neilh20 – EnviroDIY

neilh20 replied to the topic Artifactual troughs and flickers in recorded stream depth in the forum Monitor My Watershed 4 days, 7 hours ago

@d_manning just wondering if you have had any insights 🙂
neilh20 replied to the topic Artifactual troughs and flickers in recorded stream depth in the forum Monitor My Watershed 1 months, 1 weeks ago

I did some blog posts in 2016 with a number of depth sensors that quoted an error for a very wide temperature compensation. They where the Insitu LT500 (best), Keller Nanolevel, Keller Acculevel, Keller Level gage (worst).

I setup a situation with the depth sensors in a jar of water (low depth) with a good solar aspect to test how well they met…[Read more]
neilh20 replied to the topic Artifactual troughs and flickers in recorded stream depth in the forum Monitor My Watershed 1 months, 1 weeks ago

As you say from 2nd sept – something changed, after that it looks to me like its is triggered by the temperature changes. Its just a visual analysis, but also using the conductivity. With a rain event the conductivity also typically changes, and of course temperature can change.

For daily diurnal cycle after sept 2 the temperature starts varying…[Read more]
neilh20 replied to the topic Artifactual troughs and flickers in recorded stream depth in the forum Monitor My Watershed 1 months, 1 weeks ago

Just wondering if you could post a link to where the data is being collected, and look at it as a system.
neilh20 replied to the topic New Xbee Modem: XB3-C-GM1-UT-001 in the forum Mayfly Data Logger 1 months, 3 weeks ago

Oh interesting, Thanks for sharing, Sounds like it connected some of the time, showing that it was possible to connect. I’ve found there are four source of failure – setup to cell tower, TCP/IP setup, POST ack, MMW timeout,

I found this hardware data sheet – but it turns out there is a GM1 and GM2 – GM1 is the low power. I wonder which o…[Read more]
neilh20 replied to the topic Gaps in my data in the forum Monitor My Watershed 2 months ago

@tumayflybearriver – thanks for brining it up. Its nuts, but looks to me like the signature of “thrown away data” by ModularSensors software that runs on the Mayfly, and the ODM2 software on monitormywatershed.

I’ve raised the issue of reliable delivery in 2018, and implemented it on my systems and offered it to the mainline Modu…[Read more]
neilh20 started the topic Missing data on MMW in the forum Monitor My Watershed 3 months, 2 weeks ago

Just an FYI I’ve just picked up that some of my sensor have lost data on or about Aug 6 1pm PST for 5 horus.

I’ve made great efforts to track the delivery of measurements, I’m thinking its MMW that has swallowed the data.

https://github.com/ODM2/ODM2DataSharingPortal/issues/731

I’ve used best computer science methods when working with open s…[Read more]
neilh20 replied to the topic OTA in the forum Infrastructure and Equipment 4 months, 4 weeks ago

Hey thanks for the reference. I’ve also been monitoring blynk .

Do you offload the data regularly? – that seems to be the big gotcha is figuring out how often to download data.
neilh20 started the topic OTA in the forum Infrastructure and Equipment 5 months, 1 weeks ago

This is rather a good summary of over-the-air updates – https://blog.arduino.cc/2024/06/13/why-do-ota-updates-matter-in-iot

I wonder if anybody is trying the arduino cloud that it uses.? https://cloud.arduino.cc/
neilh20 commented on the post, An Autonomous Lighted Insect Trap to Assess Aquatic Ecosystem Health 7 months ago

Its some good thinking and takes time to scope it. From what I understand, some of the AI on vision detection may have a lot of promotion without understanding what it takes technically to make it reliable. I’ve […]
neilh20 commented on the post, An Autonomous Lighted Insect Trap to Assess Aquatic Ecosystem Health 7 months ago

For the aspect of visual analysis – perhaps one of these hardware modules might be appropriate Which partly means choosing the size of a camera, seems like its is 2Mpixel or 5Mpixel There is also a discussion […]
neilh20 replied to the topic Suggestions for pictorial wiring diagrams in the forum Miscellaneous 7 months, 1 weeks ago

Hi @braedon-dority, my take is that the first step is to have personal documentation to be able to repeat your work, and that you can read it. Just to be basic, part of the learning is how to do documentation that you can then read your self.

Personally I find I come back to a working sensor some years later – and then want a traceable reference…[Read more]
neilh20 commented on the post, An Autonomous Lighted Insect Trap to Assess Aquatic Ecosystem Health 7 months, 1 weeks ago

Hi @Mike Miller, good to have a variety of skills, and the target of making stuff/engineering is to have a customer or user -your 🙂 and then the user phrasing requirements – often iteratively with the engineering […]
neilh20 commented on the post, An Autonomous Lighted Insect Trap to Assess Aquatic Ecosystem Health 7 months, 2 weeks ago

Thanks so much for the posting. Fascinating. While R.Pi might be great for prototyping – it does require a lot of mW power, and it can’t be put to sleep. A great way of reducing total deployment costs is to have […]
neilh20 commented on the post, New in Monitor My Watershed: Organization Site Ownership 8 months, 2 weeks ago

Thanks for the update, its nice to get the visibility on what is coming. Of course the real world is its also useful to know when something change, and then adapt to it ….. or sometimes its a case of figuring […]
neilh20 replied to the topic Monitoring power consumption in the forum Mayfly Data Logger 9 months ago

Congrats – nice to see.

I guess the fundamental problem of power management is still there and can bite any time the power drops – and then likely will require a site visit to get the site restarted. Getting enough power is a band aid to enable reporting readings. So long as the power supplied exceeds the power used by a good margin it works. :)…[Read more]
neilh20 replied to the topic Monitoring power consumption in the forum Mayfly Data Logger 9 months ago

@jamesp thanks for sharing. Interesting where the “banana skins” are to slip on.

Nice to know its got low quiescent current – end of last year I also got the same SanDisk Industrial MLC MicroSD SDHC UHS-I Class 10 SDSDQAF3-008G-I withs its specified Operating Temp Range: -25°C to 85°C , but haven’t measured its current 🙂

I’ve bought uSD with…[Read more]
neilh20 wrote a new post 9 months ago

N Ca Mayflys through the winter storms Following on from the phased deployment envirodiy.org/mayflys-in-coastal-redwoods-northern-california I’m pleased the way my fork of Mo […]
neilh20 replied to the topic Monitoring power consumption in the forum Mayfly Data Logger 10 months ago

@jamesp I wonder how the systems are faring?
neilh20 replied to the topic Using SAMD51/Wio Terminal in the forum Infrastructure and Equipment 10 months ago

A follow up – I had this running for about 6 weeks last year.

The code is in my fork is at https://github.com/neilh10/ModularSensors/tree/release1/examples/samd_log_display_mmw and is available to the main at any time.

For test purposes, I positioned the temperature sensors in my office, attached to different areas round the heating vent, w…[Read more]
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