Arduino Pin |
7 Segment Pin Connection |
2 |
7(A) |
3 |
6(B) |
4 |
4(C) |
5 |
2(D) |
6 |
1(E) |
7 |
9(F) |
8 |
10(G) |
9 |
5(DP) |
void setup() { pinMode(2, OUTPUT);pinMode(3, OUTPUT); pinMode(4, OUTPUT); pinMode(5, OUTPUT); pinMode(6, OUTPUT); pinMode(7, OUTPUT); pinMode(8, OUTPUT); pinMode(9, OUTPUT); digitalWrite(9, 0); // start with the "dot" off } void loop() { // write '9' digitalWrite(2, 1); digitalWrite(3, 1); digitalWrite(4, 1); digitalWrite(5, 0); digitalWrite(6, 0); digitalWrite(7, 1); digitalWrite(8, 1); delay(1000); // write '8' digitalWrite(2, 1); digitalWrite(3, 1); digitalWrite(4, 1); digitalWrite(5, 1); digitalWrite(6, 1); digitalWrite(7, 1); digitalWrite(8, 1); delay(1000); // write '7' digitalWrite(2, 1); digitalWrite(3, 1); digitalWrite(4, 1); digitalWrite(5, 0); digitalWrite(6, 0); digitalWrite(7, 0); digitalWrite(8, 0); delay(1000); // write '6' digitalWrite(2, 1); digitalWrite(3, 0); digitalWrite(4, 1); digitalWrite(5, 1); digitalWrite(6, 1); digitalWrite(7, 1); digitalWrite(8, 1); delay(1000); // write '5' digitalWrite(2, 1); digitalWrite(3, 0); digitalWrite(4, 1); digitalWrite(5, 1); digitalWrite(6, 0); digitalWrite(7, 1); digitalWrite(8, 1); delay(1000); // write '4' digitalWrite(2, 0); digitalWrite(3, 1); digitalWrite(4, 1); digitalWrite(5, 0); digitalWrite(6, 0); digitalWrite(7, 1); digitalWrite(8, 1); delay(1000); // write '3' digitalWrite(2, 1); digitalWrite(3, 1); digitalWrite(4, 1); digitalWrite(5, 1); digitalWrite(6, 0); digitalWrite(7, 0); digitalWrite(8, 1); delay(1000); // write '2' digitalWrite(2, 1); digitalWrite(3, 1); digitalWrite(4, 0); digitalWrite(5, 1); digitalWrite(6, 1); digitalWrite(7, 0); digitalWrite(8, 1); delay(1000); // write '1' digitalWrite(2, 0); digitalWrite(3, 1); digitalWrite(4, 1); digitalWrite(5, 0); digitalWrite(6, 0); digitalWrite(7, 0); digitalWrite(8, 0); delay(1000); // write '0' digitalWrite(2, 1); digitalWrite(3, 1); digitalWrite(4, 1); digitalWrite(5, 1); digitalWrite(6, 1); digitalWrite(7, 1); digitalWrite(8, 0); delay(4000); } |
byte seven_seg_digits[10][7] = { { 1,1,1,1,1,1,0 }, // = 0 { 0,1,1,0,0,0,0 }, // = 1{ 1,1,0,1,1,0,1 }, // = 2 { 1,1,1,1,0,0,1 }, // = 3 { 0,1,1,0,0,1,1 }, // = 4 { 1,0,1,1,0,1,1 }, // = 5 { 1,0,1,1,1,1,1 }, // = 6 { 1,1,1,0,0,0,0 }, // = 7 { 1,1,1,1,1,1,1 }, // = 8 { 1,1,1,0,0,1,1 } // = 9 }; void setup() { pinMode(2, OUTPUT); pinMode(3, OUTPUT); pinMode(4, OUTPUT); pinMode(5, OUTPUT); pinMode(6, OUTPUT); pinMode(7, OUTPUT); pinMode(8, OUTPUT); pinMode(9, OUTPUT); writeDot(0); // start with the "dot" off } void writeDot(byte dot) { digitalWrite(9, dot); } void sevenSegWrite(byte digit) { byte pin = 2; for (byte segCount = 0; segCount < 7; ++segCount) { digitalWrite(pin, seven_seg_digits[digit][segCount]); ++pin; } } void loop() { for (byte count = 10; count > 0; --count) { delay(1000); sevenSegWrite(count - 1); } delay(4000); } |
주의
반대일 수도 있음
byte seven_seg_digits[10][7] = { { 0,0,0,0,0,0,1 }, // = 0
{ 1,0,0,1,1,1,1 }, // = 1
{ 0,0,1,0,0,1,0 }, // = 2
{ 0,0,0,0,1,1,0 }, // = 3
{ 1,0,0,1,1,0,0 }, // = 4
{ 0,1,0,0,1,0,0 }, // = 5
{ 0,1,0,0,0,0,0 }, // = 6
{ 0,0,0,1,1,1,1 }, // = 7
{ 0,0,0,0,0,0,0 }, // = 8
{ 0,0,0,1,1,0,0 } // = 9
};
