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neilh20 replied to the topic Mayfly 1.1 powering review & analysis in the forum Mayfly Data Logger 2 years, 5 months ago
An update on measuring battery voltage. I’ve purchased a number of Mayfly1.1 for a project. And on testing one of this batch, the noise level of measuring LiPo is better – which is great. The noise level of resistors is part of their specification, or it might be just luck in this case. Often a batch of noisy resistors is because the ma…[Read more]
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neilh20 replied to the topic Regular Data Outages in the forum Mayfly Data Logger 2 years, 5 months ago
Hi Jake, my take is its complex to be able to decode why MMW isn’t showing data ~ it needs a system look, location aspects (solar looks excellent) , maintenance inspection of site, reliability of hardware/battery/mechanics reliability of software on the Mayfly, reliability of software at MMW
It would be useful to know your configuration i…[Read more]
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neilh20 replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 2 years, 5 months ago
Thanks. The project perspective is often – initial qty and then what might be follow on qtys. Of course project planning is only a what if, and no guarantee
In my experience, one of the challenges with building an electronics board, other than the world wide supply chain issues, is that the base cost of engineering often means that at least 5…[Read more]
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neilh20 replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 2 years, 5 months ago
@James_NZ – I’m curious, just wondering how many RS485’s stations are you looking at and your planning project timeline.
What sort of instruments/powering are you looking to connect to.
There is a forward looking discussion on issues here, though the timeline for anything being built, I’m guessing is really dependent on specific project…[Read more]
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neilh20 replied to the topic Abnormally high battery voltage in the forum Mayfly Data Logger 2 years, 5 months ago
For the solar connecter, I colour the socket and the jack in an acrylic orange so that there is a visual match. The LiIon battery in a cooler blue. Of course have to be careful to only get the acrylic paint on the outside of the jack and not have leak inside. Its not perfect, but provides a little clue.
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neilh20 replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 2 years, 5 months ago
Suspect Mayfly1.1
The cable I was using also went bad and I’ve marked it as suspect – its a distinctive pink cable. I’ve inspected the Mayfly USB c on Mayfly1.1 with an Eye Loupe, and it is hard to inspect but nothing jumps out, seems OK.
I did have a USB current monitor in the testing before hand, and the current had gone up to 1.2A while…[Read more]
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neilh20 replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 2 years, 5 months ago
My USB connect to a rev1.1 board appears to be failing.
It was working, and now its stop connecting to the PC, stops even causing an audible ding.
If I take the same USB C cable and plug it in to the USB C of a Rev1.0A3 it sometimes works. Usually causes an audible ding, but sometimes doesn’t appear as a com port.
I’ve rebooted my PC twice, and…[Read more]
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neilh20 replied to the topic Mayfly version 0.5b data accuracy/validity in the forum Mayfly Data Logger 2 years, 5 months ago
One aspect of measurements the Mayfly does manage is the time. If the small battery gets used up, then it will reset to a default time. Another way of checking time is roughly accurate (+/ couple hours) is when the peak temperature occurs.
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neilh20 replied to the topic Mayfly with Xbee MTech mDot LoRa module in the forum Mayfly Data Logger 2 years, 6 months ago
I’ve been chewing and reading about LoRa for some time, and just recently been reviewing as part of student engineering project the data flow for LoRa and LoRaWan to TTN (The Things Network) and then to ubidots.
LoRa is designed as a long distance wireless protocol, however its also has constrained packet size.
So it seems to me, at this stage…[Read more]
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neilh20 started the topic 0.33.0 release testing in the forum Mayfly Data Logger 2 years, 6 months ago
Many thanks to @srgdamiano for the excellent releases and notes for 0.33.0.
It does take a lot of detail work to capture a release, and put together good notes on it
https://github.com/EnviroDIY/ModularSensors/releases/tag/v0.33.0I’ve merged it to my fork, so it’s the baseline, and I’ve been testing it over the weekend.
The configuration is Ma…[Read more] -
neilh20 replied to the topic Mayfly 1.1 powering review & analysis in the forum Mayfly Data Logger 2 years, 6 months ago
Here are some graphs of measured Vbat(10bit) with a software filtering that I’ve just completed. Its using a 2minute reading sample time – the electronic noise is hopefully similar when used on 15minute sampling intervals.
For the Mayfly 1.1 & Adafruit PkCell 4400mAh, I’ve run it for 4days interfacing over Modbus/RS485 in a critical voltage range…[Read more] -
neilh20 started the topic Mayfly 1.1 powering review & analysis in the forum Mayfly Data Logger 2 years, 6 months ago
The new Mayfly 1.1 has some great new features, though they may not ALL be visible until you look at the schematic.
A lot of hard work, has gone into the new Mayfly 1.0 and now Mayfly 1.1, and I would like to thank Shannon for creating and sharing it, and for being open to discussing some parts of the powering system. A small computer board takes…[Read more]
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neilh20 replied to the topic DIY auto sampler in the forum Infrastructure and Equipment 2 years, 6 months ago
@craig607 yes totally agree, spit balling or back of the envelope sketch 🙂
So great – you can see I’m asking the dumb questions, and if some one has to pick up the bottles every so-often, then can also switch out the power source batterys :).I see now how the hardware fits in, and found the schematics…[Read more]
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neilh20 replied to the topic DIY auto sampler in the forum Infrastructure and Equipment 2 years, 6 months ago
@craig607 great to see the stepper functionality and managing it with the GCODEs though I wasn’t clear what the Marlin board is, and how it gets activated. Is the relay the power switch ON, or a pull to ground input.
This probably says how basic my view is, looking at powering, the 4.2V is nice as it maps to a LiPo battery, though LiPo are 4.2V…[Read more] -
neilh20 replied to the topic DIY auto sampler in the forum Infrastructure and Equipment 2 years, 6 months ago
@craig607 fascinating, thankyou for the brainstorm.
Looking at the stepper motor power draw, seems like managing where that power draw comes from would be part of the design. For one source of steppers that give a range of V and A, there is a lot of choice https://www.adafruit.com/?q=stepper&sort=BestMatch
Happy to brainstorm that part if its useful. -
neilh20 commented on the post, New Mayfly v1.1 release date and Product Status page 2 years, 6 months ago
Hi Shannon, just wondering if you see that Mayfly 1.1 and Modem will be available from Amazon in single piece qtys? I can only find the Kit at present. Thanks
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neilh20 replied to the topic Data Uploading but not Publishing in the forum Mayfly Data Logger 2 years, 6 months ago
@lyh2o I wonder, assuming you have this in the office, if you could enable some debugging and post it.
The debugging most useful is
-DMS_ENVIRODIYPUBLISHER_DEBUG
so depending on how you build, but if platformIO it would be on a separate line
build_flags =
-DSDI12_EXTERNAL_PCINT
-DNEOSWSERIAL_EXTERNAL_PCINT…[Read more] -
neilh20 replied to the topic Keller CTD Sensor in the forum Environmental Sensors 2 years, 7 months ago
Great – I’ve asked https://www.instrumart.com/ if they plan on stocking it.
Something to note, a bit strange, is it comes up in SDI-12 mode, and needs an initial configuration to switch to RS485.
From getting some initial success – it may be worth starting with SDI-12 and getting some responses. Alternatively talk with a tech rep as to how they…[Read more] -
neilh20 replied to the topic Keller CTD Sensor in the forum Environmental Sensors 2 years, 7 months ago
A further note on developing a new interface over Modbus; is to then check that when its running the instrument is actually reporting well over that interface.
I’ve integrated an LT500 Modbus into ModularSensors – and the question now is how well does it perform. Does it actually report and work well. I’ve had this working well on the SDI-12, so…[Read more]
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neilh20 replied to the topic Keller CTD Sensor in the forum Environmental Sensors 2 years, 7 months ago
@dan-wachusett I’ve just done quite a bit more work with modbus protocol, including developing an InsituModbus and though I would share here what I found out.
What its shown me is that possibly for the Keller CTD, a baby step may be to o start with https://github.com/EnviroDIY/KellerModbus and modify examples/GetValues to see if you can pull t…[Read more]
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