Nikon D50 intervalometer

Projects General Guidance
1

Hello,

i'm testing Nikon intervalometer but have little problems.
I'm using sketch from this site: Sensor tutorials - IR remote receiver/decoder tutorial
Arduino can trigger my Nikon D50, but not every time. For 10 fotos it makes only 6 or 8. When I connect LED I can see it blink, so Arduino sends impulses.
Camera works fine with ML-L3 Nikon remote control. I also tried different IR leds and different pins, different delays, but with no success.
I don't know what's the problem, so I hope someone can help me to find the solution.

Thanks.

2

What is the time between shots?
Is your memory fast enough to write the shots taken?

3

I tried times from 10 seconds to ten minutes, so I think camera memory is not the problem.

4

Can you trigger the same number of shots in the same interval using the remote from Nikon?

5

Yes, Nikon remote works fine.

6

Do you have an oscilloscope?

7

No, but I tested my remote signal with arduino and IR sensor via serial monitor and it looks like this one in sketch, there are no big differences. I tried also to send IR pulses more times with 50 microseconds delay, but it didn't help either.

8

rednaskellar:
No, but I tested my remote signal with arduino and IR sensor via serial monitor and it looks like this one in sketch, there are no big differences. I tried also to send IR pulses more times with 50 microseconds delay, but it didn't help either.

Hello,

Do you have a solution to your problem? I have the same problem with a Pentax K-x and an AVR-Butterfly.

Greets,
Martin

9

Have you tried Ken Shirriff's fantastic IR library? A Multi-Protocol Infrared Remote Library for the Arduino
I used it before when writing the code for a sensor and remote camera trigger GitHub - nullboundary/Triggertrap: Triggertrap is an universal camera trigger..

If you use his library you can just call the sendRaw() function and input an array of timings. Here is the Nikon code I used in the TriggerTrap

unsigned int MLL3Buffer[] = {2000,27830,390,1580,410,3580,400}; //shutter from: http://www.bigmike.it/ircontrol/
		for (int i = 0; i < 2; ++i) { //send twice
			irsend.sendRaw(MLL3Buffer,7,38); //ML-L3 (Nikon), suppose to be 38.4khz
			delay(63);
		}

If you look in this file, you can find other IR codes used for Pentax or other cameras, around line 700: