// Example 006B: LED brightness chages according to // analog value from sensor const int LED = 9; // pin to LED int val = 0; // variable to store sensor value void setup() { pinMode(LED, OUTPUT); // set LED pin to be OUTPUT Serial.begin(115200); } void loop() { val = analogRead(0); // read sensor value analogWrite(LED, val/4); // set LED brightness by val delay(10); // wait Serial.println(val); delay(100); }