Sensor + Interrupt questions
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nice :)
I ordered a couple of sensors yesterday so as soon as they come in ill start doing some testing with them.
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I have a similar (same?) sensor type running on a Pro mini.
I uses a PNP to gain up the sensor current and ran it into INT1 . My RFM69 uses INTO.Works perfect. I've been running it on 3 AAA *** Carbon! batteries for a few months to see how long the batteries work. I can't yet estimate the battery life because I'm using the internal measurement of Vcc (which goes through the regulator).
John
*** updated, the original post stated 2 AAA batteries. This was in error.
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@CrankyCoder
For sensors I'm using 4 stainless steel screws extending out the bottom of a plastic housing. They are spaced at the corners of a 5/8 square. I tested it with 2 screw and it worked fine but I went with 4 for the extra sense current.@gohan,
I'm using 3 AAA batteries, my 2 AAA carbon battery statement was in error. When fresh the voltage exceeds the RFM69 input voltage specification.John
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Hi CrankyCoder,
I have door/window sensors running using interruptions. I got rid of the regulator and the power led and I am using a step up converter to take as much juice as possible from the batteries. The oldest node has been running for a year already on 2 AA batteries so your project is definitely doable.
The problem could be in case the leak sensor throws a lot of false positives in which case it would drain the battery quicker.
I hope it helps.
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David
[http://www.smarthomeblog.net] -
Hi CrankyCoder,
I have door/window sensors running using interruptions. I got rid of the regulator and the power led and I am using a step up converter to take as much juice as possible from the batteries. The oldest node has been running for a year already on 2 AA batteries so your project is definitely doable.
The problem could be in case the leak sensor throws a lot of false positives in which case it would drain the battery quicker.
I hope it helps.
--
David
[http://www.smarthomeblog.net]@david-cabañero Thanks David, i just got a few of the step ups so I will give that a shot. Because of some of my other projects I have TONS of 18650 cells laying around so I figure those are decent batteries for this.
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no, i have a couple that i am running at 3.3 off the 18650s. so far it's been pretty good just using the sleep
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Hi @CrankyCoder ,
I think that 18650 will have plenty of juice for a project like this one.
Do you have an idea on how much does the water sensor consume in sleep mode? I am curious and I might actually go for the same project.
Which one are you using?
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not sure about in sleep mode. But here is the sensor i am using.
https://smile.amazon.com/gp/product/B00Q9YBIJI/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
