Intervalometer for Sony NEX 5n

Step 3: Assembling

Circuit is powered by 9V battery. Battery positive output connected to the input Vin Arduino. Arduino has a built-5V voltage converter that we need to power the Serial LCD. The anode of the IR LED is connected through current limiting resistor and connected to 10-pin Arduino. Cathode of the IR LED connected to GND.

I use resistor ~200 Ohm, you can calculate it via on-line LED Calculator

Step 4: Software

To save battery life in the software has a function the LCD backlight off. When you press any key, the LCD backlight turn on.

Source Code:

// Article http://english.cxem.net/arduino/arduino6.php
// Version 1.0

#include “Wire.h”
#include “LiquidCrystal_I2C.h”

#define axis_X 0    // axis X of Joystic connected to Analog 0
#define axis_Y 1    // axis Y of Joystic connected to Analog 1
#define axis_Z 2    // axis-button Z of Joystic connected to Digital 2
#define pinIRLED 10 // IR LED
#define LEDgreen 13 // onboard LED

#define autoOFF 10  // autoOFF backlight LCD

LiquidCrystal_I2C lcd(0x27,16,2);    // set the LCD address to 0x27 for a 16 chars and 2 line display

int value_X, value_Y, value_Z = 0;   // axis values
int pos = 0;                         // current position (0 – delay, 1 – work)
int interval = 1;                    // pause between shots (sec)
int cntPict = 0;                     // shots count
boolean working = false;

unsigned long currentTime;
unsigned long TimeShot, TimeLCDOff;

void setup()
{
pinMode(axis_Z, INPUT);         // Joystic button
pinMode(pinIRLED, OUTPUT);      // IR LED

lcd.init();                     // init LCD
lcd.backlight();                // turn LCD backlight ON
lcd.clear();                    // clear LCD
show_menu();                    // function show menu

currentTime = millis();
TimeShot = currentTime;         // shots timer
TimeLCDOff = currentTime;       // backlight timer
//Serial.begin(115200);
}

For more detail: Intervalometer for Sony NEX 5n