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Hi again, Sara. Just wanted to check in and see if you had any success with this. I would like to be able to finish up the programming of the board so I can finally get it in the field to start collecting data. Thank you!

Hi,

As it seems the Enviro lib still have the same problem with the CS215, I think I actually found a fix, so i wanted to share it with you guys.

I’ve updated the Arduino thread linked in the first post. But I’ll put the same explanation here:

The Enviro lib does not fully respect the SDI-12 protocol. There is one important timing aspect which…[Read more]

Finally got back to this project…

The 6AA battery pack is wired to the “Ext 4-12V” solder pads.  The voltage divider consists of a 989K resistor soldered to the battery positive lead, connected to a 324K resistor, which is connected to Pin 20 (GND).  The connection between the two resistors is connected to both Pins 2 and 7.  I attached a sch…[Read more]

Anyone knows where one can buy a Mayfly board nowadays? Amazon won’t ship outside the US, at least not to Europe. Been looking everywhere to no avail.

-juha

Hi Neil,

Thanks for opening up this important topic, and for sharing your work!

This idea of scaling up one’s Mayfly installations is really coming to the fore at my organization, Trout Unlimited (TU). My colleague Jake (@jlemontu-org) has been working with Stroud for a couple of years now to deploy Mayflys with volunteer groups in Michigan,…[Read more]

Sorry forgot to add the links: GMI_test and GMI_EC1.  The other sites GMI_ECx are currently manual upload.

Hi Jim. Thanks for the description.

What the ‘ini’ reader does is read a file on the  Mayfly microSD card called ms_cfg.ini – in that file is all the configuration information that is specific to a particular node “station” as when the MMW sensor UUIDs are created.

What this does is allow your .ino file to be compiled once to a .HEX, with no…[Read more]

<h4 class=”user-nicename”>@chuckkir</h4>
Thanks Chuck for offering to help with my coding issues.  I have two sets of code that I am currently testing with my Low Cost Sensor Station.  Simple_logging.ino is working on my mayfly platform which I am using to test the compensation routines to convert the raw data from the AtlasScientific EC sensor a…[Read more]

I am currently working on setting up an array of Low Cost EC sensor Stations in Great Marsh, N. Chester County to monitor UNTs flowing into this large wetland.  My current issues are compensating the raw sensor data to µS and ºC.  See my forum thread.

I currently have six stations and will probably add more all using the the same operating cod…[Read more]

Hello Sara,

I just wanted to check in to see if you have had any luck with updating the libraries for this. Thanks.

I usually leave the ADS1115 in its default gain setting (which is 0.1875 mv per bit), which is more than sufficient for most measurements.  If you do that, you can easily calculate voltage by using these two lines:

adc0 = ads.readADC_SingleEnded(0);
voltage = (adc0 * 3.3)/17585.0;

If you’re using a voltage divider, you’ll need to add an…[Read more]