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20 lines
255 B
C++
20 lines
255 B
C++
const int tracingPin = 4;
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const int ledPin = 13;
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void setup()
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{
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pinMode(tracingPin, INPUT);
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pinMode(ledPin, OUTPUT);
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}
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void loop()
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{
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int val = digitalRead(tracingPin);
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if(val == HIGH)
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{
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digitalWrite(ledPin, HIGH);
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}
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else
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{
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digitalWrite(ledPin, LOW);
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}
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}
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