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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 about licenses and attribution
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. Our EnviroDIY Mayfly Data Logger is user programmable and Arduino IDE compatible.
Get sketches, libraries, and documentation to help you program your Mayfly.
Share your data and access data from around the world on Monitor My Watershed®.
Have a question about DIY environmental monitoring? Share it with EnviroDIY members.
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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 about licenses and attribution
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Community Activity See all activity
caroline@wachusett started the topic Issues with Digi XBee 3 Global Modems in the forum Mayfly Data Logger 1 year, 1 month ago
Hello,
Our group ordered the Digi Xbee 3 Global Modems (XB3-C-GM2-UT-001) to connect to our Mayfly boards. We have a combination of 0.5b and 1.1 boards that we use in the field. I have been using a 1.1 board to perform tests on the new modems but I have not had any success uploading the data to Monitor My Watershed. I have attached the sketch I…[Read more]
Discovery_Center started the topic *Fixed* Modular Sensors Library Issues in the forum Monitor My Watershed 1 year, 1 month ago
For some reason when I try to insert Modular Sensors as a library and I select it, only loggerbase.h gets included. What can I do?
Heather Brooks started the topic EnviroDIY Workshop: Relocating and Updating a Monitoring Station in the forum Mayfly Data Logger 1 year, 1 month ago
There are a few spots left in the free, in-person workshop scheduled for Wednesday, September 10, 2025, at Stroud Water Research Center in Avondale, Pennsylvania. This workshop will focus on relocating a standard Stroud Center EnviroDIY Monitoring Station equipped with the Meter Hydros 21 CTD sensor; however, the skills apply to other contexts in…[Read more]
YorkCoMWS became a registered member 1 year, 1 month ago
YorkCoMWS
@yorkcomws
Nicholas Moran PG became a registered member 1 year, 1 month ago
Nicholas Moran PG
@namoran
okamran replied to the topic Cannot Connect to Internet with SIM in the forum Mayfly Data Logger 1 year, 1 month ago
Actually, I just had my SIM card upside down :/
But I appreciate you responding! Though I will also be starting to use the Mayfly/Hydros 21/Clarivue 10 combination, so I might have to keep in mind that you replaced the Clarivues with Campbells. If I may ask, what issue were you getting with the Clarivue 10s? Was it -9999 values and a bunch of…[Read more]
Elliot Ma replied to the topic Cannot Connect to Internet with SIM in the forum Mayfly Data Logger 1 year, 1 month ago
We solved this problem a couple of months ago but I’m still trying to remember what we did to do fix it.
If I recall correctly, the script we were using was outdated and we used an updated version from the github, and it worked for a while. But overall we did not have long-term success with the Mayfly + Clarivue10 combination. We eventually…[Read more]
Heather Brooks replied to the topic Could not wake modem for clock sync. in the forum Mayfly Data Logger 1 year, 1 month ago
@okamran Glad you were able to find and correct the issue! We appreciate you taking the time to post on the forum. It adds to the archive for other Mayfly users searching for solutions.
okamran replied to the topic Could not wake modem for clock sync. in the forum Mayfly Data Logger 1 year, 1 month ago
Turns out I did have my sim card upside down! The gray part of the hologram is supposed to be facing upwards, not the white part. Now nothing is broken, except for my pride…
usuaggie started the topic Acclima TDR sensors in the forum Mayfly Data Logger 1 year, 1 month ago
Hello,
I’m putting together a soil moisture profile station and I’ve been struggling to get readings from my acclima TDR 310-N and 315-N sensors using the mayfly. I’ve gotten the mayfly to recognize that the sensor is there but cannot get it to provide correct readings. Any advice or code anyone has that has worked?
Thanks