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| int LED = 13; // the pin for the LED | |
| int BUTTON = 7; // the input pin where the pushbutton is connected | |
| int val = 0; // val will be used to store the state of the input pin | |
| int delay_time = 1000; | |
| void setup() { | |
| pinMode(LED, OUTPUT); // tell Arduino LED is an output | |
| pinMode(BUTTON, INPUT); // and BUTTON is an input | |
| } | |
| void loop() { | |
| while (delay_time > 0) { | |
| val = digitalRead(BUTTON); // check if the input is HIGH (button pressed) | |
| delay(delay_time); | |
| digitalWrite(LED, LOW); | |
| delay(delay_time); | |
| // if the button is pressed.. | |
| if (val == HIGH) { | |
| delay_time = delay_time - 1; | |
| } | |
| } | |
| digitalWrite(LED, HIGH); | |
| } | |
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