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@rogers1313
Active 8 months, 4 weeks ago-
neilh20 replied to the topic Power usage of Mayfly1.1 with Hydros 21 cTD and LTE BEE cell modem in the forum Mayfly Data Logger 1 years, 6 months ago
@rogers1313 gosh its all depends on the software you are using – what’s the version of software and the source. Since its open source software and hardware, and you can look at the software – its possible to guestimate those answers. Then since its software that causes the most power usage, it needs testing.
For a turnkey system, assembled off…[Read more]
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neilh20 replied to the topic 900 Mhz Point to point and cellular connection. in the forum Mayfly Data Logger 1 years, 9 months ago
@rogers1313 interesting question, and I’ve been mulling over possible solutions as it seems very attractive.
The area undefined , is power, cost of the cellular gateway, and reliability of the connection.
Its possible to do the individual elements easily – 900Mhz point to point – and cellular – but then introduce a packet with the “readings i…[Read more]
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dan@wachusett replied to the topic Hydros 21 CTD sensor calibration question in the forum Environmental Sensors 2 years, 1 months ago
<div class=”bbp-reply-author”>@rogers1313</div>
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<div>I have used the Hydros-21 for several years now and can add a bit to what Neil has mentioned. I also asked the engineers at Meter Group about temperature compensation and found their response unhelpful. My Hydros21 sensors output water depth that is highly affected by temperature (I…[Read more] -
neilh20 replied to the topic Hydros 21 CTD sensor calibration question in the forum Environmental Sensors 2 years, 2 months ago
@rogers1313 – its a good “engineering question”. speaking as an electrical engineer and some one that has blogged on understanding traceability, measurement range, measurement resolution. measurement accuracy and total error band of measurement being different aspects of the measurement.
In short the Hydro 21 has calibrated measurements th…[Read more]
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neilh20 replied to the topic Geographically Scaling Modular Sensors in the forum Mayfly Data Logger 2 years, 2 months ago
@rogers1313 great to hear of your project from the technical questions thread.
This thread on scaling may be of interest.
I just posted a lot of links for scaling systems, and I forgot that enviroDIY doesn’t allow too many links in messages. (spam protection I guess).
I’m scaling some systems for Tu N California, soley stage gauges at…[Read more] -
neilh20 replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 2 years, 2 months ago
@rogers1313 my systems only have the Yellow led ON when actually charging. If the battery is charged, not charginng then it is OFF. The description in “Section S”, beneath the pics https://www.envirodiy.org/mayfly/hardware/details-and-specs/ says
A yellow LED (labeled CHARGE) will light anytime the battery is being charged. Once a battery is…
