Shannon Hicks

The UUIDs for the various parameters are generated by the MonitorMyWatershed website.  When you created the site for your particular station, you had to manually add whatever parameters you were interested in receiving from the Mayfly logger.  It looks like you added the 3 parameters for the Hydros21 and one turbidity parameter for the OBS3 s…[Read more]

Did you download the libraries.zip file correctly from this page carefully following the instructions in the Readme:  https://github.com/EnviroDIY/Libraries

and then confirm that all 42 folders are in your Arduino/libraries folder (not nested into a sub-folder called “Arduino/libraries/libraries”) and that the folders contain actual files are…[Read more]

The example code for a CTD/OBS3/SIM7080 station can be found here:  https://github.com/EnviroDIY/ModularSensors/tree/master/examples/DRWI_SIM7080LTE

The only changes you’ll have to make is to enter the turbidity sensor calibration information in the correct place (lines 157 to 186), give the logger a unique name in line 59, and enter your UUID…[Read more]

It’s likely that you deleted something important and that’s why the code isn’t working properly.  What sensors are you trying to use with your logger?

There’s a list of sensors currently supported by the ModularSensors libraries listed on the Github repo for ModularSensors:  https://github.com/EnviroDIY/ModularSensors?tab=readme-ov-file#supported-sensors-

Rather than create a new forum post for this issue, I’ll just add to this thread from last summer.

Today (January 22, 2024) there has been a widespread nationwide (USA) cellular network outage that has been affecting users of all the major wireless carriers, including the ones used by Hologram (the company that most of the EnviroDIY stations…[Read more]

We’d need more information in order to troubleshoot your problem.  Are you using an EnviroDIY Mayfly board, and if so what hardware version do you have?  What cell or wifi board are you using?  What Arduino sketch are you using on the board and are you using it mostly as-is, or did you rewrite any part of it or the supporting libraries?

I found a schematic in your github repo, my suggestion would be to power everything external to the Mayfly with its own beefy power source, especially the relay bank.  It looks like you’re currently using the main 3.3v regulator of the Mayfly to power the relays and maybe some other things, which is probably what’s causing the brownout.  There’s a…[Read more]

What version of the Mayfly board are you using?  And how are you powering the Mayfly?  Is the Mayfly providing the power for the sensor and vacuum pump too, or is that from a different source?

You could also try putting an ammeter in line with the main battery (with no solar or USB connected) to monitor the current of the board during use.  When it’s sleeping, you should see a current of about 0.6mA  for your configuration.  If you measure a sleeping current above 1mA, then something is probably wrong, either the board isn’t properly sl…[Read more]

They’re spring-loaded quick connect jacks.  The wires go in the round holes not the rectangular ones.  If you tug on them and they don’t come loose, then they should be connected properly.  If they pop out, then you’ve just got to insert them further.  I usually use my fingers, but you could also use something like needle-nose pliers to push one…[Read more]

A description of the operation of the LEDs on the Mayfly board can be found here:  https://www.envirodiy.org/mayfly/hardware/details-and-specs/

For the one you asked about, it’s under part C:

C- Power LEDs and DIP switches:  LEDs indicate board power (green) and USB power (orange).  Useful for easily seeing if the board is on and if USB power is…[Read more]

The Yosemitech Y-511A needs 12v to operate, so it won’t be happy if you modify the Mayfly jumper to set the 12v output to 9v.  I’m not familiar with the operation of the modbus wing you’re using so I can’t comment on its operation, but we have a new modbus adapter board with it’s own beefy 12v-boost Grove adapter board that will be available in…[Read more]

There should be little adjustment screws or stops that allow you to calibrate the sensor to tip at exactly one millimeter of rainfall (which is 5.0 ml of water).  Did you try adjusting them and doing the calibration procedure before deployment?  You also have to ensure that the sensor is installed completely level and that it is mounted to a f…[Read more]

Can you share the model number and manufacturer of the rain gage, or attach a picture of it that shows the tipping mechanism?

It sounds like things aren’t connected to the Mayfly board properly.  The 3.7v Lipo battery gets connected to only one of the JST jacks labeled LIPO BATT on the Mayfly board, then a 6v solar panel gets connected to only one of the jacks labeled either SOLAR1 or SOLAR2, and not both.  Are you using one of the old style glossy 3.5w panels, or one o…[Read more]

The very bottom-left corner of the schematic for board v1.1 mentions the two charge rates, which you can control using solder jumper SJ15.  Here’s the description of that jumper from the Jumper Settings page:

SJ15:  Lipo battery charge rate:  500mA (default) or 1A.  This jumper allows you to select the maximum charger output current of the onb…[Read more]

If your sample/transmission rate is set to 15 minutes and you were getting that poor of a battery life out of your stations, then they definitely aren’t going into sleep mode, so I’d suggest investigating the code that’s running on the Mayfly to learn more about its behavior.

James, your station seems to be using power at a rate much higher than a usual CTD station.  Our Mayfly v1.1 boards with EnviroDIY sim7080 LTE board and a CTD sensor will see a decrease in the battery voltage overnight of 0.045v during a 12 hour period with absolutely no sunlight, and transmitting the data to the portal every 5 minutes.  Your s…[Read more]

What version of Mayfly board do you have?  And what brand of cellular board?  There are a lot of combinations of hardware on EnviroDIY stations, and some are much more efficient than others.  Also, do you have a spare Lipo battery that you can fully charge separately in your office and then put it into the station?  If your logger is only wor…[Read more]