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WFUWater replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
Thank you so much for the quick response! Could you detail how to make sure we are supplying the 12v to the ClariVue? That being said I am still a bit confused as to why the Hydros 21 would read as vacant when it is the only sensor connected during testing and it would run regardless of the voltage.
Shannon Hicks replied to the topic Clarivue10 data logging problems in the forum Mayfly Data Logger 1 year, 9 months ago
When the sensor is powered, you should be able to put the two probes of a voltmeter on the little screws on top of the screw terminal board where you’ve connected the ClariVue’s cable to the Mayfly. Put the black probe on the Gndscrew and the red probe on the V+ screw. You’ll know the sensor is being powered when the red LED on the bottom le…[Read more]
Shannon Hicks replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 year, 9 months ago
The calibration sheet from Turner was very accurate for the new sensor, so if you don’t want to buy expensive rhodamine standard right now, you’re probably fine to use the data from the sheet. But we’ve found that the sensors tend to drift over time so we do quarterly recalibrations of the sensors to make sure they’re still accurate.
Here’s a…[Read more]
Shannon Hicks replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
Both of those sensor models ship from their manufacturers with their SDI12 address set to ‘0’ (zero). In order for the Hydros21 sensor to work with the Mayfly logger in SDI12 mode, you MUST change the address of the sensor to anything other than zero (otherwise the sensors is in TTL output and not SDI12). It’s okay for the ClariVue sensor to r…[Read more]
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
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nick replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 year, 9 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, 9 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, 9 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, 9 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/.