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I assume you are using a Mayfly v1.1 board and not an older v1.0, because it had a hard time providing a stable 12v for that particular type of sensor.  But are you using the onboard 12v source by selecting 12v on the Grove voltage selector jumper, or are you using one of the new screw terminal boards that has its own 12v boost circuit on it?

There are no workshops scheduled yet for 2025, but you can review past events and check in from time to time for new events under the Participate tab, https://www.envirodiy.org/envirodiy-events/.

That all looks correct.  I usually put the Mayfly’s analog Grove jack voltage selector jumper to the 5v position because the old sensors required 5v for excitation, but supposedly these newer ones are happy with 3v to 15v, but we still use them at 5v and calibrate them with that excitation voltage.  If you connect the 6-pin screw terminal board s…[Read more]

Shannon,

I attached a picture of how I am connecting the C-FLOUR to the multipurpose screw terminal board. Can you let me know if this is the correct wiring and resistor amount, type, and location?

Thank you.

Hi,

Was a firewall at my school…got it fixed now. Thanks a lot!

The file is there.  Is your computer behind a firewall that is blocking github?  What happens if you click on the link for the EnviroDIY json file?  You should see a simple text webpage with some code talking about packages and platforms.

Can you email me your code at mayfly@envirodiy.org so I can take a look at it?  How many other adafruit ADC boards do you have attached to the Mayfly in question and are they the 12-bit or 16-bit versions?  The Mayfly’s ADC is permanently set to 0x48.  What is the typical and maximum voltages you should see on the sensor?

The two sensor models perform exactly the same.  We’ve used a couple in the field with existing loggers when replacing some old broken Cyclops 7f sensors.  All we did was swap the sensors and redo the calibration and edit the appropriate 2 lines in the code for the voltage measured in the standard and the blank (nanopure water).  The C-FLUOR se…[Read more]

<div>Hi Shannon,</div>
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<div>I ordered a C-FLOUR not realizing that the modular sensor library only has compatibility with the Cyclops-7F, even though you mentioned the Cyclops in your earlier post.</div>
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<div>Based on what a rep has told me, Turner is starting to phase out their Cyclops-7F sensors and replacing them with…[Read more]

Hi Shannon and Sara,

Thanks for taking a look at this. I actually JUST fixed it, and I’m not sure what I did correctly?

Nothing I did was able to wake the modem, and like Sara said, it wasn’t receiving power. I was in the midst of taking those photos you request Shannon, and I think just unplugging everything and plugging it back in fixed it……[Read more]

Thanks. Temperature coefficients, compensations – that’s interesting. I have the sensor sitting in a bucket of stream water right now – should see more rapid changes in temperature. I’ve a note into the METER Co.

I did some blog posts in 2016 with a number of depth sensors that quoted an error for a very wide temperature compensation. They where the Insitu LT500 (best), Keller Nanolevel, Keller Acculevel, Keller Level gage (worst).

I setup a situation with the depth sensors in a jar of water (low depth)  with a good solar aspect to test how well they met…[Read more]