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@srgdamiano
Hi Sara, any advice on the question above, about powerUp/powerDown vs. wake/sleep?

Matt

Doh, yes, Shannon’s right!  I didn’t look closely enough before I deleted it, but there probably is a missing UUID!

Looking back, I replaced all the UUID’s with <<REMOVED>> for you so because you probably don’t want those to be public.  I can’t see or revert it to the original, but looking at it, your last measurement has just "":-9999} so it l…[Read more]

I saw this happen with someone recently who was having the same issue with data not showing up online and getting the 504 response code.  Turns out it was a missing UUID in the list of sensor variables in the Arduino sketch.  When there’s a mismatch between the string you send Monitor My Watershed and what it’s expecting, you get the 504 r…[Read more]

In addition to what Sara said (she’s the best!) about the UUIDs for the station when I’m doing that many stations at once I easily also miss an occasional apn = “hologram”.

If the code all checks out, I second the experience that it’s strange how sometimes it takes way longer for one or two modems to connect, even when things are from the same…[Read more]

If it’s a Windows device each Mayfly will be assigned a different COM port number. Maybe you knew this but that’s the best I have with what you are saying. It’s promising that they connect.

(I mean, there’s also the is the Mayfly turned on step…)

Hmm.  Does Hologram show any data being transferred?

Monitor My Watershed is known to sometimes drop or not respond for no apparent reason.  But usually if one station is working all the time and another isn’t it’s either the UUID and tokens or the internet connection.  When you’re looking at MonitorMW, are you seeing anything at all?  The num…[Read more]

Yes, the SIM cards are appearing as active on Hologram.

We had three staff try it separately, pulling the tokens and UUIDs each time from MMW so I’m assuming their correct.  We could try another time to make sure.

I should add that we haven’t figured out why some connect right away and others don’t.  So even with an apparently identical batch of sims and modems, it wouldn’t surprise me if some connect immediately and others don’t.

I removed the UUID’s from your post.

Do you see any connections or activity from the SIM cards on Hologram?  Sometimes it takes a really long time to connect to the network with a new SIM card, a new modem, or at a new location.

Are you sure your tokens and UUIDs are all correct?

Hi Dan,

We recently did some internal testing of this issue and will post results soon. We don’t have a “fix”, but we did measure this behavior to guide our own interpretation of data.

Scott

Woops.  The invalid version number was my fault; I screwed up the semantic versioning.  I released a new version yesterday which is identical except for the version number which is now a valid 0.28.3.

But  that isn’t actually your problem.  The invalid version number and the stuff about “requestFrom…” are just warnings.  It compiled anyw…[Read more]

Another low cost depth sensor, showing the problems with using “raw sensing”,  and the range is very small range 0-10cm and needs recalibrating evertime there is a power cycle. – https://www.vegetronix.com/Products/AquaPlumb/ – but my experiments have shown it has 

My comment “Works pretty nicely, except after power off.
Can’t take power off w…[Read more]

Hi James,

If its the standard variable resistance then you should be able to just use the switched 3V. The ADS1115 is going to be more accurate.

FYI in case its of interest, I did some work with it and here is what I found out about the  eTape;  as I remember with the eTape, was that in calibration it wouldn’t register to the printed zero mark -…[Read more]

I have the Com Port coming up now but when I try to run the board temp or now sketches I get an error message “Invalid version ‘0.28.01’ for library in: C:UserscnolanDocumentsArduinolibrariesEnviroDIY_ModulatSensors” and the red light does not blink alternately with the green. I only get a blinking green light.

This is what I get when I copy the…[Read more]

Done