fisherba

Noted. Thank you. This is in my next couple weeks of existence.

The CTD does not allow an internal calibration, but we do a calibration in the lab with conductivity standards and apply the calibrated data as a calculated variable.

This is maybe semantics, but the Mayfly wouldn’t be a source of quality (or the lack thereof). That’s the sensor’s job. CTDs are usually pretty durable.

Here’s a video of the process of installing the driver:

https://mediaspace.minnstate.edu/media/Mayfly+driver+in+Arduino+IDE/1_py60bdus

Nope. The instructions here: https://www.envirodiy.org/mayfly/software/ say to not use 2.0. I don’t use the Arduino IDE for anything but getting people started. But the tutorial I sent will lead you to this Mayfly driver and through a whole set of steps that will get you up and running. It may look TLDR, but I think it will help.

If the usb port doesn’t exist, then the most probably cause is that the driver is not installed or not valid/current.

Mine looks something like this:

The Mayfly doesn’t have a bluetooth radio built in, so that port is not actually the one that is connected to a Mayfly. The bluetooth port is everpresent on Macs because you have bluetooth on your computer, but the Mayfly would require an extra radio to be able to connect by bluetooth. This is not the correct port to view what’s happening on the…[Read more]

Did Blink successfully upload? The mayfly can only handle one sketch at a time. The fact that your board is flashing in the ways you describe means that it is probably not fried.

As far as I can detect, you have not yet connected to your board. The serial monitor would be a way to connect to any board and see what’s on it. There are lots of…[Read more]

If the existing sketch is from the EnviroDIY Modular Sensors code wrapper, the serial baud should be 115200. In the arduino IDE, connected with usb, mayfly power on, if you press the little magnifying lens at the top right corner of the window for any sketch, that will open the serial monitor. You should be prompted to manually select the port…[Read more]

The bluetooth port is not your mayfly.

I did this tutorial that could get you acquainted with the serial monitor: https://envirodiy.github.io/LearnEnviroDIY/01-ArduinoBasics/index.html

What’s uploaded on your Mayfly will determine the baud rate for the serial monitor. It looks like you haven’t uploaded anything yet, but there’s an existing…[Read more]

What software are you using to connect? What are you doing to confirm that it isn’t connecting? Are you trying to upload a sketch, or are you looking at it through a serial monitor?

Have you confirmed the com-port? A PC will number the com ports sequentially (a new port for every Mayfly you connect). A Mac will have a long string assigned to the…[Read more]

Hi Dave,

Don’t kick me for this, but is the Mayfly turned on? There’s a little toggle switch near the USB jack.

Sometimes they do get “fried” and others know the trouble-shooting steps better than I do, but I see users missing the on-off toggle a lot.

Beth

I had a hunch that it was a no-go, but I thought I’d ask. I’ll just log to the SD card for in-lab monitoring. And for workshops we will use hotspots.

Thanks!

@shicks have you read their current product specs? Don’t take my word for it.

The sensors the student ordered have the stereo plug and a red cable.

@neilh, we have a calculated temperature compensation in Modular Sensors if you ever need it. It’s extremely negligible in groundwater temp ranges.

@mbarney, the Meter discrepancy is a bit annoying. Was your March order a bare wire or stereo plug?

There’s an example sketch in the Modular Sensors GitHub Repository with a calculated variable correction for water temperature (really it’s density, so it’s called rho and density in the sketch) that uses data from a temperature sensor. The same sketch has a calculated barometric…[Read more]