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PostPosted: Mon Jan 22, 2018 8:25 pm 
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This is a great idea. Two different sensors (active and passive IR) to eliminate false triggers to save battery life and increase usable images.

[quote="Gartooth"]That could be done. Could run output from an onboard PIR to transistor to control power to AIR. Would solve the power issue and help with false trigger (although it never rains or snows here). :-).

With dip switches, one could also control sensor combos as one, other, or both.

Hmm... You could put the PIR on both units for overlapping protection and maximum battery savings, or just put it on the main battery hog- the AIR transmitter.

Attachment:
Arduino Pro Mini Wireless AIR PIR Transmitter Circuit.png


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PostPosted: Mon Jan 22, 2018 9:36 pm 
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The Thanks for the instructible Stinky! Well done.

The PIR AIR combo is JonnyA’s brainchild, I think I might try to build. :-)

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PostPosted: Mon Jan 22, 2018 10:09 pm 
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I'll dust off the soldering iron and get back into coding. I've found some better IR sensors, I just need to work out the power requirements.

Gartooth wrote:
The Thanks for the instructible Stinky! Well done.

The PIR AIR combo is JonnyA’s brainchild, I think I might try to build. :-)


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PostPosted: Tue Jan 23, 2018 1:13 am 
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Hi guys,

if using Arduino I'd recommend to use the Pro Mini Series. When cutting the LED I get it to <1mA when in sleep mode (https://github.com/rocketscream/Low-Power)

Good luck with it!

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PostPosted: Tue Jan 23, 2018 6:35 am 
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APM is what I’m using on these. Great little units.

Have you tried any of the low power mode codes? Evidently can get them exceptionally

https://youtu.be/urLSDi7SD8M

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PostPosted: Tue Jan 23, 2018 8:52 am 
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The video is exactly what the library does - just without frontend interface with methods for devoloping.
Works great for me, but i'm struggeling with the rest of electonics. Thos cheap PIR are too sensitive for what I need and beam breaks are hard to develop when you want them pulsing to reduce the power.

How far did you get?

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PostPosted: Tue Jan 23, 2018 9:36 am 
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I have not dived in to the AIR/PIR build yet, but will soon. In theory it works.

Are the false triggers the problem you are encountering with PIR’s?

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PostPosted: Tue Jan 23, 2018 1:02 pm 
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I have false triggers with both, PIR and AIR. For PIR it is moving leaves, the sun and so on, for AIR i have problems with rain and snow.

Trailmasters AIR i.e. us a pulsed IR beam with like 50ms off, 1ms on to make sure the beam is broken for longer then 50ms before it triggers the camera.

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PostPosted: Tue Jan 23, 2018 1:36 pm 
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Maybe could write a qualifier into the sketch.
For a normally high input, something like-

If input=low
Delay 50
Then
if input=low execute

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PostPosted: Tue Jan 23, 2018 4:44 pm 
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JonnyA wrote:
Nice work! Excited to hear how it works out.

Do you think it would work to add a PIR and only turn on the IR emitter after the PIR detects motion, maybe for a 1 min. period? I was thinking this could be a solution to the power consumption of active IR and the issue that some of them have with rain/snow/bugs causing false triggers. If I could make my Eltima Jokie units sip power and not false in rain they would be the perfect trigger.

cheers
Jonny


I did something like this for a rig I built to photograph flying squirrels using a Cognisys RangeIR as my trigger. One or more PIRs wirelessly wake up an Arduino controlled "brain" that then warms up the flashes and keeps the camera shutter open. After 90 seconds, it all goes back to sleep. Worked great, but only a dumb elk showed up last season (flying squirrels are really rare here).


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