1. LAB1 TYWU

2. Devices Dip Switch (4 Switches) Triple Output LED (RGB) –Common Cathode

3. Specification Controller Luminance (Blink Mode)

4. Photo Arduino

5. Instruction analogWrite –http://www.arduino.cc/en/Reference/AnalogW rite

6. .pde #define SW1 7 #define SW2 6 #define SW3 5 #define SW4 4 #define SW1 7 #define SW2 6 #define SW3 5 #define B 9 // Analog Pin 0 #define G 10 // Analog Pin 1 #define R 11 // Analog Pin 2 #define BLINK_FACTOR 30 // Analog Pin 2

7. .pde int cnt = 0; int luma = 1; void setup() { pinMode(SW1, INPUT); pinMode(SW2, INPUT); pinMode(SW3, INPUT); pinMode(SW4, INPUT); pinMode(B, OUTPUT); pinMode(G, OUTPUT); pinMode(R, OUTPUT); digitalWrite(SW1, HIGH); // turn on pullup resistors digitalWrite(SW2, HIGH); // turn on pullup resistors digitalWrite(SW3, HIGH); // turn on pullup resistors digitalWrite(SW4, HIGH); // turn on pullup resistors Serial.begin(9600); }

8. .pde void loop() { if(digitalRead(SW1)==HIGH) cnt = (cnt + 1) % BLINK_FACTOR; if(digitalRead(SW2)==HIGH) analogWrite(B, luma); else analogWrite(B, 0); if(digitalRead(SW3)==HIGH) analogWrite(G, luma); else analogWrite(G, 0); if(digitalRead(SW4)==HIGH) analogWrite(R, luma); else analogWrite(R, 0); if(cnt == 0 && digitalRead(SW1)==HIGH) luma=luma * 2; if(luma > 128) luma = 1; Serial.print(luma, DEC); Serial.println(""); }

9. Exercise Add another LED Generate the Complement Color of the Original LED