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Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of WikiWatershed, an initiative of Stroud Water Research Center designed to help people advance knowledge and stewardship of fresh water. 
Community Activity See all activity
WFUWater started the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
Hello, I’ve recently been working on programming the MayFly data logger. After completing the code (or what I thought was completing the code) and connecting it to MonitorMyWatershed, I am reading -9999 from both the ClariVUE 10 sensor and the Hydros 21. I believe that both are physically connected properly. I think that it might be an issue…[Read more]
WFUWater became a registered member 1 year, 9 months ago
WFUWater
@wfuwater
nick replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 year, 10 months ago
Shannon,
Thank you for the confirmation and write up for the sketch setup. I just have the phycocyanin C-FLUOR. This is my first time soldering, so I’m practicing on another board before I commit on the MP screw terminal board.
Have you notice big differences between the calibration sheet versus your manual calibration? And for the manual…[Read more]
Elliot Ma replied to the topic Clarivue10 data logging problems in the forum Mayfly Data Logger 1 year, 10 months ago
Yes we are using a Mayfly v1.1! As for the 12v source, I am not too sure. I did not put the board together originally so it’s been operating how it’s been since it was put into place.
I will be back soon to check on it again with a voltmeter. Could you explain how I can check if it’s using the correct 12v configuration?
Much appreciated,
Elliot
Shannon Hicks replied to the topic Clarivue10 data logging problems in the forum Mayfly Data Logger 1 year, 10 months ago
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?
Dave Bressler replied to the topic Monitor My Watershed Classes in the forum Monitor My Watershed 1 year, 10 months ago
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/.
Shannon Hicks replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 year, 10 months ago
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]
nick replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 year, 10 months ago
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.
Elliot Ma started the topic Clarivue10 data logging problems in the forum Mayfly Data Logger 1 year, 10 months ago
We installed a ClariVUE10 turbidity sensor with a data logger in a creek a couple of months ago. It was working well and uploading data to MonitorMyWatershed.org without issues until 10/17, when it started reporting -9999 values for turbidity. We’ve verified that the sensor wiring is intact, and the internals of the logger appear to be f…[Read more]
Jonesy replied to the topic Can't add EnviroDIY ATmega Boards in the forum Mayfly Data Logger 1 year, 10 months ago
Hi,
Was a firewall at my school…got it fixed now. Thanks a lot!