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@loadix
Created August 14, 2020 01:34
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map and constrain
// variable global
int led = 9;
int input = A0;
void setup() {
Serial.begin(9600);
pinMode(led, OUTPUT);
}
void loop() {
// variable local
int ldr = analogRead(input);
int potMap = map(ldr, 253, 912, 0, 255);
int constMap = constrain(potMap, 0, 255);
analogWrite(led, constMap);
Serial.print("ldr:");
Serial.print(ldr);
Serial.print("||");
Serial.print("potMap:");
Serial.print(potMap);
Serial.print("||");
Serial.print("constMap:");
Serial.println(constMap);
delay(5);
}
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