查看“Time-lapse Photography”的源代码

{{Language| Time-lapse Photography}}
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==Objective ==
Use the key to set the time delay and take pictures with SONY camera after the setting.

==Principle==
Here we can set the time delay by detecting how many times you press the key and use the infrared transmission sensor to control SONY camera. 

==Equipment ==
{|class="wikitable"
|-
|Module||Number||Function
|-
|[[Microduino-CoreUSB]]||1||Core board
|-
|[[Microduino-Sensorhub]]||1||Sensor pin board 
|-
| [[Microduino-IR transmitter]]||1||Infrared transmission sensor 
|-
| [[Microduino-Crash]]||1||Crash sensor 
|}
 [[File:IR_Crash.jpg|600px|center|thumb]]


==Hardware Buildup ==
*Setup 1：Stack CoreUSB and Sensorhub together.。
[[File:CoreUSB_Sensorhub.jpg|600px|center|thumb]]
*Setup 2：Connect the infrared transmitter to the D8 pin of Sensorhub and the crash sensor to the D2 pin of Sensorhub. 
[[file:Microduino-sensorhub_rule.JPG|thumb|800px|center]]
[[File:ir_transmitter.jpg|600px|center|thumb]]

==Software Debugging软件调试==
*Infrared remote control encoding definition. Here we adopt SONY encoding format. 
<source lang="cpp">

#define PHOTO 0xB4B8F     //SONY camera ending 
#define KEY 2             //Key interface

boolean keyFlag = false;  //Key flag  
unsigned long timeFlag = 0;   //Time flag 
int delayTime = 0;

IRsend irsend;
</source>
[[File:Microduino_photo_ir.png||300px|center|thumb]]
*Judge how many time you press the key. If you can't detect the next press-down within one second of the last press-down, it means you've finished pressing down. Then, after delaying for a certain period of time, it'll send photo encoding and control the camera to take photos. 

<source lang="cpp">
  if((millis()> timeFlag+1000)&&delayTime>0)     // Judge how many time you press the key. If you can't detect the next press-down within one second of the last press-down, it means you've finished pressing down.
  {
    delay(delayTime*1000);                      //Set the delay time according to how many times you press down.

    for (int i = 0; i < 3; i++) 
    {
      irsend.sendSony(PHOTO, 20);               //Send photographing instruction 
      delay(10);
    }
    Serial.println("take photo"); 
    delayTime = 0; 
  }
  
  if(keyFlag==false && digitalRead(KEY)==LOW)   //Judge if the key is pressed down. 
  {
    keyFlag = true;
  }
  else if(keyFlag==true && digitalRead(KEY)==HIGH)    //Judge if the key is released. 
  {
    delayTime++;                            //The time of pressing the key+1
    timeFlag = millis();
    keyFlag=false;
  }
  delay(100);
</source>

==Program==
[[https://github.com/Microduino/Microduino_Tutorials/tree/master/MCookie_Tutorial/MicroduinoDelayPhoto MicroduinoDelayPhoto]]

==Result==
Align the infrared transmission sensor to the infrared receiving head of the camera, set remote control mode, press the key for several times and then take pictures after a while.

==Video==

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