All content on EnviroDIY is licensed as Creative Commons Attribution-ShareAlike 4.0. Hardware designs on EnviroDIY are released under the CERN Open Hardware License 1.2. Alternative licenses are available. Learn more
Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of WikiWatershed, a web toolkit designed to help citizens, conservation practitioners, municipal decision-makers, researchers, educators, and students advance knowledge and stewardship of fresh water. New to EnviroDIY? Start here
Community Activity See all activity
Jane became a registered member 1 day, 13 hours ago
Jane
@buckje123
Jordyn MSUHydrogeology became a registered member 1 week, 1 day ago
Jordyn MSUHydrogeology
@msuhydrogeology
Shannon Hicks replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 week, 1 day ago
The sensor manufacturer has assured me that the sensors will work at 3.3v, and we’ve had experience with hundreds of them and concur, but they’ll also work just fine with the jumper set to 5v instead, so it’s your choice.
This thread is for overall technical questions about the hardware on the Mayfly v1.1 boards, so if you have other questions…[Read more]
Jim Moore replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 week, 2 days ago
@shannon I noticed that the specs for the Hydros 21 indicate 4.0 volts minimum. The junper on the Mayfly board is set for 3.3 V. Would you recomend changeing that to 5.0 Volts?
Jim Moore replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 week, 2 days ago
Thanks! I’ll plug that into my code.
-jim
Sara Damiano replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 week, 2 days ago
@w3asa Did you look at this example: https://github.com/EnviroDIY/ModularSensors/tree/master/examples/DRWI_Mayfly1. I think it’s almost exactly what you want.
Jim Moore replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 week, 3 days ago
@shannon I am setting up a new sensor station using the hydros 21 (due in tommorow) but I am not using the turbidity sensor. I deleted that section of the code but I wanted to add the humidity sensor. What do I need to put in the variable list? Here is what I have:
Variable* variableList[] = {
new MeterHydros21_Cond(&hydros),
new Me…[Read more]
Shannon Hicks replied to the topic 1.1 revB and Clarivue 10 Turbidity Sensor in the forum Mayfly Data Logger 1 week, 4 days ago
The Mayfly makes 3.3v, 5v, or 12v, as set by the jumpers on the headers next to each Grove socket. The ClariVue sensors need 9 or 12v, but at lower temperatures (below 5C) we’ve found that some of the sensor will stop working because the Mayfly can’t produce enough current at 12v at low temperatures. So to fix this issue, you can just change t…[Read more]
joeln became a registered member 1 week, 4 days ago
joeln
@joeln
Sara Damiano replied to the topic Grove 4 pin terminal board in the forum Mayfly Data Logger 1 week, 4 days ago
To close the jumper on the Mayfly, you need a soldering iron. If you don’t have access to one of those, you might need to go back to the trinket.
You could also order a replacement pendant logger from Onset: https://www.onsetcomp.com/products/data-loggers/ua-003-64