Author Topic: Rf motion detector to trigger Trail cameras  (Read 1561 times)

Macka

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Rf motion detector to trigger Trail cameras
« on: October 29, 2015, 12:09:46 AM »
Hello first off I'd like to say I'm a newbie to this technology but find it very very fascinating , I say to people "it took me many years to learn how to build a house" so please go easy.

Anyway is it possible to use an Rf motion detector and base to trigger a trail camera as in replacing the cameras on board PIR sensor , I know this is a very basic question to some of you but I would appreciate any help steering me in the right direction.

The reason for the application is to place such a unit on my land which is barren of trees (dessert Australia) and catch the b******s who are helping themselves to my property .. (I work 200 miles away in the city)  :)

There is no ac on site so I'm looking at covert and maybe disguise the motion detector as a rock with the camera a distance away for wider angle and not get pinched.

There are commercial based products but they are WAY too pricey , anyway I would appreciate any help on this topic .

Kind Regards
Macka 

Felix

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Re: Rf motion detector to trigger Trail cameras
« Reply #1 on: October 29, 2015, 10:08:40 AM »
Anyway is it possible to use an Rf motion detector and base to trigger a trail camera as in replacing the cameras on board PIR sensor , I know this is a very basic question to some of you but I would appreciate any help steering me in the right direction.
Hi Macka,
Interesting application!
The PIR detection side is easy. However you should note that you may need to tweak the PIR sensitivity to get motion detected at a longer distance and even so you might not get a long range, these are intended for indoors in general where there's a steady infrared heat map that doesn't change with wind and other factors that might trigger motion. Otherwise you might get false positives which could be OK in your case but you'd want to limit that to a minimum.
The camera side .. would need to have some kind of trigger mechanism that wakes it up and snaps a photo. A receiving Moteino that sleeps everything but the radio in RX mode (to receive a SNAP command from the Motion Moteino) could do that if your camera has some kind of digital triggering mechanism.
Then I assume your camera would have its own battery, and the Moteino that triggers it would have another battery as well. A Moteino with radio in RX (listen) mode will take about 15mA, so the battery capacity is the only limiter to how long it will last. Perhaps you could use a solar charger to give that battery a boost during the day, but that would be an enhancement i'd be focusing only after you get it working without it.

It's an ambitious project especially if you're new at "building houses" but it could be very rewarding if you ever do catch the b******s on camera.

To give you more guidance we would need more details about the camera side and how it could be triggered.

Also take a look at this other project that used PIRs to detect a real burglary.

luisr320

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Re: Rf motion detector to trigger Trail cameras
« Reply #2 on: November 03, 2015, 08:19:35 AM »
PIRs on the outdoors will give you a lot of false triggers. You should consider some type of sensor with multiple tecnology, like PIR, MICROWAVE and Detection analysis, like this one http://homeprotect.me/shop/triple-tech-pir-motion-detector. They are a bit pricie biut they work very well on the outdoors. The one I'm pointing is just an exemple of the type and not a suggestion for a solution. They are not very lean when it comes to current consumption, though.

Luis

Felix

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Re: Rf motion detector to trigger Trail cameras
« Reply #3 on: November 03, 2015, 11:38:35 AM »

Macka

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Re: Rf motion detector to trigger Trail cameras
« Reply #4 on: November 23, 2015, 04:15:39 PM »
Thanks for the reply and info folks an yes it is ambitious considering I am somewhat fresh to this tech , however  to get a boost up I have met a couple of young enthusiastic lads who are keen to lend a hand to which I am grateful.  I will endeavor to post any updates , once again thank you..