I want to photograph wild life at night with my d5100. For this i would like to interface an IR beam the camera via a potential free contact or a optocoupler. The other challenge is to power the camera and equipment off a 12V battery. Has any one done this, or part of this? Kind regards, Donald.
Hi, i found that the EP-5A Power Connector and the AC Adapter EH-5B will supply power to the d5100 continuously. This solves my second problem if there is AC power available. I was contemplating buying a pirate battery (i have seen warnings that this in not a good idea as they fail) and making a voltage regulator board to supply the required power and mounting it inside a battery case with a cable to the 12V battery. Has any one seen this done?
Nikon does not make an IR remote control that includes an interrupt trigger for the D5100. There is the ML3 for the more advanced Nikon dSLRs that interfaces through the wired trigger control so the camera can goto sleep and the IR remote will wake the camera when the IR beam from the transmitter is interrupted.
The IR for the D5100 has a time out feature so the ML-L3 or similar remote would not work.
You might look for a 3rd party product that uses the wired remote port of the D5100 and can trip the focus and then the shutter release. This would allow your camera to sleep between camera shots.
Hi George, thanks for that. I looked up the ML3 remote trigger and it would be ideal except that it is for the 10 pin connector. My camera, the d5100 does not have the 10 pin connector. Is there an adapter from this 10 pin connector for the d5100?
Hi George, it took me some time to digest the information you gave me, thanks a lot. The websites were most helpful. I have a constraint with $ (money) and being in South Africa the exchange is against me. With this in mind I went down to the local electronics shop and bought some IR diodes and Photo transistors. I intend on making my own IR beams. What I want is a simple system just to trigger the Camera, of course this may grow. I think for the cable I will buy one of those cheep wired remotes and hack that.
I Have been doing some development of this idea. i built a transmitter and receiver circuit with limited success. i found this link http://pcbheaven.com/circuitpages/Long_Range_IR_Beam_Break_Detector/?p=0 The advantage of this is that it will use a lot less current than i was wanting anticipating, because it has a timer that only transmits a signal with a low duty cycle. When i get the spares and build it i will give a report on how it works.