Difference between revisions of "LDR Module"
Qian.zhang (talk | contribs) |
(→Introduction) |
||
| (9 intermediate revisions by 2 users not shown) | |||
| Line 3: | Line 3: | ||
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: | + | |
| + | |||
| + | [[File:LDR Module 118101003 first.jpg| 500px]] | ||
| + | |||
| + | [[File:LDR Module 118101003 second.jpg| 500px]] | ||
| + | |||
| + | [[File:LDR Module 118101003 third.jpg| 500px]] | ||
| + | |||
| + | == Features == | ||
| + | |||
| + | Dimensions: 20.0×24.2×10.6mm | ||
| + | |||
| + | Net weight: 1.9g | ||
| + | |||
| + | == Dimension == | ||
| + | |||
| + | [[File:light sensor dimension.jpg]] | ||
==Schematics== | ==Schematics== | ||
| Line 22: | Line 38: | ||
} | } | ||
void loop() { | void loop() { | ||
| − | int sensorValue = analogRead(0); | + | int sensorValue = analogRead(0); //Connect the Linker LDR module to A0, Analog 0 |
float Rsensor; | float Rsensor; | ||
Rsensor=(float)(1023-sensorValue)*10/sensorValue; | Rsensor=(float)(1023-sensorValue)*10/sensorValue; | ||
| Line 38: | Line 54: | ||
} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| + | |||
| + | [[File:LDR link.jpg]] | ||
==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] | ||
Latest revision as of 10:34, 18 July 2016
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.
Features
Dimensions: 20.0×24.2×10.6mm
Net weight: 1.9g
Dimension
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); //Connect the Linker LDR module to A0, Analog 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
