Author Topic: Leaf wetness sensor unwell...  (Read 765 times)

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Offline Bashy

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Leaf wetness sensor unwell...
« on: December 27, 2021, 10:28:04 PM »
Hi folks, it looks like my Leaf wetness sensor is playing up, it surprises me to be honest because there's not a lot to them, but alas, it wont go below 1.3, prior to this it wouldnt go below 0.1 straight after adding WLL, i could live with 0.1 but 1.3 is a bit too much, has anyone heard of this, is this how they end up when dying, please? And is there a Davis equivalent or does it have to be Davis again of which would be typical as they are not one of the cheaper sensors :(

PS, i have scrubbed it clean and pulled out the connector and wipe it just in case, but still the same :(

EDIT: now it wont go below 1.4, oh, it has now but took many hours to get back to 1.3


EDIT: It looks like it's the board that's playing up, I've swapped it over to leaf 2 and that's working OK, swapped it back to leaf 1 and its now at 1.6, it takes hour to drop to 1.3 and then seems to stay at 1.3.


I should mention that it's not actually used as a leaf wetness sensor, it's a rain duration sensor, it's heated, so I know instantly when the rain starts and pretty much when it stops because its heated, it dries it much quicker. So for 1, I know how long the rain session was for and 2, I get alerted the moment the rain starts and stops.

Can the boards be repaired?

Swapped it for another board i had and all working as it was before, just awaiting further info from Davis Support
« Last Edit: January 02, 2022, 09:31:51 PM by Bashy »
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Bashy

Offline Mapantz

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Re: Leaf wetness sensor unwell...
« Reply #1 on: January 02, 2022, 04:31:48 PM »
Hi Bashy

Sorry to ask in here, it was just a coincidence that I was looking for some info on it..

If you use the leaf wetness sensor with a WLL, do you get a higher resolution figure? I only saw increments of 1 in the manual..

Thanks!


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Re: Leaf wetness sensor unwell...
« Reply #2 on: January 02, 2022, 09:28:06 PM »
Hi Bashy

Sorry to ask in here, it was just a coincidence that I was looking for some info on it..

If you use the leaf wetness sensor with a WLL, do you get a higher resolution figure? I only saw increments of 1 in the manual..

Thanks!
Yes, i get (12.1 for example) but also mine starts at 0.1 in WLL when mine is dry, but that could be because i have cut off the smaller section as that wasn't heated as noted in my sig below, the large 0.1...
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Bashy

Offline Mapantz

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Re: Leaf wetness sensor unwell...
« Reply #3 on: January 26, 2022, 10:14:58 AM »

Yes, i get (12.1 for example) but also mine starts at 0.1 in WLL when mine is dry, but that could be because i have cut off the smaller section as that wasn't heated as noted in my sig below, the large 0.1...
OK - My leaf wetness sensor arrived today, which I installed. Dry outside, so 0.1 is registering..

I've read that this sensor can be used to quick notify of rain, dew etc

I've got code in place that will notify me, but I'm wondering at what values I need to check for?


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Re: Leaf wetness sensor unwell...
« Reply #4 on: January 26, 2022, 10:19:08 AM »
I have mine glued to a box with 2 or 3, 12w/5w bulbs on that keeps the leaf sensor warm, therefore mine never has dew, so anything above 0.1 for me is rain
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Bashy

Offline Mapantz

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Re: Leaf wetness sensor unwell...
« Reply #5 on: January 27, 2022, 11:55:56 AM »
I have mine glued to a box with 2 or 3, 12w/5w bulbs on that keeps the leaf sensor warm, therefore mine never has dew, so anything above 0.1 for me is rain

Interesting!

I'm really enjoying having these extra sensors. We had some very fine drizzle earlier, it didn't even wet the ground. The sensor picked up straight away! Now the sky has cleared and the sun has gone down, the air is cooling quickly, moisture is beginning to form and the sensor is marching upward.


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Re: Leaf wetness sensor unwell...
« Reply #6 on: January 27, 2022, 03:28:11 PM »
Mine rarely picks up drizzle due to the heater side of things, I also cut the tacks at the bottom as that area was covered by the box lid, I'm on a bit the lower smaller part of it, I just Stanley knifed the tracks lol. But alas, I am going to let the Davis setup fade away and replace it with ecowitt, not sure I like the leaf sensor though, moght be harder to modify, will have to see, glad it's working well for you :)
Kind regards
Bashy

Offline GlynH

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Re: Leaf wetness sensor unwell...
« Reply #7 on: April 28, 2022, 02:29:34 PM »
I'm looking for a way to add an 'Is It Raining' feature to my Wireless VP2 and had considered the Leaf Sensor.

Is this a reliable way to achieve rainfall start/stop? I know its not a cheap option as one would also need the Leaf/Soil Station which would be wholly underused with just a single Leaf Sensor but if it works seamlessly it might be a price worth paying.

Where would it be best mounted for this particular purpose?

And finally how are the results incorporated into the Davis iOS app and Weatherlink.com for example and can it be set to give rain start/stop alerts?

End of questions... :lol:

Thanks & kind regards,
-=Glyn=-

Offline tandy1000

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Re: Leaf wetness sensor unwell...
« Reply #8 on: April 28, 2022, 10:34:21 PM »
Unfortunately I don't think the leaf sensor accurately represents rain, as it can easily read 15 when it's not raining. Here's some data of the leaf wetness vs the rain rate. A bit hard to see on the graph, but CSV also included of the same data.

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Re: Leaf wetness sensor unwell...
« Reply #9 on: April 29, 2022, 12:42:45 AM »
The leaf can accurately represent rain and can be alerted to it too using the alarms.

Mine does not detect dew as its constantly heated, mine records the 1st instance of rain and then the diy heater dries it a short time later thus signalling that its stopped raining. You can see this on the graphs shown below, this is in late winter, evening time with no sun, by rights the leaf sensor should have stated moisture throughout the whole even and not drying off til much later, perhaps not until the next day.

I use the Weather Display software the does all my alerting for me, if even changes my websites to say rain etc.

The heater. I took the sensor off the original mount. i then cut the tracks to remove the lower smaller section and mounted it to an outside electrical junction box with the top cutout enough that all the tracks would be exposed to the heat. I added 3x 5w 12v bulbs spread out (can be done with one and some foil i spose). Then connected it to a PC psu. thats it. been working for the last what 6 years i think...
« Last Edit: April 29, 2022, 12:44:30 AM by Bashy »
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Bashy

Offline stefanbagnato

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Re: Leaf wetness sensor unwell...
« Reply #10 on: August 03, 2022, 08:17:29 AM »
The leaf can accurately represent rain and can be alerted to it too using the alarms.

Mine does not detect dew as its constantly heated, mine records the 1st instance of rain and then the diy heater dries it a short time later thus signalling that its stopped raining. You can see this on the graphs shown below, this is in late winter, evening time with no sun, by rights the leaf sensor should have stated moisture throughout the whole even and not drying off til much later, perhaps not until the next day.

I use the Weather Display software the does all my alerting for me, if even changes my websites to say rain etc.

The heater. I took the sensor off the original mount. i then cut the tracks to remove the lower smaller section and mounted it to an outside electrical junction box with the top cutout enough that all the tracks would be exposed to the heat. I added 3x 5w 12v bulbs spread out (can be done with one and some foil i spose). Then connected it to a PC psu. thats it. been working for the last what 6 years i think...

Hey Bashy, I am super interested in duplicating your setup.  Do you have any additional details as to how you performed the above?  Or any pictures?  Thanks in advance for anything.

Offline GlynH

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Re: Leaf wetness sensor unwell...
« Reply #11 on: August 03, 2022, 08:22:30 AM »
Does anybody have a screenshot what the Leaf Wetness Sensor might look like in the Davis WeatherLink app for iOS please?

I asked Davis for this some time ago but they weren't able to help...

Thanks & kind regards,
-=Glyn=-

Offline Bashy

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Re: Leaf wetness sensor unwell...
« Reply #12 on: August 03, 2022, 10:01:16 AM »
The leaf can accurately represent rain and can be alerted to it too using the alarms.

Mine does not detect dew as its constantly heated, mine records the 1st instance of rain and then the diy heater dries it a short time later thus signalling that its stopped raining. You can see this on the graphs shown below, this is in late winter, evening time with no sun, by rights the leaf sensor should have stated moisture throughout the whole even and not drying off til much later, perhaps not until the next day.

I use the Weather Display software the does all my alerting for me, if even changes my websites to say rain etc.

The heater. I took the sensor off the original mount. i then cut the tracks to remove the lower smaller section and mounted it to an outside electrical junction box with the top cutout enough that all the tracks would be exposed to the heat. I added 3x 5w 12v bulbs spread out (can be done with one and some foil i spose). Then connected it to a PC psu. thats it. been working for the last what 6 years i think...

Hey Bashy, I am super interested in duplicating your setup.  Do you have any additional details as to how you performed the above?  Or any pictures?  Thanks in advance for anything.

Hi, this will only work if you use Weather Display software.

The setup is very simple, get an outside junction box (just an example, check measurements before you buy), the lid has to be big enough for the leaf sensor to cover it
Cut out a large hole in the lid leaving about 5mm edging so you can hot glue the sensor to it.
I wouldnt worry about that small section at the bottom of the leaf sensor, i cut the tracks to that part, makes no difference anyway.
Now get some of those small 12v bulb holders
and so of the 12v 5w bulbs (exact ones i bought)
Get a 12v PSU (perfect for the job as it includes that green adapter) that can handle 3 bulbs.
Get some 12v cable
Now just devise something to hold the bulbs in the box, i used a metal T piece i think, mecanno is brill for this.


I have it wired up to run 24/7, just don't have the bulbs too close to the sensor, prob leave about 5cm gap.
You will need to replace a bulb now and then, i think the last time i did was about a year, maybe 2 years ago.

But like I said, you need something like WD software to do the website part, basically, in WD you can set the leaf sensor as a rain duration sensor, and it will then change the main screen icon to rain when its raining and been snow but that's hit and miss as its temp dependant, you can fine tune that. Anyhoo, once you have WD doing the weather icon and  current condition, its then replicated in the clientraw file and can that update your website to say its raining exactly at the time you've set it to update, i set my WD to update the clientraw file every 3 seconds, so my site is told pretty much the second it starts to rain.


One thing of note, i chose 3x 5w and not too close to the sensor for a reason and that's so that it does not dry up too quickly, i.e. if its light spits and spot or drizzle, you don't want the sensor to dry to quickly else it will say its Dry when in fact it is raining, that's a trade of though and that's that it will take longer to dry it out when its just normal or heavy rain and it stops. I ain't too keen on that but i prefer it to detect drizzle so i live with it.

Hope this helps...
Kind regards
Bashy

Offline Bashy

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Re: Leaf wetness sensor unwell...
« Reply #13 on: August 03, 2022, 10:01:49 AM »
Does anybody have a screenshot what the Leaf Wetness Sensor might look like in the Davis WeatherLink app for iOS please?

I asked Davis for this some time ago but they weren't able to help...

Thanks & kind regards,
-=Glyn=-

Sorry, i cannot help there, i use Android
Kind regards
Bashy

Offline GlynH

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Re: Leaf wetness sensor unwell...
« Reply #14 on: August 03, 2022, 10:18:06 AM »
Does anybody have a screenshot what the Leaf Wetness Sensor might look like in the Davis WeatherLink app for iOS please?

I asked Davis for this some time ago but they weren't able to help...

Thanks & kind regards,
-=Glyn=-

Sorry, i cannot help there, i use Android

Hi Bashy,

I'd be interested in taking a look at an Android screenshot...guessing app layout is not too far apart?

Just looking for an 'It's raining' solution that integrates nicely and I don't have to jump through hoops for...

Thanks & kind regards,
-=Glyn=-

Offline mcrossley

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Re: Leaf wetness sensor unwell...
« Reply #15 on: August 03, 2022, 10:22:50 AM »
Quote
Hi, this will only work if you use Weather Display software.
Cumulus can use leaf wetness sensors for Is Raining alerts too.  :grin:
Mark

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Re: Leaf wetness sensor unwell...
« Reply #16 on: August 03, 2022, 10:26:14 AM »
Quote
Hi, this will only work if you use Weather Display software.
Cumulus can use leaf wetness sensors for Is Raining alerts too.  :grin:

Does it change the weather Icon as that's wat I'm referring to
Kind regards
Bashy

Offline Bashy

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Re: Leaf wetness sensor unwell...
« Reply #17 on: August 03, 2022, 10:27:42 AM »
Does anybody have a screenshot what the Leaf Wetness Sensor might look like in the Davis WeatherLink app for iOS please?

I asked Davis for this some time ago but they weren't able to help...

Thanks & kind regards,
-=Glyn=-

Sorry, i cannot help there, i use Android

Hi Bashy,

I'd be interested in taking a look at an Android screenshot...guessing app layout is not too far apart?

Just looking for an 'It's raining' solution that integrates nicely and I don't have to jump through hoops for...

Thanks & kind regards,
-=Glyn=-

I don't think it changes to show its raining, it is just a number from 0 (being dry) to 15 (being wet)
Kind regards
Bashy

Offline mcrossley

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Re: Leaf wetness sensor unwell...
« Reply #18 on: August 03, 2022, 10:36:57 AM »
Quote
Hi, this will only work if you use Weather Display software.
Cumulus can use leaf wetness sensors for Is Raining alerts too.  :grin:

Does it change the weather Icon as that's wat I'm referring to

Nope as CMX does not have a interface like WD. But your post was about updating your web site, as CMX changes a flag you can use that to do whatever you want on your web site same as WD.
Mark

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Re: Leaf wetness sensor unwell...
« Reply #19 on: August 03, 2022, 10:55:36 AM »
Quote
Hi, this will only work if you use Weather Display software.
Cumulus can use leaf wetness sensors for Is Raining alerts too.  :grin:

Does it change the weather Icon as that's wat I'm referring to

Nope as CMX does not have a interface like WD. But your post was about updating your web site, as CMX changes a flag you can use that to do whatever you want on your web site same as WD.

Ah that's ok then, at least it can do at least that, i have never used it myself.
Kind regards
Bashy

Offline GlynH

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Re: Leaf wetness sensor unwell...
« Reply #20 on: August 03, 2022, 06:00:21 PM »
Quote
Hi, this will only work if you use Weather Display software.
Cumulus can use leaf wetness sensors for Is Raining alerts too.  :grin:

This will be my next project when I finally get my hands on another Pi 4 4GB but they're as rare as rocking horse poop at the moment.

Used to run Cumulus back in the day and would love to get back into it...

Thanks & kind regards,
-=Glyn=-

Offline stefanbagnato

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Re: Leaf wetness sensor unwell...
« Reply #21 on: August 03, 2022, 08:56:32 PM »
The leaf can accurately represent rain and can be alerted to it too using the alarms.

Mine does not detect dew as its constantly heated, mine records the 1st instance of rain and then the diy heater dries it a short time later thus signalling that its stopped raining. You can see this on the graphs shown below, this is in late winter, evening time with no sun, by rights the leaf sensor should have stated moisture throughout the whole even and not drying off til much later, perhaps not until the next day.

I use the Weather Display software the does all my alerting for me, if even changes my websites to say rain etc.

The heater. I took the sensor off the original mount. i then cut the tracks to remove the lower smaller section and mounted it to an outside electrical junction box with the top cutout enough that all the tracks would be exposed to the heat. I added 3x 5w 12v bulbs spread out (can be done with one and some foil i spose). Then connected it to a PC psu. thats it. been working for the last what 6 years i think...

Hey Bashy, I am super interested in duplicating your setup.  Do you have any additional details as to how you performed the above?  Or any pictures?  Thanks in advance for anything.

Hi, this will only work if you use Weather Display software.

The setup is very simple, get an outside junction box (just an example, check measurements before you buy), the lid has to be big enough for the leaf sensor to cover it
Cut out a large hole in the lid leaving about 5mm edging so you can hot glue the sensor to it.
I wouldnt worry about that small section at the bottom of the leaf sensor, i cut the tracks to that part, makes no difference anyway.
Now get some of those small 12v bulb holders
and so of the 12v 5w bulbs (exact ones i bought)
Get a 12v PSU (perfect for the job as it includes that green adapter) that can handle 3 bulbs.
Get some 12v cable
Now just devise something to hold the bulbs in the box, i used a metal T piece i think, mecanno is brill for this.


I have it wired up to run 24/7, just don't have the bulbs too close to the sensor, prob leave about 5cm gap.
You will need to replace a bulb now and then, i think the last time i did was about a year, maybe 2 years ago.

But like I said, you need something like WD software to do the website part, basically, in WD you can set the leaf sensor as a rain duration sensor, and it will then change the main screen icon to rain when its raining and been snow but that's hit and miss as its temp dependant, you can fine tune that. Anyhoo, once you have WD doing the weather icon and  current condition, its then replicated in the clientraw file and can that update your website to say its raining exactly at the time you've set it to update, i set my WD to update the clientraw file every 3 seconds, so my site is told pretty much the second it starts to rain.


One thing of note, i chose 3x 5w and not too close to the sensor for a reason and that's so that it does not dry up too quickly, i.e. if its light spits and spot or drizzle, you don't want the sensor to dry to quickly else it will say its Dry when in fact it is raining, that's a trade of though and that's that it will take longer to dry it out when its just normal or heavy rain and it stops. I ain't too keen on that but i prefer it to detect drizzle so i live with it.

Hope this helps...

Awesome.  So I assume the heated idea is to help evaporate the dew?  It does not snow often here in NC, so not too worried about that.  My other question would be how do you have it situated?  Is the sensor parallel to the sky?  Or on any angle?  If you have a chance at some point, I'd love a quick cell phone pic of the setup just for visualization.  Thanks again.

Offline stefanbagnato

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Re: Leaf wetness sensor unwell...
« Reply #22 on: Yesterday at 10:36:20 PM »
Bashy, an additional question to my previous one.  I am looking up all the parts on US Amazon.  However, the universal adapter which you linked, you mention that 3 bulbs work with the 'green adapter'?  Since the bulbs are just plugged into pigtails, did you simply stick 3 pigtail red wires in the one side and 3 in the other?  Was there anything else to it?  I can find the US Amazon equivalent, but want to make sure I understand your setup first.

 

anything