📣ความรู้ไปประยุกต์ใช้อุปกรณ์อิเล็กทรอนิกส์เพื่อสร้างสรรค์เป็นโครงงานตามที่โจทย์กำหนดได้คำสั่งเขียน
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int Sw1 = A0;
int Sw2 = A1;
int Sw3 = A2;
int distanceThreshold = 0;
int cm = 0;
int inches = 0;
long readUltrasonicDistance(int triggerPin, int echoPin)
{
pinMode(triggerPin, OUTPUT);
digitalWrite(triggerPin, LOW);
delayMicroseconds(2);
digitalWrite(triggerPin, HIGH);
delayMicroseconds(10);
digitalWrite(triggerPin, LOW);
pinMode(echoPin, INPUT);
return pulseIn(echoPin, HIGH);
}
void setup()
{
lcd.begin(16, 2);
pinMode(Sw1, INPUT);
pinMode(Sw2, INPUT);
pinMode(Sw3, INPUT);
Serial.begin(9600);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
}
void A()
{
lcd.clear();
lcd.setCursor(5,0);
lcd.print("tengtechno");
lcd.setCursor(5,1);
lcd.print("tengtechno");
}
void B()
{
lcd.clear();
lcd.setCursor(3,0);
lcd.print("Thank");
lcd.setCursor(3,1);
lcd.print("Thank");
}
void C()
{
lcd.clear();
}
void loop()
{
distanceThreshold = 350;
cm = 0.01723 * readUltrasonicDistance(7, 7);
inches = (cm / 2.54);
Serial.print(cm);
Serial.print("cm, ");
Serial.print(inches);
Serial.println("in");
if (cm > distanceThreshold- 150) {
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
}
if (cm <= distanceThreshold - 150&& cm > distanceThreshold - 250) {
digitalWrite(8, HIGH);
digitalWrite(9, LOW);
digitalWrite(10, LOW);
}
if (cm <= distanceThreshold - 250 && cm > distanceThreshold - 330) {
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, LOW);
}
if (cm <= distanceThreshold - 330 && cm > distanceThreshold - 350) {
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
}
if (cm <= distanceThreshold - 350) {
digitalWrite(8, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);
}
delay(100);
int StatusSw1;
int StatusSw2;
int StatusSw3;
StatusSw1 = digitalRead(Sw1);
StatusSw2 = digitalRead(Sw2);
StatusSw3 = digitalRead(Sw3);
if(StatusSw1 == 0)
{
A();
}
else if(StatusSw2 == 0)
{
B();
}
else if(StatusSw3 == 0)
{
C();
}
}
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