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// 光センサー、スピーカーの組み合わせで、プログラミングを学ぶ | |
#define cdsPin 5 | |
#define SPEAKER 10 | |
void setup() { | |
Serial.begin(9600); | |
pinMode(cdsPin, INPUT); | |
pinMode(SPEAKER, OUTPUT); | |
} | |
void loop() { | |
// R1のAD値を取得 | |
float cds_ad = analogRead(cdsPin); | |
// AD値を電圧値に変換 | |
float cds_v = cds_ad * 5 / 1023; | |
// 電圧値より、Lux計算 | |
float lux = 10000 * cds_v / (5 - cds_v) / 1000; | |
Serial.print(lux); | |
Serial.println(" Lux "); | |
if (lux > 20) { | |
Serial.println("HIGH lux"); | |
delay(200); | |
} else { | |
Serial.println("LOW lux"); | |
delay(200); | |
} | |
//プログラムはここからかえます// | |
if (lux < 20) { // 2) > にかえよう 3)数字をシリアルモニターを参考にして数字をかえよう | |
tone(SPEAKER,330) ; // 1) 数字をかえよう | |
delay(200); // 1) 数字をかえよう | |
tone(SPEAKER,200) ; // 1) 数字をかえよう | |
delay(200); // 1) 数字をかえよう | |
} else { | |
noTone(SPEAKER); | |
} | |
} |
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