Activity – EnviroDIY

caroline@wachusett started the topic Mayfly MicroSD card not recording properly in the forum Mayfly Data Logger 4 days, 1 hour ago

Hello,

We’ve had a Mayfly station that had the Mayfly board (version 1.1a) replaced in April of 2025. We download the data monthly and the board has been working well up until this spring. When I checked the data for April, the microSD card (8 GB SanDisk Edge) had multiple file extensions I have never seen (see photo from May 6th). The microSD…[Read more]
Sara Damiano replied to the topic Secure Client for DigiXbee in the forum Mayfly Data Logger 2 weeks, 1 day ago

The ESP32 does. It’s also a currently supported product and very widely available. You can get very cheap ESP32 breakout boards in a variety of shapes and sizes. There are several flavors depending on how much power you need, but they can all do a basic secure post request. You could even use the older, even cheaper ESP8266.

If you’re usi…[Read more]
Sabin replied to the topic Secure Client for DigiXbee in the forum Mayfly Data Logger 2 weeks, 1 day ago

Thanks for the reply.
So, how do I even do POST request to server running on the web? Are there any Wifi modules that are alternative to Xbee that supports SecureClient?
Sara Damiano replied to the topic Secure Client for DigiXbee in the forum Mayfly Data Logger 2 weeks, 1 day ago

No. The S6B (wifi) does not support secure clients.
Sabin started the topic Secure Client for DigiXbee in the forum Mayfly Data Logger 2 weeks, 1 day ago

I am trying to send post request to playgrond.hydroserver.org – which requires Secure Client. Does secure client really works for DigiXbee S6b?
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caroline@wachusett replied to the topic Hydros21 Reporting -9999 on Mayfly 0.5b in the forum Mayfly Data Logger 1 month, 1 week ago

Hi Shannon,

Thank you for the response. I ran the board attached to my computer in Arduino and the red LED3 light did come on when the sample was run. I put a voltmeter across the GND and V pins and the voltage was 3.3v when the sample was collected.

The sketch on the 0.5b board is older than 2022 so that would explain why the new Gen2…[Read more]
Shannon Hicks replied to the topic Hydros21 Reporting -9999 on Mayfly 0.5b in the forum Mayfly Data Logger 1 month, 1 week ago

All Mayfly logger board from version 0.3 to the current v1.1 (and including your v0.5v) have a separate 3.3v regulator that powers external sensors, and also the 5v boost circuit. This secondary 3.3v regulator is turned on or off by controlling pin D22. When the regulator is turned on, a red LED in the lower left corner of the Mayfly should t…[Read more]
caroline@wachusett started the topic Hydros21 Reporting -9999 on Mayfly 0.5b in the forum Mayfly Data Logger 1 month, 1 week ago

Hello,

We have a Mayfly station with a version 0.5b board and a Hydros21 CTD sensor attached. The sensor had been working for years at the site but recently, the CTD measurements were being reported as -9999 for all three parameters. I tried troubleshooting and ended up swapping out the sensor for a new Hydros21 CTD sensor. Before deploying, I…[Read more]
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neilh20 replied to the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger 2 months, 1 week ago

Hello Kara, as someone who works with TU Mia and Troy in California, and deployed a number of systems north of San Francisco there are a few items to note.

From the description, you will need all the C++ code – the Arduino sketch , and tools setup. You might want to reach out to the original project and see if they have that code, and if it…[Read more]
Kara replied to the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger 2 months, 2 weeks ago

Hi Shannon,

Thanks so much for all the help, these were originally purchased by my organization in partnership with Trout Unlimited. TU did all the preliminary set up so the manuals I had on hand only covered field installation and troubleshooting.

It looks like we have Mayfly version V1.0 (according to our manuals) and our cell board is the…[Read more]
Shannon Hicks replied to the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger 2 months, 2 weeks ago

If you are physically relocating a monitoring station that reports to MonitorMyWatershed (MMW) then it’s best to create a new site instance on MMW for the new station. That way all the old data that was collected at the original location will still show up on the map at the original location. If you edit the MMW location for an existing site, t…[Read more]
Kara started the topic Relocating Data Loggers to new Sites in the forum Mayfly Data Logger 2 months, 2 weeks ago
Hi all,

I am trying to relocate my data loggers to new locations to monitor water quality at a restoration site. These data loggers have been used in the past at separate project sites and I have several questions about updating these to the new sites.
1. How can I update the locations? – is this something that needs to be done on Monitor My…
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