DVD Player LED Display recycling with Arduino Nano, Seven Segment LED Display basics. Pinout 1:47, Arduino code: 4:10, schematics: 2:48, seven segment display internals: 2:11.

What is that music you are hearing?

Thanks vvv hard work

More sci-fi musics, please.

In my display only 7 pins how to interface it

/* Arduino Code from kzfaq.info/get/bejne/ia-nl8yCvt_YYoU.html */ byte segCode[10] = { // abcdefg B1111110, // 0 B0110000, // 1 B1101101, // 2 B1111001, // 3 B0110011, // 4 B1011011, // 5 B1011111, // 6 B1110000, // 7 B1111111, // 8 B1111011 // 9 }; byte symbols[8] = { B1111111, B0111111, B0011111, B0001111, B0000111, B0000011, B0000001, B0000000 }; // g f e d c b a d1 d2 d3 d4 d5(symbols) uint8_t pins[12] = { 8, 7, 6, 5, 4, 3, 2, 9, 10, 11, 12, 13 }; uint16_t digit1, digit2, digit3, digit4; static unsigned long lastMillis; uint16_t counter = 0; void setup() { for(int i = 0; i < 12; i++){ pinMode(pins[i], OUTPUT); // set all 12 pins in array pins[] as output pins digitalWrite(pins[i], HIGH); // set all 12 pins in array pins[] to HIGH state } for(int i = 0; i < 8; i++){ int mask = 1; digitalWrite(pins[11], LOW); // set arduino pin 13 LOW (symbols common cathode pin 12) for(int j = 0; j < 7; j++){ if((mask & symbols[i] ) == 0) digitalWrite(pins[j], LOW); else digitalWrite(pins[j], HIGH); mask = mask