EnviroDIY | dan@wachusett | Activity

dan@wachusett replied to the topic New Xbee Modem: XB3-C-GM1-UT-001 in the forum Mayfly Data Logger

Thu, 26 Sep 2024 11:54:50 -0400

Thanks Sara, that is good news. I will be ordering several of these to replace the modems at all of my sites. The previous version was not that reliable, so I am hoping they made some improvements to the design in this version. I will make sure to use “transparent mode” in my sketches.

dan@wachusett replied to the topic New Xbee Modem: XB3-C-GM1-UT-001 in the forum Mayfly Data Logger

Thu, 19 Sep 2024 16:27:37 -0400

Thanks Shannon! Some testing and an example sketch would be very helpful.

dan@wachusett started the topic New Xbee Modem: XB3-C-GM1-UT-001 in the forum Mayfly Data Logger

Wed, 18 Sep 2024 16:36:48 -0400

Hello EnviroDIY,

The Digi Xbee modem XB3-C-A2-UT-001 was recently replaced with a new version: XB3-C-GM1-UT-001. The product change notification (attached) claims that the new modem is a “drop in replacement” for the discontinued model. Before I put in an order for these to replace my older, failed Xbee modems, I wanted to check with the forum…[Read more]

dan@wachusett replied to the topic LTEBee on Verizon? in the forum Mayfly Data Logger

Thu, 15 Jun 2023 13:36:52 -0400

Hi Neil,

I ordered my Verizon SIMs through a company called Simetry and have used them successfully with the Digi XBee modem (XB3-C-A2). Unfortunately, I have had these modems fail as well, but for unknown reasons. I have a bunch of the LTE Bee modems, but I can’t use them with our Verizon account because of the end-level certification issue. As…[Read more]

dan@wachusett replied to the topic Modbus communications on Keller CTD Sensor in the forum Environmental Sensors

Wed, 31 May 2023 18:59:58 -0400

@neilh20

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]

dan@wachusett replied to the topic Erratic EC response of Hydros 21 sensors in the forum Monitor My Watershed

Tue, 16 May 2023 13:30:08 -0400

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]

dan@wachusett started the topic Modbus communications on Keller CTD Sensor in the forum Environmental Sensors

Tue, 16 May 2023 13:00:53 -0400

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…

[Read more]

dan@wachusett replied to the topic Modem Alternatives (Verizon certified) in the forum Mayfly Data Logger

Thu, 20 Apr 2023 12:06:51 -0400

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]

dan@wachusett replied to the topic Modem Alternatives (Verizon certified) in the forum Mayfly Data Logger

Tue, 11 Apr 2023 19:24:29 -0400

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.

dan@wachusett started the topic Modem Alternatives (Verizon certified) in the forum Mayfly Data Logger

Tue, 11 Apr 2023 18:59:22 -0400

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]

dan@wachusett replied to the topic LTEBee on Verizon? in the forum Mayfly Data Logger

Fri, 13 Jan 2023 16:47:07 -0500

@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]

dan@wachusett replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger

Tue, 01 Nov 2022 12:41:38 -0400

Is there any updated timeline on the RS-485 half shield production? The last update was about 6 months ago.

Thanks!

dan@wachusett replied to the topic Hydros 21 CTD sensor calibration question in the forum Environmental Sensors

Mon, 26 Sep 2022 17:34:09 -0400

@rogers1313

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

Fri, 18 Mar 2022 14:08:38 -0400

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]

dan@wachusett replied to the topic Keller CTD Sensor in the forum Environmental Sensors

Wed, 09 Feb 2022 20:22:02 -0500

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]

dan@wachusett replied to the topic Keller CTD Sensor in the forum Environmental Sensors

Wed, 02 Feb 2022 17:48:28 -0500

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]

dan@wachusett started the topic Keller CTD Sensor in the forum Environmental Sensors

Thu, 27 Jan 2022 15:10:34 -0500

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…

[Read more]

dan@wachusett replied to the topic Deep Cycle 12v Battery Recommendations in the forum Mayfly Data Logger

Tue, 25 Jan 2022 18:10:44 -0500

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.

dan@wachusett started the topic Deep Cycle 12v Battery Recommendations in the forum Mayfly Data Logger

Fri, 14 Jan 2022 20:39:52 -0500

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]

dan@wachusett started the topic Monitoring Buoy on Reservoir/Lake in the forum Infrastructure and Equipment

Fri, 14 Jan 2022 20:20:56 -0500

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

dan@wachusett commented on the post, The "Frankenlog" Network: A Forest Floor Ecohydrology Sensor Network Using the Mayfly Data Logger

Thu, 23 Dec 2021 19:58:47 -0500

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 […]

dan@wachusett commented on the post, The "Frankenlog" Network: A Forest Floor Ecohydrology Sensor Network Using the Mayfly Data Logger

Thu, 23 Dec 2021 19:56:36 -0500

dan@wachusett replied to the topic Mayfly not writing to SD card = possibly a libraries issue? in the forum Mayfly Data Logger

Tue, 02 Nov 2021 16:12:28 -0400

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…

[Read more]

dan@wachusett replied to the topic Publish to AWS? in the forum Mayfly Data Logger

Wed, 04 Aug 2021 11:34:53 -0400

@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]

dan@wachusett replied to the topic Publish to AWS? in the forum Mayfly Data Logger

Tue, 03 Aug 2021 16:36:52 -0400

@vogelrnws, We are using 4G LTE modems that are recommended by EnviroDIY with the LTE Bee Adapter. Verizon will send us SIM cards once we give them a list of IMEI numbers for the modems. Fortunately, our agency has access (with approval) for certain AWS storage/computing services, so I can take advantage of this since this project is relatively…[Read more]

dan@wachusett replied to the topic Publish to AWS? in the forum Mayfly Data Logger

Tue, 03 Aug 2021 16:20:16 -0400

Thanks for your input @neilh and @vogelrnws. I work for a state agency, so I have limited options when it comes to IT related endeavors, especially things that are new (like technology from the last 20 years). I am basically trying to follow pathways that have been lightly trodden, rather than attempt to blaze my own trail.

I am in the process…[Read more]

dan@wachusett started the topic Publish to AWS? in the forum Mayfly Data Logger

Tue, 06 Jul 2021 13:00:41 -0400

Hey EnviroDIY,

I am researching the use of AWS buckets as an alternative data endpoint for Mayfly logger output. Has anyone out there already tried doing this?

After some preliminary research it seems like that I would have to do the following steps:

Create my AWS bucket
Set up a new publisher script for logging to AWS as the endpoint
Set…

[Read more]

dan@wachusett started the topic MMW HTTP/GET Requests Possible? in the forum Monitor My Watershed

Tue, 06 Jul 2021 12:39:06 -0400

Hello,

I am wondering if it is possible to pull data from MMW using HTTP GET requests. I’m guessing no, but I figured I would check here in case anyone knows if it is possible.

Thanks,

Dan

dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors

Thu, 24 Jun 2021 19:40:45 -0400

Thanks Shannon, that is sound advice. We have 7 new Gen 2 Hydros-21 sensors and I will be delving in to this more later this summer. I do plan to test them in a controlled environment to make sure that the variation in output is within the accuracy range specified by the manufacturer.

dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors

Mon, 14 Jun 2021 12:34:41 -0400

Thanks @fisherba… I will take a look at the updated sketch. It seems like this correction should be part of the device firmware, but perhaps it was modified at some point and not included. I may try to apply this correction to my previous data downloads and see if fixes the issue. If so, then will update the sketch on the mayfly to perform this…[Read more]

dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors

Wed, 05 May 2021 14:26:02 -0400

Matt,

Sorry for the delayed response. You probably have the Gen 1 Hydros 21 sensor since the Gen 2 is brand new and I think I may have been the first one to get it. In fact, I can’t even use it yet because the ModularSensors library needs to be updated to handle some of the updates to the communications protocols. My Gen 2 has a black cable and…[Read more]

dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors

Tue, 13 Apr 2021 16:05:52 -0400

Hi Scott, I look forward to seeing your test results. Meter Group exchanged my Gen 1 Hydros21 with a brand new Gen2. I am programming it right now and will post new results after I test it. We are gearing up to expand our Mayfly network and I want to make sure we are using a dependable sensor before we purchase several units.

Dan

dan@wachusett replied to the topic Typical Mayfly Data Usage in the forum Mayfly Data Logger

Mon, 08 Mar 2021 16:32:35 -0500

My experience with Hologram Pilot Plan on the 2g network was as follows:

3 parameters (Conductivity, Temp, Depth) returned in addition to DateTime @ 15 minute intervals

Average daily use = 715 B per day. As an example we used 1.34 MB in the month of March 2020.

So for 1 station the cost is easily < $20 per year (in the pilot plan). However,…[Read more]

dan@wachusett started the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors

Mon, 14 Dec 2020 20:37:16 -0500

My Hydros21 CTD-10 sensor depth output is highly affected by the diurnal stream temp fluctuations by upwards of 15 mm sometimes. This issue was noted in forum post # 13557:

I recently got a quote for the CTD-10 (10m or 30′ – they only do the 10m now) with a fixed accuracy at 20C of 0.05% Full Scale or +-/5mm and no statement of how it varies wit…

[Read more]

dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed

Thu, 10 Oct 2019 19:20:09 -0400

Brian,

I rebuilt the project with ModularSensors Library version 0.23.11 and it worked! I don’t really know what all the differences were between versions, but I did notice a couple of things that may have been the cause (though maybe not, I really have no idea what most of these settings mean)…

I Removed the suggested build flags from my…[Read more]

dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed

Thu, 10 Oct 2019 14:55:44 -0400

I was able to compile and upload the sketch using PlatformIO on Atom, however the Response Code 504 persists. I used the ModularSensors Library version 0.23.16. Since the data is being written to the microSD card and the 2G cell modem is sending the data to EnviroDIY, I am out of ideas on why the EnviroDIY host is not able to take the data. I…[Read more]

dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed

Tue, 08 Oct 2019 16:53:01 -0400

Brian,

Other than your Response code [201], the only difference I see between my output and yours is that you use a 6 hour offset from UTC, while I do not. I know my data is being transmitted because I can see the event in the activity log on my Hologram IO account. Did you use Arduino IDE or Platform IO? Would that make any difference in how the…[Read more]

dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed

Tue, 08 Oct 2019 13:16:56 -0400

That was a good suggestion Brian. I updated my ModularSensor library from GitHub to version 0.23.16. I am still getting the 504 Response code however:

09:00:16.719 -> Sending data to [ 0 ] data.envirodiy.org
09:00:17.656 -> POST /api/data-stream/ HTTP/1.1
09:00:17.738 -> Host: data.envirodiy.org
09:00:17.738 -> TOKEN:…

[Read more]

dan@wachusett started the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed

Mon, 07 Oct 2019 15:05:07 -0400

I am in need of help troubleshooting why my Mayfly logger cannot send data to EnviroDIY.
Here are some details from the serial monitor:

09:51:58.564 -> Now running DWRI_CitSci.ino on Logger WACHUSETT-01
09:51:58.564 ->
09:51:58.564 -> Using ModularSensors Library version 0.22.6
09:51:58.564 -> WARNING: THIS EXAMPLE WAS WRITTEN FOR A…[Read more]

dan@wachusett posted an update: @shicks Thanks for your help troubleshooting. Our Mayfly […]

Tue, 20 Aug 2019 13:17:22 -0400

@shicks

Thanks for your help troubleshooting. Our Mayfly successfully logged data from the Hydros21 over the weekend. Next we will activate the SIM card and upload the sketch to send data to the Data Sharing Portal. Overall the instruction manual was fairly accurate and got me through most of the steps to program the Mayfly very easily. Other…[Read more]

dan@wachusett replied to the topic SDI-12 Change Address for Meter Hydros 21 CTD Sensor in the forum Environmental Sensors

Fri, 16 Aug 2019 12:01:35 -0400

Yes, the board seems to perform just fine while only 1 card is inserted. There are most definitely electrical irregularities when 2 cards are in at the same time! I had erroneously assumed that the horizontal card was for uploading sketches and that data would be logged to the second (vertical) microSD card, which could be extracted easily to…[Read more]

dan@wachusett replied to the topic SDI-12 Change Address for Meter Hydros 21 CTD Sensor in the forum Environmental Sensors

Thu, 15 Aug 2019 12:02:50 -0400

Yes, this is a brand new board.
The microSD card is not the issue – I have switched cards and get the same result. Both cards work fine if used alone.
I believe the problem lies in the circuitry between the two SD card slots… When only 1 card is inserted (either slot) the board powers on. If both slots have microSD cards inserted simultaneously…[Read more]

dan@wachusett replied to the topic SDI-12 Change Address for Meter Hydros 21 CTD Sensor in the forum Environmental Sensors

Wed, 14 Aug 2019 15:53:13 -0400

I was able to fix the issue, though I’m not sure at all why it worked. When I have a microSD card in extra slot for datalogging the Mayfly board will not even power up. As soon as I pull the microSD card out the LED lights blink, the red one stays on and all is well. This seems to be a rather serious issue since the entire purpose of the mayfly is…[Read more]

dan@wachusett replied to the topic SDI-12 Change Address for Meter Hydros 21 CTD Sensor in the forum Environmental Sensors

Wed, 14 Aug 2019 13:46:48 -0400

Update…
After some searching on other forums it seems the sketch upload error is just a communications error. Is there any reason why I have previously been able to upload sketches to my board and send output to the serial monitor, but now I cannot? Could it be a driver issue?

I did not install the FTDI virtual COM port (VCP) driver because…[Read more]

dan@wachusett started the topic SDI-12 Change Address for Meter Hydros 21 CTD Sensor in the forum Environmental Sensors

Wed, 14 Aug 2019 12:29:10 -0400

I am attempting to change the address for the Hydros 21 CTD sensor (On Mayfly Board v 0.5b) and running into an error uploading the SDI-12 Change Address sketch:

Using Port : COM3
Using Programmer : arduino
Overriding Baud Rate : 57600
avrdude: stk500_recv(): programmer is not…[Read more]

dan@wachusett became a registered member

Thu, 13 Dec 2018 16:26:39 -0500