Thanks again for such a prompt and thorough reply, yet again.

We have continuous data starting in last July.  The variation in depth over four months was consistently in the neighborhood of +265-275mm.  There was a period of very cold temps around Christmas and the edge of the stream froze but I don’t think that the probes were e…[Read more]

After collecting nearly a year’s worth of data, it is clear that the depth sensor values are all over the place.  I’m attaching a file that shows the variability between the staff gauge and the mayfly depth sensor.  There doesn’t seem to be any pattern to the variation that I can determine.  I tried graphing the data to see if something wo…[Read more]

Dave

I’m in south central PA and haven’t taken the probes out of the water for the winter.  It seems like that would defeat the purpose of monitoring conductivity spikes from road salt – after snow storms.

I know that the CTD probe isn’t supposed to freeze but I am leaving it deployed and checking it weekly when cleaning probes/swapping data…[Read more]

Thank you for reaching out.  I haven’t updated the UUID on the mayfly because I’m not clear on how to do it and not mess up the sketches that it is running.  Not having attended a mayfly workshop, I don’t really know much about coding/reprogramming the unit.

Any advice/instructions you could provide would be greatly appreciated.  I’ve pe…[Read more]

Our mayfly has been moved to a new location.  I’ve created a new site registration on MMW but when I try to upload data (CSV format, 1 week’s data) I get the following error message: “Failed to upload data.  This file corresponds to another site.”

I don’t have access to the log-in or site data for the previous site because the person who s…[Read more]

Thank you once again for your thoughtful and thorough reply – as well as for your patience and understanding of my Mayfly ignorance for not having attended a workshop.

I greatly appreciate you sharing your time and knowledge.  Your reply above is quite helpful.

The board already has corrosion issues on the main chip- likely…[Read more]

Our Mayfly 0.5b has been redeployed after sitting in storage for more than a year.  Yesterday I downloaded a week’s worth of data and I’m wondering how to tell if it is accurate and that the CTD probes are working as they should.

From a quick scan of the data I’ve noticed a few things.

• the battery voltage is holding steady at above 4.0.…

[Read more]

St. Patrick’s Day miracle…

Chip cleaned with 91% but still a bit corroded – but Adafruit CP2104 manually attached (not soldered) and iMac picked up the com port, I adjusted baud rate until gibberish became legible.  Will have the adapter soldered together and we should have a working machine.

Thanks so much for your time and help!

Dave

I’ll try to clean it up a bit this afternoon but I think the corrosion is pretty bad – based on the image.

I’ll keep an eye out on Amazon to see when the single boards become available.

Thank you again for your time and help.

Dave

We got the Adafruit adapter and sent it and the board to a local university where our intern is from to have the engineering dept. do the soldering.  A couple of issues came up.  One is that the pattern on the Adafruit adapter doesn’t match the screen printing on the board… but the bigger issue is that the artel/main chip looks l…[Read more]

I replaced the battery with a new one when I started this process of trying to revive the Mayfly.  The original battery may have still been good, but it was several years old and the unit has been sitting for a year or so – so I figured it would be best to start fresh with a new battery.

The board doesn’t have a modem so time…[Read more]

Thanks for the info.  I downloaded the drivers at the link provided and restarted my computer but still no additional ports appear when Arduino is open and the mayfly is connected, turned on.

I’ve ordered a new micro usb/usb-c data cable that should be arriving today.  This will let me check on 2 variables; 1) it will allow me to h…[Read more]

This is way over my head and I am so grateful for your time and help but I feel like I am just going in a circle

Dunnoh.

The serial monitor does not show any text but the boards manager shows Mayfly 1284p.

I’ve tried 3 different micro usb cables and none of them have had the Mac ask for a port for the Mayfly

Then I followed the steps above and am s…[Read more]

There are preloaded sketches for temp, depth, turbidity, and conductivity from the board’s previous deployment.

I set the baud rate following the instructions in the on-line mayfly manual.  I’ll go over your tutorial and let you know if that succeeded in smartening me up.

thanks again!

I’ve tried uploading a sketch (various ones) and get a not in sync error message that repeats 10x.  Entire error message below…

Now don’t kick me, but I don’t know what “looking at it through a serial monitor” means.  I do have it set to 57600 baud.

the port reads as follows (on my MacBook) p…[Read more]