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//05_hikari_led | |
//暗くなった回数を数えて、5回目で光る | |
//SchooMyとかいてあるところまですすもう | |
#define ledPin 10 | |
#define cdsPin 5 | |
#define ON LOW | |
#define OFF HIGH | |
int count = 0; | |
float lux; | |
void setup() { | |
Serial.begin(9600); | |
pinMode(ledPin, OUTPUT); | |
pinMode(cdsPin, INPUT); | |
} | |
long get_lux() { | |
// 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; | |
lux = 10000 * cds_v / (5 - cds_v) / 1000; | |
//Serial.print(lux); | |
//Serial.println(" Lux "); | |
delay(100); | |
} | |
void loop() { | |
get_lux(); | |
//SchooMy | |
//プログラムはここからかえます | |
if (lux < 20) { //このエリアになったら | |
count++; //カウントする | |
Serial.print(count); //表示する | |
Serial.println("カウント"); //表示する | |
if (count == 5) { //この数になったら | |
digitalWrite(ledPin, ON); //光る | |
count = 0; //カウントをゼロにもどす | |
} | |
while (lux < 20) { | |
get_lux(); | |
} | |
} else { //それ以外は | |
digitalWrite(ledPin, OFF); //光らない | |
} | |
} |
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