Difference between revisions of "LDR Module"
Qian.zhang (talk | contribs) |
Qian.zhang (talk | contribs) |
||
| Line 1: | Line 1: | ||
==Introduction== | ==Introduction== | ||
| + | |||
The light sensor, also known as the light dependent resistor (LDR). Typically, the resistance of the light sensor will decrease when the ambient light intensity increases. | The light sensor, also known as the light dependent resistor (LDR). Typically, the resistance of the light sensor will decrease when the ambient light intensity increases. | ||
[[File:Linker ldr.jpg |400px]] | [[File:Linker ldr.jpg |400px]] | ||
| + | |||
| + | ==Schematics== | ||
| + | |||
| + | *[https://s3.amazonaws.com/linksprite/LinkerKit/Light+sensor.pdf Schematics] | ||
==Application Ideas== | ==Application Ideas== | ||
| + | |||
''' test code ''' | ''' test code ''' | ||
<syntaxhighlight lang="c"> | <syntaxhighlight lang="c"> | ||
| Line 32: | Line 38: | ||
} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | |||
| − | |||
| − | |||
| − | |||
==How to buy== | ==How to buy== | ||
Here to buy LRD Module on [http://store.linksprite.com/ldr-ambient-light-module-of-linker-kit-for-pcduino-arduino/ store] | Here to buy LRD Module on [http://store.linksprite.com/ldr-ambient-light-module-of-linker-kit-for-pcduino-arduino/ store] | ||
Revision as of 09:07, 8 April 2014
Introduction
The light sensor, also known as the light dependent resistor (LDR). Typically, the resistance of the light sensor will decrease when the ambient light intensity increases.
Schematics
Application Ideas
test code <syntaxhighlight lang="c">
- include <math.h>
const int ledPin=12; //Connect the Linker LED module to Pin12, Digital 12 const int thresholdvalue=10; //The treshold for which the LED should turn on. Setting it lower will make it go on at more light, higher for more darkness
void setup() {
Serial.begin(9600); //Start the Serial connection pinMode(ledPin,OUTPUT); //Set the LED on Digital 12 as an OUTPUT
} void loop() {
int sensorValue = analogRead(0);
float Rsensor;
Rsensor=(float)(1023-sensorValue)*10/sensorValue;
if(Rsensor>thresholdvalue)
{
digitalWrite(ledPin,HIGH);
}
else
{
digitalWrite(ledPin,LOW);
}
Serial.println(Rsensor,DEC);
} </syntaxhighlight>
How to buy
Here to buy LRD Module on store
