@dan-wachusett
Active 1 weeks, 5 days ago-
dan@wachusett commented on the post, The "Frankenlog" Network: A Forest Floor Ecohydrology Sensor Network Using the Mayfly Data Logger 2 years, 9 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 2 years, 11 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 3 years, 2 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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dan@wachusett replied to the topic Publish to AWS? in the forum Mayfly Data Logger 3 years, 2 months ago
@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]
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dan@wachusett replied to the topic Publish to AWS? in the forum Mayfly Data Logger 3 years, 2 months ago
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]
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dan@wachusett started the topic Publish to AWS? in the forum Mayfly Data Logger 3 years, 3 months ago
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…
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dan@wachusett started the topic MMW HTTP/GET Requests Possible? in the forum Monitor My Watershed 3 years, 3 months ago
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
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dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors 3 years, 3 months ago
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.
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dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors 3 years, 3 months ago
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]
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dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors 3 years, 5 months ago
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]
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dan@wachusett replied to the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors 3 years, 5 months ago
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
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dan@wachusett replied to the topic Typical Mayfly Data Usage in the forum Mayfly Data Logger 3 years, 7 months ago
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]
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dan@wachusett started the topic Hydros-21 Depth Temp Compensation in the forum Environmental Sensors 3 years, 9 months ago
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…
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dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed 5 years ago
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]
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dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed 5 years ago
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]
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dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed 5 years ago
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]
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dan@wachusett replied to the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed 5 years ago
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:…
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dan@wachusett started the topic Response code 504 sending data to data.envirodiy.org in the forum Monitor My Watershed 5 years ago
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 5 years, 1 months ago
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]
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