@dan-wachusett
Active 5 days, 21 hours ago-
dan@wachusett replied to the topic Modbus communications on Keller CTD Sensor in the forum Environmental Sensors 5 days, 21 hours ago
Yes, I did get the Keller CTD. We had the budget and I was able to get an extra Hydros21 to deploy while figure out the Keller CTD. It took me a while to get the parts for the Modbus Wing shield and then build it, but I finally got them and had time to do it… so now I am in the thick of it.
I did follow instructions from the post you…[Read more]
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dan@wachusett replied to the topic Erratic EC response of Hydros 21 sensors in the forum Monitor My Watershed 3 weeks ago
Jim,
I have seen similar fluctuations in some of the streams where I have Hydros21 sensors. Typically, step changes > 100 µS in 5 or 15 minutes only occur during runoff/snowmelt events. In the winter, after a snow event with road salt application and subsequent melt I have seen > 2,000 µS fluctuations in 15 minutes as the salt pulses work their w…[Read more]
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dan@wachusett started the topic Modbus communications on Keller CTD Sensor in the forum Environmental Sensors 3 weeks ago
Hello,
I am looking for some help troubleshooting modbus communications on a Keller CTD sensor. I am running the very basic KellerTest sketch on a Mayfly 0.5b board with a RS-485 half shield adapter board. I turned on debugging to get some extra information.
- The Modbus slave address is returning a value of 253… it should be 1. However, there…
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dan@wachusett replied to the topic Modem Alternatives (Verizon certified) in the forum Mayfly Data Logger 1 month, 2 weeks ago
Matt, I did see that thread about the SIM and APN details, and have no doubt that the modems will work. The trouble is that our Verizon rep (as of January 2023) does not see the EnviroDIY modem IMEI numbers in their device database, therefore they will not “activate” them on our plan. We have SIM cards operating on the Verizon network now using…[Read more]
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dan@wachusett replied to the topic Modem Alternatives (Verizon certified) in the forum Mayfly Data Logger 1 month, 3 weeks ago
Thanks for the quick reply Sara. I might be willing to use jumper wires, but realistically, I lack the time and expertise to figure this out on my own in the near term. If someone else has done this and wants to share a fairly detailed how-to, I could probably follow along. I may circle back on this at some point in the future, time permitting.
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dan@wachusett started the topic Modem Alternatives (Verizon certified) in the forum Mayfly Data Logger 1 month, 3 weeks ago
Hello EnviroDIY,
I am wondering if there are other modems that can operate on the Mayfly 1.1 that are certified on the Verizon network? The new EnviroDIY modems are not certified on the Verizon network, so I can’t use those.
Unfortunately, working for a government agency means that I cannot choose the cellular provider that I want, I must go…[Read more]
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dan@wachusett replied to the topic LTEBee on Verizon? in the forum Mayfly Data Logger 4 months, 3 weeks ago
@shicks, has anyone from Stroud contacted Verizon about this? I am also hitting a wall with adding the LTEBee modem to our Verizon account. The rep from Verizon that we work with is willing to speak with the device manufacturer to get them added to the Device Management Database. How do the LTEBee modems differ from the Digi modems such that…[Read more]
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dan@wachusett replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 7 months, 1 week ago
Is there any updated timeline on the RS-485 half shield production? The last update was about 6 months ago.
Thanks!
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dan@wachusett replied to the topic Hydros 21 CTD sensor calibration question in the forum Environmental Sensors 8 months, 1 week ago
<div class=”bbp-reply-author”>@rogers1313</div>
<div></div>
<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] -
dan@wachusett replied to the topic Keller CTD Sensor in the forum Environmental Sensors 1 year, 2 months ago
Neil/Anthony,
I think we will be able to purchase one Keller CTD this year and I will work on getting it going on the Mayfly 1.1 in whatever spare time I can find in my schedule. I appreciate all the input so far and I am looking forward to digging into this in the coming months. I will keep you both posted as I get going… I’m sure there will…[Read more]
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dan@wachusett replied to the topic Keller CTD Sensor in the forum Environmental Sensors 1 year, 3 months ago
Thanks for the advice Neil, I think you helped me figure out a path forward here. I have a stream with long-term monitoring data that I do not want to interrupt, so my inclination is to use a sensor that I know how to use (Hydros 21) and if budget/free time allows I would purchase the Keller CTD without being under any time constraints to get it…[Read more]
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dan@wachusett replied to the topic Keller CTD Sensor in the forum Environmental Sensors 1 year, 4 months ago
Thanks for the information everyone, I really appreciate it!
It sounds like RS485 is the way to go if I want to keep it simpler and use methods similar (hopefully) to the Acculevel 0r Nanolevel sensors. The RS485 interface only requires 3.2 V, so does this mean that no voltage booster/level shifter would be required?
The RS485 version would have…[Read more]
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dan@wachusett started the topic Keller CTD Sensor in the forum Environmental Sensors 1 year, 4 months ago
I am looking for some feedback from the EnviroDIY community on a new sensor to try with the Mayfly — Keller – Series 36XiW-CTD (Conductivity, Temperature, Depth). I have attached the spec sheet from Keller.
- Would this sensor work with the Mayfly?… or maybe someone has already tried this sensor with the Mayfly? If so, could you share your…
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dan@wachusett replied to the topic Deep Cycle 12v Battery Recommendations in the forum Mayfly Data Logger 1 year, 4 months ago
Thanks for your input Neil and Cal. I pulled my station from the field where the battery was not recharging so I could do some testing. I’ll report back with my testing results to see if anyone has any advice. I would still be interested in the 12 v battery option if anyone out there uses one successfully with their Mayfly board v 0.5.
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dan@wachusett started the topic Deep Cycle 12v Battery Recommendations in the forum Mayfly Data Logger 1 year, 4 months ago
Can anyone recommend a good 12v deep cycle battery for use with the Mayfly 0.5 board. I have a station that gets very little sun and would like to be able to power it for long periods of time and swap out the battery a couple times a year. I did some looking around and the variation of specs and pricing made me unsure of which would be the most…[Read more]
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dan@wachusett started the topic Monitoring Buoy on Reservoir/Lake in the forum Infrastructure and Equipment 1 year, 4 months ago
My agency is interested in developing a Mayfly based monitoring buoy for short-term deployment (days or weeks) on a reservoir. I figured I would reach out on the forum to see if anyone here has tried doing this and has any design tips/advice. Any photos, schematics, or parts lists would help enormously.
Thanks in advance!
Dan
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dan@wachusett commented on the post, The "Frankenlog" Network: A Forest Floor Ecohydrology Sensor Network Using the Mayfly Data Logger 1 year, 5 months ago
Very cool project David. I am wondering if you could share a list of hardware/electrical components that you used to power your Mayflies with marine batteries. I have one site that gets virtually no sun, so I am […]
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dan@wachusett replied to the topic Mayfly not writing to SD card = possibly a libraries issue? in the forum Mayfly Data Logger 1 year, 7 months ago
I am experiencing a similar issue that may be related, although without the RTC issue…
- Built with Modular sensors v0.30.0
- Data is saved to SD card when connected to computer via cable. RTC time is correct (or close enough)
- If I disconnect the board from the computer it fails to wake up or log any data to the SD card
- Battery voltage is…
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dan@wachusett replied to the topic Publish to AWS? in the forum Mayfly Data Logger 1 year, 10 months ago
@vogelrnws, thanks for the digi link… this does seem like something that could work very well to send information to AWS from a XBee modem. There are still several steps to figure out in terms of getting a Mayfly program to execute the python code that is on the modem, perhaps like calling a function?, with the sensor data as the message…[Read more]
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