Difference between revisions of "8 Lets measure the light in the room with LDR"
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[[Category:Arduino Tutorials]] | [[Category:Arduino Tutorials]] | ||
[[File:Arduino Interface LDR.JPG|680px]] | [[File:Arduino Interface LDR.JPG|680px]] | ||
+ | ====Code==== | ||
<syntaxhighlight> | <syntaxhighlight> | ||
/* | /* | ||
Blink | Blink | ||
− | Turns on an LED on | + | Turns on an LED on , then off , repeatedly according to the Light. |
This example code is in the public domain. | This example code is in the public domain. | ||
Line 10: | Line 11: | ||
// Pin 13 has an LED connected on most Arduino boards. | // Pin 13 has an LED connected on most Arduino boards. | ||
+ | // LDR is connected as shown in Diagram. | ||
// give it a name: | // give it a name: | ||
int led = 13; | int led = 13; |
Revision as of 23:49, 12 September 2014
Code
/* Blink Turns on an LED on , then off , repeatedly according to the Light. This example code is in the public domain. */ // Pin 13 has an LED connected on most Arduino boards. // LDR is connected as shown in Diagram. // give it a name: int led = 13; // the setup routine runs once when you press reset: void setup() { // initialize the digital pin as an output. pinMode(led, OUTPUT); } // the loop routine runs over and over again forever: void loop() { digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(led, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second }