ผมทำ sensorจับเหรียญ กับ จอคับcodeเลยดูเยอะ หน้าจอlcdขี้นแค่ 1
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ผมอยากให้มันขั้นแบบ 1  2  5  10  sum
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(ผมไม่มีความรู้เรื่อง code น่ะคับก็อปเขามา)
#include <CapacitiveSensor.h>

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);

CapacitiveSensor capSensor  = CapacitiveSensor(4, 2);
CapacitiveSensor capSensor2 = CapacitiveSensor(4, 5);
CapacitiveSensor capSensor5 = CapacitiveSensor(4, 6);
CapacitiveSensor capSensor10 = CapacitiveSensor(4, 7);

int ms_time   = 800;
int threshold = 640;
const int ledPin = 13;
bool led_state = LOW;
bool pass = false;

int count_c1 = 0;
int count_c2 = 0;
int count_c5 = 0;
int count_c10 = 0;
int sum       = 0;

unsigned long ms1=0;
unsigned long ms2=0;
unsigned long ms5=0;
unsigned long ms10=0;

void setup()
{
  lcd.begin();                      // initialize the lcd

// Print a message to the LCD
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("1  2  5  10  sum");


  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  delay(50);
}

void loop()
{

   checkCoin1();
   checkCoin2();
   checkCoin5();
   checkCoin10();

   lcd.setCursor(0,1);
   lcd.print( count_c1);

   lcd.setCursor(3,1);
   lcd.print( count_c2);

   lcd.setCursor(6,1);
   lcd.print( count_c5);

   lcd.setCursor(9,1);
   lcd.print( count_c10);

   lcd.setCursor(13,1);
   lcd.print( sum);
}
void checkCoin1()
{
  long sensorValue = capSensor.capacitiveSensor(30);


  Serial.println(sensorValue);

  if (sensorValue > threshold)
  {
    if( ms1 == 0){
      ms1 = millis();
      count_c1++;
      sum = sum + 1;
    }
      digitalWrite(ledPin, HIGH);
    
  }else{
      digitalWrite(ledPin, LOW);
  }

  if( ms1 != 0){
      if( (millis() - ms1) > ms_time){
         ms1 = 0;
      }
  }
}
void checkCoin2()
{
  long sensorValue = capSensor2.capacitiveSensor(30);


  Serial.println(sensorValue);

  if (sensorValue > threshold)
  {
    if( ms2 == 0){
      ms2 = millis();
      count_c2++;
      sum = sum + 2;
    }
      digitalWrite(ledPin, HIGH);
    
  }else{
      digitalWrite(ledPin, LOW);
  }

  if( ms2 != 0){
      if( (millis() - ms2) > ms_time){
         ms2 = 0;
      }
  }
}

void checkCoin5()
{
  long sensorValue = capSensor5.capacitiveSensor(30);


  Serial.println(sensorValue);

  if (sensorValue > threshold)
  {
    if( ms5 == 0){
      ms5 = millis();
      count_c5++;
      sum = sum + 5;
    }
      digitalWrite(ledPin, HIGH);
    
  }else{
      digitalWrite(ledPin, LOW);
  }

  if( ms5 != 0){
      if( (millis() - ms5) > ms_time){
         ms5 = 0;
      }
  }
}
void checkCoin10()
{
  long sensorValue = capSensor10.capacitiveSensor(30);


  Serial.println(sensorValue);

  if (sensorValue > threshold)
  {
    if( ms10 == 0){
      ms10 = millis();
      count_c10++;
      sum = sum + 10;
    }
      digitalWrite(ledPin, HIGH);
    
  }else{
      digitalWrite(ledPin, LOW);
  }

  if( ms10 != 0){
      if( (millis() - ms10) > ms_time){
         ms10 = 0;
      }
  }
}