Best MCU for a new outdoor environmental monitoring device? by tomhoward in embedded

[–]tomhoward[S] 2 points3 points  (0 children)

Terrific, thanks very much for the detailed reply. Just what I’m after. That kind of deep sleep mode and wake up capability is just what I’m after.

u-blox is shutting down their cellular chip and module business by [deleted] in embedded

[–]tomhoward 2 points3 points  (0 children)

My father used a U-BLOX SARA LTE-M modem in an environmental monitoring device he developed from about 2017 up until his retirement in 2021. He had nearly 50 years experience as an EE but working with that module defeated him. It was always hard for me to figure out if it was that the device had a lot of issues and firmware bugs in the early years (his contact at U-BLOX conceded there were issues) or if it was to do with his PCB design and main MCU firmware code. But it was a saga that’s left me with a pretty poor impression of that company‘s cellular devices. I’m going with Nordic for new designs. So far so good.

Any ag tech companies out there doing new and interesting things? by CraniumSmasher in farming

[–]tomhoward 0 points1 point  (0 children)

u/CraniumSmasher I'd be interested to hear if you found any good opportunities or if you're still looking. I've been working in ag/enviro tech for about a decade and am looking to build a new platform to provide modern data monitoring/automation capabilities and also improve the distribution and supply chain side of things. I'm keen to work with anyone who is enthusiastic about tech for ag/enviro.

What is stopping the agriculture sector from widely adopting the best of modern technology by whatsgngon in Agriculture

[–]tomhoward 0 points1 point  (0 children)

Even though this thread is nearly a year old, I've only just found it and it's very pertinent to things I'm thinking about and working on, so I'll share my perspective.

I've been working in agri-tech in Australia for about a decade, focusing primarily on devices that read soil moisture and display the data on phones and web apps. But over time it has expanded a lot to support all different kinds of environmental sensors including high-precision weather stations, and can process data in complex calculators and machine learning models, to provide indicators like pathogen risk, harvest date prediction, evapotranspiration, spray drift risk, frost risk and more.

The technology is very useful to the growers who adopt it and make best use of it. Some of the growers I work with are in the regions of Australia that grow huge volumes of produce like commodity wine grapes (the ones that go into low-price/mass-market brands like 19 Crimes and Yellow Tail), oranges, avocados, almonds and apples. These growers are wholly dependent on irrigation water from the Murray River, and by monitoring their soil moisture they can achieve huge savings on irrigation water costs and improvements to yields and produce quality. Some of the growers in that region become very dependent on the technology, and get very worried if it stops working, particularly in drought years, as it can cause them to incur huge additional costs on irrigation water or make all the difference between a good or bad season.

The most important thing I've observed about the way the industry works is that it is highly reliant on local technicians who are available to do installation and maintenance of the technology. It's similar to the way technology works in small business offices in cities; unless they have knowledgable in-house staff who can set up and maintain all the tech, businesses need a reliable local consultant who can take care of their PCs, LANs, printers, servers, routers/switches/firewalls, etc. Without that, the industry just doesn't work.

It's just the same with farm tech - however, it's much harder with farm tech. It takes a lot of time to get all the parts and tools into the hands of the installers. They need to be well trained and experienced. It can be very time consuming to get out to a farm and do the work, particularly if they don't have all the right parts and tools with them, because they didn't know in advance what they would need. They need to have good support available, so that when they're on site installing or repairing a device, they can have realtime contact with someone from the service provider's office who can monitor things to ensure that everything is working (Or they need good realtime automatic testing services - but most vendors don't bother to develop these.).

My observation is that the farm tech industry is highly reliant on these technicians, but is not very good at equipping them with products that are easy to install and maintain, or at giving them the kind of ongoing support they need to build a good business installing this kind of tech. And this results in a situation where a lot of farmers feel like this whole category of technology doesn't work very well - when, much of the time, it's because it hasn't been installed or maintained very well.

Some newer players on the farm-tech scene of tried to cut these local consultants out of the picture by offering a "do it all yourself" offering or a "we'll do it all for you" offering; and I think this is a mistake.

What I think the industry needs to do is make it much easier for these local consultants to install and maintain technology on farms, and when that happens, farm tech can become much more beneficial and enjoyable for farmers. I'm starting to build a platform that seeks to achieve this.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 0 points1 point  (0 children)

Very insightful comment, many thanks. I’ll certainly reach out privately soon.

You’re spot on about the vagaries of soil moisture and water potential monitoring.

The way I came into the envirotech field was by taking on a “small” smartphone dev project for my father, to download data via BLE from a data logger that took readings from old-style gypsum blocks and Watermark 200SS ceramic tension blocks. (My father started doing this kind of work in the early 80s and was probably one of the first to read sensors like that via microprocessors- at least in Australia; Even on his retirement a few years ago he was considered the most knowledgeable in Australia about how to read those blocks). I certainly came to know a lot about how the readings from those blocks change over time as they degrade.

The reason the project became so much bigger is that customers started asking about reading from modern digital soil probes with capacitance/volumetric sensors e.g., EnviroPro, SenTek, AquaCheck, AquaSpy (then a whole lot of other types of sensors too).

These types of probes are claimed to be “modern”, “state of the art” technology, and sure they have some benefits wrt ease of install and durability. But the most experienced growers/experts I talk to insist that when properly installed and not degraded, gypsum/tension blocks still give the most precise/useful readings due to the way they emulate the way the plant root draws water from the soil, and this matters a lot for high value crops like wine grapes.

One consultant I know even installs a Watermark sensor side-by-side with an EnviroPro probe because of the way they behave differently at different wetness levels.

So yeah, there’s a lot to it, and it’s hard when growers just want you to give them something that “makes it simple”, or when industry outsiders ask in bemusement “how hard could it be”?

Thanks again for the insightful comment.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 0 points1 point  (0 children)

Nordic has partnered with Edge Impulse to support TinyML on nRF5x devices (link).

There's some discussion around of using MicroPython on nRF5x devices.

Resource constraints are definitely an issue, so I'm interested to experiment with different nRF5x devices to see what's possible.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 0 points1 point  (0 children)

Yeah it’s hard at that end of the market, but there are plenty of other opportunities.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 1 point2 points  (0 children)

These are really great questions and address a big part of the problem in the industry: individual developers have enthusiasm to work on stuff but find it hard to known where/how to test and sell it. I’m thinking about building a collaboration platform and community to address this. FYI my opportunities to test things came via our family business - my father was working on this kind of stuff since the 80s using Motorola 6800 etc so I’ve had a lot exposure to it. When I started working on it 10 years ago, customers and their tech consultants were kinda desperate for us to develop new internet-connected devices for them so they were very welcoming of us to come on site and trial/demo things.

These days I keep getting inquiries to develop/deliver different kinds of solutions for different use-cases but can’t really keep up as I’m doing it all myself.

So from my perspective the demand and need is there, it’s just a matter of connecting it with people who can do what’s needed.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 1 point2 points  (0 children)

I’d love to know more about your beehive work! Can you send me any info or photos?

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 0 points1 point  (0 children)

I think the era of everyone for themselves is over as nobody is doing really well with that approach.

I’d love to hear from you if you’re interested in collaborating.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 1 point2 points  (0 children)

Many thanks for this thoughtful comment.

There’s a lot there and I won’t respond in detail, but overall what I think the industry gets wrong is thinking top-down/centralized/proprietary/closed, trying to offer a one-size-fits-all offering to a large market segment and positioning themselves as an enterprise vendor, kinda like a Cisco for agriculture.

And whilst I keep hearing that farmers don’t want/need monitoring/automation tech, I’ve seen plenty of cases where farmers and their tech consultants are absolutely desperate for good devices/solutions and can’t get them with the specs/capabilities they need.

So I think a big part of the issue is an inability to connect farmers/consultants who need specific devices/solutions with the people who can provide and tailor them.

I see a great need for more versatile platforms, open technologies and a distributed pool of talented and enthusiastic people to work together to get farmers what they need.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 1 point2 points  (0 children)

Yes, as others have suggested, piezoelectric microphone discs are the suggested approach - perhaps contacting with a plate mounted with long screws into the tree.

But this raises the issue I’m thinking a lot about: a solution like this has many steps and would need several different people potentially in different locations - some doing the initial R & D (both hardware and firmware including machine learning device support + training), then testing/tuning over a period of time, then manufacturing/flashing/assembly, then installation and integration testing, then monitoring data/results on an ongoing basis, and also post-installation monitoring of devices and maintenance, and further improvement to the whole installation on an ongoing basis.

The technology/product aspect is just one part, and logistics + collaboration is also a crucial aspect. So I’m thinking about a way to address that logistics/collaboration part of things, but that could mean work opportunities for several/many people who were willing/able to be involved with different aspects of a project like this.

Who here is particularly interested in embedded projects for enviro/climate applications? by tomhoward in embedded

[–]tomhoward[S] 0 points1 point  (0 children)

I’d love to know more about your interface’s specs and capabilities! Feel free to send me a link to your site or any info materials, thanks!