Matt Barney

Thanks, Anthony, for this informative post! It speaks to some questions we at Trout Unlimited have had about MMW, its current performance, and future direction, as we look to expand our Mayfly deployments.

Matt

(cc @jlemontu-org)

Me too. The problem seemed to be specific to the one browser tab; when I opened a second (non-incognito) tab, it worked. Never had that happen before with MMW.

Thanks again,
Matt

Hi Robert,

Hmm looks like it is browser-related. I tried again just now and still didn’t work, but it does work in an Incognito window, so not sure what’s up. My colleague reported that it wasn’t working for him this morning, so I checked and it didn’t work for me at that time either.

Thanks for your reply,

Matt

Hi Neil,

Thanks for opening up this important topic, and for sharing your work!

This idea of scaling up one’s Mayfly installations is really coming to the fore at my organization, Trout Unlimited (TU). My colleague Jake (@jlemontu-org) has been working with Stroud for a couple of years now to deploy Mayflys with volunteer groups in Michigan,…[Read more]

Today I re-tested, using new hardware: Mayfly, modem, antenna, and LTEBee adapter. I’m still seeing the same problems: both Response Code 504 from MMW, as well as what I described above, where there was apparently(?) no attempt by the Mayfly to upload data after saving it to the SD card based on the messages it logged. I’ll attach the log file.…[Read more]

Hi Robert,

I just now tried and am also unable to upload a CSV. In the past, I had trouble due to formatting or due to files that were too long, but once I figured that out, I saved examples of files that I’ve successfully uploaded. However, those are now failing as well. Sample csv attached, FWIW.

Matt

Hi again.

I ran another test overnight, again using a 2 minute sampling interval, with no code changes, but I removed the build flags for modem debugging from the platformio.ini. Here are the results:

• 427 total samples taken
• 52 sample events received a Response Code 504.
• 246 sample events received a Response Code 201.
• 155 of the samples…

[Read more]

Hi Anthony, Thanks for that, and will keep the tracert in mind!

Hi Neil, Yep, that’s software development; I’ve got the grey hairs too! I am interested in learning more about your thoughts and approaches to reproducibility, so will start a thread on that soon. Your progressive testing approach sounds great, and is what I’m trying to work toward…[Read more]

Hi Neil,

Thanks for your good explanations and ideas. As you’ve described, the Mayfly->MMW system in its current form would need additional engineering effort to be able to support a high-reliability communication system with built-in buffering, retries, etc.

At the moment, I’m trying to understand why our Mayfly systems’ reliability has dropped…[Read more]

Thank you, Neil!

Here is more information, from a test I ran overnight using a 2 minute sampling interval, from 04-01 15:32 to 04-02 08:08 MST (UTC-7:00):

• 498 total samples taken, of which 7 failed to get inserted into the MMW database.
• 55 sample events received a Response Code 504.
• 1 event received RC 400.
• The remainder received RC 201…

[Read more]

I’ve been getting a lot of 504 (Gateway Timeout) HTTP responses to the POST messages sent to MMW. I ran a test today with my Mayfly sampling every 2 minutes, and out of 111 samples, I got 34 successful (201) response codes and 76 response codes of 504. I also got one 502-Bad Gateway, and that datapoint didn’t make it up to MMW; the rest did. My…[Read more]

And it’s down again. 8:54am MDT. I’ll also post on GitHub.

Thanks Heather!

Hi Sara,

Today I started to shift my workflow to having all dependencies local to a given project as you suggested. I’m wondering whether it’s even necessary to clone the ModularSensors dependencies into the project’s .piolibdeps path? If I create a new PlatformIO project and modify its .ini file to include:

lib_ldf_mode = deep+
lib_ignore =…

[Read more]

The new SIM card from Verizon works! I first did some testing using XCTU, and I can set the Carrier Profile (CP) either to 3-Verizon, or to 0-Auto-detect, and it registers and works successfully. (Not surprisingly, it never registers when CP is set to 2 (AT&T), and I also presume that setting CP=0 in an AT&T-only coverage area would not…[Read more]

Thanks Sara. I managed to get the forbidden list displayed, and cleared. Not certain what I was doing wrong before.

If I remain in the Console and continue querying, the forbidden list will get repopulated after 15-30 seconds. The response is:

+CRSM: 144,0,"130184FFFFFFFFFFFFFFFFFF"

OK

So, assuming that that value decodes to MCC=311 and MNO=480,…[Read more]

More info: It appears that the command is being sent to the modem at every comma; I had been pasting the entire command into the Console window and getting the 3 errors. If I try typing it by hand, as soon as I type this comma: at+crsm=176,

…it immediately returns ERROR.

I’m unable to query the FPLMN list. I did it successfully last week, so not sure what’s up now.

When I issue the command, I get 3 errors:

at+crsm=176,28539,0,0,12ERROR
ERROR
ERROR

I thought that the last time I got it to work, I was in bypass mode and airplane mode. This time, I’ve tried bypass and transparent modes and have tried it in airplane…[Read more]