40 lines
728 B
Arduino
40 lines
728 B
Arduino
// https://www.youtube.com/watch?v=po_lHVKFQWI
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// http://heliosoph.mit-links.info/photointerrupter-basics/
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/*
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+5V --220 Ohm-- ---- GND
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+ D
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TCST2103
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E +
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GND ---- ----10kOhm---- +5V
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----A0 PIN
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*/
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int sensorPin = A0;
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int sensorValue = 0;
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int ledPin = LED_BUILTIN;
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void setup() {
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pinMode(ledPin, OUTPUT);
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Serial.begin(9600);
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}
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void loop() {
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sensorValue = analogRead(sensorPin);
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Serial.println(sensorValue);
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if (sensorValue > 512) {
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digitalWrite(ledPin, HIGH);
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}
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else {
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digitalWrite(ledPin, LOW);
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}
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delay(200);
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}
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