Arduino: For Loops

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Build this Circuit then Implement the Code 470W digital I/O pin 11 void setup(){ pinMode(11, OUTPUT); for(int i=0; i<5; i++) { digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); } void loop() {

These sketches both make the LED blink 5 times without for statement with for statement void setup(){ pinMode(11, OUTPUT); 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() {

How the for statement works 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 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 for(int i=0; i<5; i++) { digitalWrite(11,HIGH); delay(200); digitalWrite(11,LOW); delay(200); }

Incrementing for loops 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,…,22, 21) for(int i=0; i<80; i+=2) { } • increment i by 2 each time (0,2,4,6,…,76,78) for(int i=50; i>=0; i-=5) { } • decrement i by 5 each time (50,45,40,35,…,5,0) for(int i=2; i<100; i=i*1.5) { } • multiply i by 1.5 each time (2,3,4,6,9,13,19,28,42,63,94)

Experiment 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

Click here to get serial monitor to display Play around…ideas for different patterns to display: Click here to get serial monitor to display 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