = (peso_div_5);
137  float pesofin=(d/10);
138   if (pesofin > pmax)
139   {tone(buzzer,1047,2000);
140     lcd.clear();
141   lcd.print ("Overload");
142    goto pippo;}
143   lcd.clear();
144   lcd.setCursor (0,0);
145    lcd.print  ("d=0,5g");
146    lcd.setCursor(0, 1); 
147    lcd.print (pesofin);
148    lcd.setCursor(9,0);
149    lcd.print ("d=0.2g");
150    lcd.setCursor (9,1);
151    lcd.print (peso2);
152    delay(150);
153    val=digitalRead (BUTTON);
154if (val==HIGH){
155  tone(buzzer,1047,500);
156digitalWrite(LED,  HIGH);
157lcd.clear();
158menu();}
159else {
160}
161}
162

#include "HX711.h"
#include"math.h"
#include <EEPROMex.h>
#include  <EEPROMVar.h>
#include <LiquidCrystal.h>  
#define BUTTON 7 
#define LED  13 
#define TAREBUTTON 10
#define buzzer 8
// HX711.DOUT - pin #A2
//  HX711.PD_SCK - pin #A3
LiquidCrystal lcd(12, 11, 5, 4, 3, 2); 

HX711 scale(A2,  A3); // parameter "gain" is ommited; the default value 128 is used by the library

long  somma1=0;
float I=0;
int a;
float b;
float calibval1;
float calibval2;
float  media2=0;
float media1=0;
long somma2=0;
float pmax= 900;
int val=0;
int  val1=0; //valore del pulsante di tara
float t =0;
float g=0;
void setup()  {
  scale.set_scale();
  scale.tare();
  pinMode (buzzer, OUTPUT);
  tone(buzzer,440,1000);
  delay(500);
  noTone(buzzer);
  delay(200);
  tone (buzzer,330,1000);
  delay(1000);
  noTone(buzzer);
Serial.begin  (9600);
  lcd.begin(16, 2); 
  lcd.print ("Fede Bil");
  lcd.setCursor(  0,1);
  lcd.print ("ver.1.0 :)");
   for (int positionCounter = 0; positionCounter  < 6; positionCounter++) {
    // scroll one position left:
    lcd.scrollDisplayRight();
    // wait a bit:
    delay(450);} 
     for (int positionCounter = 0; positionCounter  < 6; positionCounter++) {
    // scroll one position left:
    lcd.scrollDisplayLeft();
    // wait a bit:
    delay(450);}
  delay(3000);
  lcd.clear ();
  lcd.print ("Press Button 2");
  lcd.setCursor(0,1);
  lcd.print("to calibrate");
  delay(1500);
 pinMode(LED, OUTPUT); 
 pinMode (TAREBUTTON,OUTPUT); //IMPOSTA  IL PULSANTE DI TARA
 pinMode(BUTTON, INPUT);     // imposta il pin digitale come  input 
val=digitalRead (BUTTON);
if (val==HIGH){
  tone(buzzer,1047,1000);
digitalWrite(LED,  HIGH);
calibrazione();}
else {
  tone(buzzer,660,500);
Serial.println  (EEPROM.readFloat(10)); // restituisce il valore float memorizzato all'indirizzo  indicato Ricarica calibval1
calibval2= (EEPROM.readFloat(10));
Serial.print  ("calibval2=");
Serial.println (calibval2);
scale.set_scale (calibval2);
}}

void  loop() {
 
pippo:  I= (scale.get_units(10));
Serial.println(I);
if (I  < 1 &&I>0)
{ val1= digitalRead (TAREBUTTON);
if (val1==HIGH){
  tone(buzzer,622,1000);
  lcd.clear();
  lcd.print ("Tara");
  delay (1000);
  t= scale.get_units(10);
  g=round(t);
  scale.tare();}
  lcd.clear();
  lcd.print("d=0,5g");
  //lcd.setCursor(9,0);
 lcd.setCursor(0,1);
  lcd.print("0.00");
  lcd.setCursor(9,0);
  lcd.print ("d=0.2g");
  lcd.setCursor (9,1);
  lcd.print(I);
  delay(500);
  Serial.println ("0.00");
   val=digitalRead (BUTTON);
  if (val==HIGH){
  tone(buzzer,1047,500);
digitalWrite(LED, HIGH);
menu();}
else {
}
  goto pippo;
} 
val1= digitalRead (TAREBUTTON);
if (val1==HIGH){
  tone(buzzer,622,1000);
  lcd.clear();
  lcd.print ("Tara");
  delay (1000);
  t =scale.get_units(10);
   g=round(t);
  scale.tare();
 val=digitalRead (BUTTON); 
  if (val==HIGH){
  tone(buzzer,1047,500);
digitalWrite(LED, HIGH);
menu();}
else {
}}
  int c= (I*10);
  int e = (I*10);
 // e=round (c);
 int peso_div = (e+1)-((e+1)%2);
int  peso_div_5 = (c+2)-((c+2)%5);
  float f = (peso_div);
  float peso2 = (f/10);
   float d = (peso_div_5);
  float pesofin=(d/10);
   if (pesofin > pmax)
   {tone(buzzer,1047,2000);
     lcd.clear();
   lcd.print ("Overload");
    goto pippo;}
   lcd.clear();
   lcd.setCursor (0,0);
    lcd.print  ("d=0,5g");
    lcd.setCursor(0, 1); 
    lcd.print (pesofin);
    lcd.setCursor(9,0);
    lcd.print ("d=0.2g");
    lcd.setCursor (9,1);
    lcd.print (peso2);
    delay(150);
    val=digitalRead (BUTTON);
if (val==HIGH){
  tone(buzzer,1047,500);
digitalWrite(LED,  HIGH);
lcd.clear();
menu();}
else {
}
}

Comments

Only logged in users can leave comments

Fedeasche

0 Followers

•

0 Projects

Intro