Shannon Hicks

I’m not sure what you mean by “The page says 12V is the default” because the default Grove jack jumper setting of the Mayfly v1.1 boards has always been 3.3v.  You have to manually move a jumper if you want to select 5v or 12v for the Grove jacks on the Mayfly v1.1 board.  So verify that the jumper next to the Grove jack you’re using for the s…[Read more]

There are instructions on the Grove jack jumper settings on this page, including a photo showing examples of what the jumper position would look like for the different options:  https://www.envirodiy.org/mayfly/hardware/jumper-settings/

What is the board version of the Mayfly data logger board that you’re using?  Did you set the jumper header next to the Grove jack to the 12v jumper setting?  Are you using the latest version of the EnviroDIY_SDI12 library?

I’d suggest trying a product called Goo Gone.  It’s a citrus-based adhesive/sap remover that is safe for use on plastic.  DO NOT use Goof Off, it isn’t safe for plastics and will damage the solar panel.  Rub a little Goo Gone on the sap and let it sit for a few minutes, then wipe it off and rinse it off with some soap and water.  It might take a c…[Read more]

<p class=”isSelectedEnd”>Yes, absolutely—we’d love for you to share it! One of the best things about the EnviroDIY community is seeing the creative ways people adapt the Mayfly and develop new hardware and software solutions for their monitoring needs.</p>
<p class=”isSelectedEnd”>A post describing your LoRa implementation would be very hel…[Read more]

The shield wire of the OBS3 sensor cable doesn’t actually connect to anything on the sensor, so it’s okay to leave that floating, especially if you’re just testing the sensor.  The green and black wires both definitely need to be connected to GND or the sensor won’t work properly.  Both the high range and low range should read around 0 NTU when t…[Read more]

It’s possible to use a battery that big, as long as the polarization of the JST connector is the same.  However, we rarely have the need for a large battery with our standard stations with sensors like CTD, turbidity, or oxygen, even with cellular telemetry ever 5 minutes.  If you use a really large battery, you have to make sure your solar p…[Read more]

Those old Campbell OBS3+ turbidity sensors will either flatline or go negative when they fail.  We started deploying dozens of that sensor model about 8 or 9 years ago and almost all of them have been removed from the field in the past few years due to failure.  It looks like your station is 8 years old so you got more life out of it than m…[Read more]

We’re really excited to partner with Labcrafter so they can be a source of our products to people in Europe.  As for sensors, the Maxbotix MB7389 you mentioned is probably your best bet for low cost ultrasonic rangefinding.  Just be sure to order the TTL version so it’ll work straight into the Mayfly board (the RS232 sensor would require an i…[Read more]

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]

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]

I personally haven’t used any Sandisk Ultras with our loggers, so I can’t say how it performs.  This guy did a really great test last year with a variety of microSD cards and summarized his findings (particularly on idle current) in a really helpful list:  https://neurotechhub.wustl.edu/micro-sd-card-low-power-showdown-part-ii/

Genuine Sandisk and Kingston cards have served us well, not drawing excessive power when the board is sleeping, and being reliable over many years in field deployments.  What we’ve seen issues with is generic cards from random manufacturers because they either fail and corrupt the data after a short time, or they draw 5 or 10 times more power…[Read more]

If you’re having trouble getting all the libraries to work happily together, you could try downloading all of the ModularSensors dependency libraries from the release files on github:https://github.com/EnviroDIY/ModularSensors/releases

You can scroll down that page and find the zip file at the bottom of each release summary (under the “Assets”…[Read more]

Are the 3 solder jumpers on the back of your 6-pin screw terminal board soldered properly?  We noticed a few of them came from the factory with no solder on them, so I soldered them in the “Default” position before shipping them out, but there’s a chance yours might have been missed.  You can also try closing solder jumper SJ25 on the back of t…[Read more]

The b_address_change sketch you attached looks like an older version, it doesn’t match the latest example you can find on our Github: https://github.com/EnviroDIY/Arduino-SDI-12

So make sure you’re using the latest Arduino-SDI-12 library files (download that directory from Github and replace whatever is currently in that folder on your PC.  And…[Read more]

This thread is for general technical questions about the Mayfly v1.1 board.  I don’t know what video you’re referring to, but I assume you’re using an example sketch from our Github repo or that was included with the ModularSensors library that you downloaded.  Any example sketch we provide should have a section near the top that says what h…[Read more]

The Sodaq_DS3231 library should work with the current Mayfly boards.  Here’s an example from a few years ago that does basic microSD card logging of the onboard sensors and doesn’t rely on ModularSensors:  https://github.com/EnviroDIY/EnviroDIY_Mayfly_Logger/blob/master/examples/mayfly1_TempHumidLight_simpleLogger/mayfly1_TempHumidLight_simpleLogger.ino

It sounds like you don’t have all the correct library files installed in your Arduino/libraries folder.  How many sub-folders do you have in that directory on your computer?  When did you last download the ModularSensors library dependency files?