Tasks first set 1-12

Tasks


5) Make the blink twice as slow:
[...]
//make led blink on for 2s and off for 2s
digitalWrite(led, HIGH);
delay(2000);
digitalWrite(led, LOW);
delay(2000);
[...]
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6) Make the LED blink fast
[...]
//make the led turn on for (50ms) and off (50ms)

digitalWrite(led, HIGH);

delay(50); //this is quite fast but still visible.

digitalWrite(led, LOW);

delay(50);

/*if the program was delayed for 9 milli seconds it would look like the led is solid on. */

[...]

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7) Get led to stay on mostly then flash off.

[...]

digitalWrite(led, HIGH);

delay(10000); //stay on for 10 seconds

digitalWrite(led, LOW);

delay(100); //flash off for 100ms

[...]

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8) Now the other way around from '7'

[...]

digitalWrite(led, HIGH);

delay(100); // illuminate for 100ms

digitalWrite(led, LOW);

delay(10000); //stay off for 10 sec

[...]

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9) What has LEDs

iPods, computers (eg HDD activity), the arduino, network hubs/switches, tv.

Some cordless phones detect whether there is a message and makes a LED light up for 500ms every 4 seconds.

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10) I have downloaded Fritzing

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11) I have made a Fritzing diagram for the 7-Segment LED display

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12) Fritzing project

A RGB colour mixer looks interesting by getting different colours to change by using a potentiometer. 

HERE: http://fritzing.org/projects/rgb-led-mixer/