| /** | |
| Use 5 LEDs to display the binary form of a number received over serial | |
| 09 MAY 2025 by Blind Author | |
| */ | |
| const int ledPins[5] = {2, 4, 5, 12, 13}; | |
| void setup() { | |
| Serial.begin(9600); | |
| for (int i = 0; i < 5; i++) { | |
| pinMode(ledPins[i], OUTPUT); | |
| } | |
| } | |
| void loop() { | |
| if (Serial.available() > 0) { | |
| int number = Serial.parseInt(); | |
| while (Serial.available()) { | |
| Serial.read(); | |
| } | |
| for (int i = 0; i < 5; i++) { | |
| int bitValue = (number >> i) & 1; | |
| digitalWrite(ledPins[i], bitValue); | |
| } | |
| Serial.print("Binary of "); | |
| Serial.print(number); | |
| Serial.print(" is: "); | |
| for (int i = 4; i >= 0; i--) { | |
| Serial.print((number >> i) & 1); | |
| } | |
| Serial.println(); | |
| } | |
| } | |