1. using for loops to control LEDs living with the lab 1 1 arduino.cc the for statement allows us to repeat a block of commands a limited number of times © 2012 David Hall

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3. build this circuit (or just use the built-in LED on pin 13) 470  digital I/O pin 11 living with the lab 3 digital pin 11

4. void setup(){ pinMode(11, OUTPUT); digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); } void loop() { } void setup(){ pinMode(11, OUTPUT); for(int i=0; i<5; i++) { digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); } void loop() { } living with the lab 4 these sketches both make the LED blink 5 times without for statementwith for statement

5. for(int i=0; i<5; i++) { digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); } declare i as an integer (a number that can vary between -32,768 and 32,767) the first value of i will be zero continue to loop as long as i is less than 5 increment i each time through loop how the for statement works living with the lab 5 i=0 the first time through loop i=1 the second time through loop i=2 the third time through loop i=3 the fourth time through loop i=4 the fifth time through loop

6. incrementing for loops living with the lab 6 for(int i=0; i<5; i++) { } - increment i by one each time (0,1,2,3,4) for(int i=100; i>20; i--) { } - decrement i by one each time (100,99,98,…) for(int i=0; i<80; i+=2) { } - increment i by 2 each time (0,2,4,6,…) for(int i=50; i>=0; i-=5) { } - decrement i by 5 each time (50,45,40,…) for(int i=2; i<100; i=i*1.5) { } - multiply i by 1.5 each time (2,3,4,6,9,13,…)

7. living with the lab 7 play around with incrementing and decrementing for loops void setup() { Serial.begin(9600); for(int x=0; x<100; x++) { Serial.println(x); } void loop() { } send output to serial monitor

8. living with the lab 8 Try to display these patterns: 1,2,3,…100 100,99,98,…-27 0,3,6,9,…69 1000,950,900,…50 1,2,4,8,16,…1024 1024,512,256,…1 1,4,9,16,25,…100