Monitoring Berat dan Tinggi Badan Hasilnya bisa diprint

Monitoring Berat dan Tinggi Badan Hasilnya bisa diprint

         Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara membuat sebuah alat yang dapat mengukur berat dan tinggi badan secara langsung dengan Arduino dan sensor jarak HC-SRF04 dengan sensor berat menggunakan loadcell. untuk lebih jelasnya berikut adalah koding dan skemanya.

 

1. Skema

2. Program Arduino IDE

 #include <Wire.h>

#include "HX711.h"

#include "U8glib.h"

U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK);

#include <SoftwareSerial.h>

SoftwareSerial Thermal(2, 3);

// HX711.DOUT    - pin #6

// HX711.PD_SCK    - pin #7

#define trigPin 4

#define echoPin 5

HX711 scale(6, 7);       

int btprint = 12;

int btprintx;

long duration, distance;

float tera = 0;

int berat;

float fix;

int x;

char tmp_string1[8];

char tmp_string2[8];

int zero=0;

int heatTime = 80;

int heatInterval = 255;

char printDensity = 15;

char printBreakTime = 15;

void draw(void) {

  itoa(distance, tmp_string1, 8);

  itoa(berat, tmp_string2, 8);

  

  u8g.setFont(u8g_font_unifont);

  u8g.drawStr(5, 25, "S= ");

  u8g.drawStr(30, 25, tmp_string1);

  u8g.drawStr(5, 40, "W= ");

  u8g.drawStr(30, 40, tmp_string2);

 

}

void initPrinter()

{

 //Modify the print speed and heat

 Thermal.write(27);

 Thermal.write(55);

 Thermal.write(7); //Default 64 dots = 8*('7'+1)

 Thermal.write(heatTime); //Default 80 or 800us

 Thermal.write(heatInterval); //Default 2 or 20us

 //Modify the print density and timeout

 Thermal.write(18);

 Thermal.write(35);

 int printSetting = (printDensity<<4) | printBreakTime;

 Thermal.write(printSetting); //Combination of printDensity and printBreakTime

}

void setup() {

  Wire.begin();

  Serial.begin(9600);

  Thermal.begin(9600); // to write to our new printer

  initPrinter();

 

  pinMode(trigPin, OUTPUT);

  pinMode(echoPin, INPUT);

  pinMode(btprint, INPUT_PULLUP);

 

  scale.set_scale(2280.f);       // this value is obtained by calibrating the scale with known weights; see the README for details

  scale.tare();                  // reset the scale to 0

  if ( u8g.getMode() == U8G_MODE_R3G3B2 ) {

    u8g.setColorIndex(255);     // white

  }

  else if ( u8g.getMode() == U8G_MODE_GRAY2BIT ) {

    u8g.setColorIndex(3);         // max intensity

  }

  else if ( u8g.getMode() == U8G_MODE_BW ) {

    u8g.setColorIndex(1);         // pixel on

  }

  else if ( u8g.getMode() == U8G_MODE_HICOLOR ) {

    u8g.setHiColorByRGB(255,255,255);

  }

 

}

void loop() {

 

  digitalWrite(trigPin, LOW);  // Added this line

  delayMicroseconds(2); // Added this line

  digitalWrite(trigPin, HIGH);

  delayMicroseconds(10); // Added this line

  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);

  distance = (duration/2) / 29.1;

  Serial.print("S: ");

  Serial.print(distance);

  Serial.print(" w: ");

  Serial.println(berat); 

  

  berat = scale.get_units(10) * -1;

  fix = ((berat + 1.523) / 0.223) - tera ;

 if (fix < 0 ) {

  fix = 0;

  }

    u8g.firstPage();

  do {

    draw();

  } while( u8g.nextPage() );

 

  scale.power_down();                  

  delay(1000);

  scale.power_up();

btprintx = digitalRead(btprint);

if (btprintx == 0) {    

   Serial.println("print ready");

   Serial.println("printing....");

   delay(1000);

  //print

  Thermal.write(27);

  Thermal.write(45);

  Thermal.write(1);

  Thermal.print("Tinggi= ");

  Thermal.print(distance);

  Thermal.println(" cm");

  Thermal.print("Berat= ");

  Thermal.print(berat);

  Thermal.println(" kg");

  Thermal.write(10);

  Thermal.write(10);

  }

}

3. VIDEO HASILNYA