之前做過一個電子秤，后來老婆說她要送給她同學一臺，我只好再做一個....順便把制作方法也發了。
用到的器材有應變梁式力傳感器一個（淘寶上有賣），Arduino nano一個，nokia 5110液晶一塊，hx711測重芯片一個（已經焊好的），有機玻璃板兩塊，面包板一塊，網線里的細導線若干。
在附上程序代碼：
#include //液晶驅動的庫
#include //hx711的庫
const int btpin=7;
int btst=0;
HX711 hx(9, 10);
int j=0;
int i=0;
int ii=0;
int j0=0;
double sum0 = 0;
double sum = 0;
LCD5110 myGLCD(2,3,4,6,5);
extern uint8_t SmallFont[];
extern uint8_t MediumNumbers[];
extern uint8_t BigNumbers[];
void setup()
{ Serial.begin(9600);
myGLCD.InitLCD();
myGLCD.setFont(SmallFont);
myGLCD.print("Angela to ", LEFT, 12); //開機時會顯示Angela送給Helen
myGLCD.print("Helen!", CENTER, 36);
delay(1500);
myGLCD.InitLCD();
sum = hx.read();
sum0=sum/1300;}
void loop()
{ btst=digitalRead(btpin);
sum = hx.read();
//Serial.println(sum);
sum=sum/1300;//除以多少需要自己去根據不同的力傳感器調節
if(btst==1)
sum0=sum;
j=sum-sum0;
if(j!=j0)
myGLCD.InitLCD();
j0=j;
Serial.println(j);
myGLCD.setFont(BigNumbers);
myGLCD.printNumI(j, CENTER, 24);
myGLCD.setFont(SmallFont);
myGLCD.print("Helen's scale", LEFT, 0); //會顯示Helen的稱
myGLCD.print("g", RIGHT, 36);
delay(200);
}
void loop()
{ btst=digitalRead(btpin);
sum = hx.read();
//Serial.println(sum);
sum=sum/1300;
if(btst==1)
sum0=sum;
j=sum-sum0;
if(j!=j0)
myGLCD.InitLCD();
j0=j;
Serial.println(j);
myGLCD.setFont(BigNumbers);
myGLCD.printNumI(j, CENTER, 24);
myGLCD.setFont(SmallFont);
myGLCD.print("Helen's scale", LEFT, 0);
myGLCD.print("g", RIGHT, 36);
delay(200);
}
///////////////////////////////////////////////////////////////
