HaSch
Published © GPL3+

Bluetooth controlled camera shutter

Tired of standing beneath your camera while shooting photos? Why don’t you use your smartphone to focus and release the shutter?

BeginnerFull instructions provided1 hour685
Bluetooth controlled camera shutter

Things used in this project

Hardware components

LightBlue Bean
Punch Through LightBlue Bean
×1
Sharp optocoupler PC357NT (4-pin Mini-flat package SMD, it’s small and doesn’t need too much space on the Bean’s prototyping area)
×2
Camera specific cable
×1
Jack responsing to your camera specific cable, I used 2,5mm audio jack
×1
Li-Ion Battery 100mAh
Li-Ion Battery 100mAh
×1

Software apps and online services

Punch Through LightBlue Explorer

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)

Story

Read more

Schematics

Fritzing schematic

Code

LightBlue Shutter

Arduino
/* 
  LightBlue Shutter - Sandbox 
  
  Shutter Pin Connections:
  FOCUS: 1
  RELEA: 0
*/
  
/*************************************************************************/
/* Defines */
/*************************************************************************/
#define FOCUS_TIME_MS    400 //change here if your camera needs a longer or
#define RELEA_TIME_MS    300 //a shorter time to focus or to release
  
/*************************************************************************/
/* Pin Defines */
/*************************************************************************/
// Shutter Controller
int FOCUS = 0; //Focus 
int RELEA = 1; //Release

/*************************************************************************/
/* Global Variables */
/*************************************************************************/
void setup(){
  Serial.begin(57600);  
  Serial.setTimeout(25);
  
  // Shutter Setup
  pinMode(FOCUS, OUTPUT);
  digitalWrite(FOCUS,LOW);
  pinMode(RELEA, OUTPUT);
  digitalWrite(RELEA,LOW);
 }
 
/*************************************************************************/
/* Main Loop */
/*************************************************************************/
void loop(){
  char buffer[10];
  size_t length = 2;
  
  
  buffer[0] = 0;
  length = Serial.readBytes(buffer, length); 
  
  if( length > 1 ){
        if( (buffer[0] == 13) && (buffer[1] == 0) ){
		      focus(); //focus
	      }
        if( (buffer[0] == 14) && (buffer[1] == 0) ){
		      relea(); //release
	      }
  } 
  Bean.sleep(0xFFFFFFFF); // Sleep until a serial message wakes us up
}

/*************************************************************************/
/* Focus function */
/*************************************************************************/
void focus(void){
   digitalWrite(FOCUS, HIGH); //focus
   Bean.setLed(255,0,0);      //turn on LED (red)
   delay(FOCUS_TIME_MS);
   digitalWrite(FOCUS, LOW); //focus stop
   Bean.setLed(0,0,0);       //turn off LED
  }
  
/*************************************************************************/
/* Release function */
/*************************************************************************/
void relea(void){
   digitalWrite(RELEA, HIGH); //release
   Bean.setLed(0,255,0);      //turn on LED (green)
   delay(RELEA_TIME_MS);
   digitalWrite(RELEA, LOW); //release stop
   Bean.setLed(0,0,0);       //turn off LED
  }
  
/*************************************************************************/

Credits

HaSch

HaSch

1 project • 3 followers

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