Error compiling

hello all

i relatively new arduino , have completed lot of tutorials, since have worked on own project includes load cell, relay board, temp, , humidity. had working out flaw until wanted add grams got "error compiling" error. must of fat fingered not sure what.

i have 3 tabs in project main program in tab 1 hx711.cpp in tab 2 , hx711.h in tab 3 hx711.cpp , hx711.h found on chinese website load cell work, , functioned well.

first tab     dht11_serial_file_works

// author: vernon brown
// co author kristian blåsol tutorial
//  kristian's youtube channel https://www.youtube.com/watch?v=tdg0ajy4qla
// version: 0.1.00
// purpose: hive monitoring temps , humidity


#include <dht.h>
#include "hx711.h"
#include <spi.h>

dht dht;

#define dht11_pin 10
int fan = 6;
int heater = 7;
int ledgreen = 14;
int ledred = 13;
int weight = 0;
int grams;
int ounces;
int lbs;
int cal;


void setup()
{


 
  serial.begin(115200);
  serial.println("beehive climate control");

 
  pinmode(fan, output);
  pinmode(heater, output);
  pinmode(ledgreen, output);
  pinmode(ledred, output);
 
}

void loop()
{
  // read data

  int chk = dht.read11(dht11_pin);
         weight = get_weight();   //get weight
        cal = (weight - 9102.05);
        ounces = (cal * 0.038);
        lbs = (ounces / 16);
 
    // convert fahrenheit
 float temperaturef = (dht.temperature * 9.0 / 5.0) + 32.0;
 
   
     // convert humidity
 float humidity =  (dht.humidity, 1);
 
   
     // display data
 
     serial.print(temperaturef);  serial.println(" degrees f");
     serial.print(dht.humidity, 1); serial.println("%");
     serial.print(grams);         //serial display
     serial.print(ounces);  serial.println("  ounces");
     serial.print(lbs);  serial.println("  pounds");
 

  delay(1000);
 
  //script below turns on , off heater , fan
 
   //if (dht.humidity>55) {
  if (dht.humidity>40) {
    digitalwrite(fan,high);
  } else {
    digitalwrite(fan,low);
  }
 
     //if (dht.humidity>55) {
  if (dht.humidity>40) {
    digitalwrite(ledgreen,high);
  } else {
    digitalwrite(ledgreen,low);
  }
 
    //if (dht.temperature<18) {
  if (dht.temperature<26) {
    digitalwrite(heater,high);
  } else {
    digitalwrite(heater,low);
  }
 
     //if (dht.temperature<18) {
  if (dht.temperature<26) {
    digitalwrite(ledred,high);
  } else {
    digitalwrite(ledred,low);
  }
   
}
//
// end of file
//

second tab     hx711.cpp

#include "hx711.h"

long hx711_buffer = 0;
long weight_maopi = 0,weight_shiwu = 0;

//****************************************************
//初始化hx711
//****************************************************
void init_hx711()
{
   pinmode(hx711_sck, output);   
   pinmode(hx711_dt, input);
}


//****************************************************
//获取毛皮重量
//****************************************************
void get_maopi()
{
   hx711_buffer = hx711_read();
   weight_maopi = hx711_buffer/100;      
}

//****************************************************
//称重
//****************************************************
unsigned int get_weight()
{
   hx711_buffer = hx711_read();
   hx711_buffer = hx711_buffer/100;

   weight_shiwu = hx711_buffer;
   weight_shiwu = weight_shiwu - weight_maopi;            //获取实物的ad采样数值。
   
   weight_shiwu = (unsigned int)((float)weight_shiwu/7.35+0.05);    
      //计算实物的实际重量
      //因为不同的传感器特性曲线不一样，因此，每一个传感器需要矫正这里的4.30这个除数。
      //当发现测试出来的重量偏大时，增加该数值。
      //如果测试出来的重量偏小时，减小改数值。
      //该数值一般在7.16左右。因传感器不同而定。
      //+0.05是为了四舍五入百分位

   return weight_shiwu;
}

//****************************************************
//读取hx711
//****************************************************
unsigned long hx711_read(void)   //增益128
{
   unsigned long count;
   unsigned char i;
   bool flag = 0;

   digitalwrite(hx711_dt, high);
   delaymicroseconds(1);

   digitalwrite(hx711_sck, low);
   delaymicroseconds(1);

     count=0;
     while(digitalread(hx711_dt));
     for(i=0;i<24;i++)
   {
        digitalwrite(hx711_sck, high);
      delaymicroseconds(1);
        count=count<<1;
      digitalwrite(hx711_sck, low);
      delaymicroseconds(1);
        if(digitalread(hx711_dt))
         count++;
   }
    digitalwrite(hx711_sck, high);
   count ^= 0x800000;
   delaymicroseconds(1);
   digitalwrite(hx711_sck, low);
   delaymicroseconds(1);
   
   return(count);
}

third tab      hx711.h

#ifndef __hx711__h__
#define __hx711__h__

#include <arduino.h>

#define hx711_sck 2
#define hx711_dt 3

extern void init_hx711();
extern unsigned long hx711_read(void);
extern unsigned int get_weight();
extern void get_maopi();

#endif


error


hx711_3kg/hx711.cpp.o: in function `hx711_read()':
/users/vernonbrown/dropbox/arduino/arduino/libraries/hx711_3kg/hx711.cpp:50: multiple definition of `hx711_read()'
hx711.cpp.o:hx711.cpp:50: first defined here
hx711_3kg/hx711.cpp.o: in function `get_weight()':
/users/vernonbrown/dropbox/arduino/arduino/libraries/hx711_3kg/hx711.cpp:30: multiple definition of `get_weight()'
hx711.cpp.o:hx711.cpp:30: first defined here
hx711_3kg/hx711.cpp.o: in function `hx711_read()':
/users/vernonbrown/dropbox/arduino/arduino/libraries/hx711_3kg/hx711.cpp:50: multiple definition of `hx711_buffer'
hx711.cpp.o:hx711.cpp:50: first defined here
hx711_3kg/hx711.cpp.o: in function `hx711_read()':
/users/vernonbrown/dropbox/arduino/arduino/libraries/hx711_3kg/hx711.cpp:50: multiple definition of `weight_maopi'
hx711.cpp.o:hx711.cpp:50: first defined here
hx711_3kg/hx711.cpp.o: in function `hx711_read()':
/users/vernonbrown/dropbox/arduino/arduino/libraries/hx711_3kg/hx711.cpp:50: multiple definition of `weight_shiwu'
hx711.cpp.o:hx711.cpp:50: first defined here
hx711_3kg/hx711.cpp.o: in function `get_maopi()':
/users/vernonbrown/dropbox/arduino/arduino/libraries/hx711_3kg/hx711.cpp:21: multiple definition of `get_maopi()'
hx711.cpp.o:hx711.cpp:21: first defined here
hx711_3kg/hx711.cpp.o: in function `init_hx711()':
/users/vernonbrown/dropbox/arduino/arduino/libraries/hx711_3kg/hx711.cpp:11: multiple definition of `init_hx711()'
hx711.cpp.o:hx711.cpp:11: first defined here

the hx711.ccp , hx711.h files library -
create folder called hx711 in libraries sub-folder of sketchbook
directory (that's personal libraries live), , put them their, not inside
your sketch folder.

i'm not sure why you're seeing twice - perhaps installed as
a library too?

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