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Understood.  I added Arduino to programs that can open ports/get past firewall on the Mac but is still only showing the same bluetooth port info for the Mayfly.  I just did a quick search online and other folks have been having this problem too.

Dunnoh.

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]

so I thought I’d try it with the micro sd card removed… then I captured the following images of the Arduino program and the serial monitor – but still no port prompt, although mayfly appears to be “seen”

I was not able to get Blink uploaded – even at the baud rate recommended.  I verified it but still got the same “not in sync” error message as above

The serial monitor does not show any text but the boards manager shows Mayfly 1284p.

I’ve tried 3 different micro usb cables and none of them have had the Mac ask for a port for the Mayfly

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]

I’m sorry, I’m not getting it to work.  It seems like I am missing something simple but I’m still just getting the same error message as before.  I tried doing the blink tutorial and it didn’t work – serial monitor didn’t show anything even when switched to 9600 baud – and still had the same error message.

Then I followed the steps above and am s…[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]

Thank you.  I’ll check out the tutorial.

There are preloaded sketches for temp, depth, turbidity, and conductivity from the board’s previous deployment.

I set the baud rate following the instructions in the on-line mayfly manual.  I’ll go over your tutorial and let you know if that succeeded in smartening me up.

thanks again!

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]

I’m using Arduino 1.8.19.

I’ve tried uploading a sketch (various ones) and get a not in sync error message that repeats 10x.  Entire error message below…

Now don’t kick me, but I don’t know what “looking at it through a serial monitor” means.  I do have it set to 57600 baud.

the port reads as follows (on my MacBook) p…[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]

<div>Hi Beth,</div>
<div>No kicking involved when folks are trying to help!</div>
<div>I have tried toggling the on/off switch… no luck.</div>
<div>The leds do their flashy bit to let me know that the device is alive in there somewhere – and the amber light glows brightly to show that the battery is charging – but no communication b/t pc or…[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

Hi @shicks and @neilh20

I’m leaning more towards an interaction with the MODBUS wing.  I had one station that produced -9999’s constantly when the Turbidity sensor was plugged in, and operated fine when I removed the MODBUS wing.  This drove me nuts until Anthony pointed me towards the complex loop code where I set the Turbidity sensor to low a…[Read more]

@James ouch.  Looking at the data file, its just the Decagon CTD/SDI-12? readings that are responding -9999 . Typically that means the (SDI-12?) protocol has failed to communicate with the instrument.

At the same time Yosemite/Modbus? is responding well.

The CTD is only occasionally failing, or failing in groups, but still working some of the…[Read more]

We’ve seen that very rarely, usually it happens when the connection between the Mayfly and the sensor is bad, and the fault is either mechanical damage to the sensor cable (rodents chewing, flood damage, etc) or corrosion on the contacts inside the Grove stereo jack due to moisture inside the logger enclosure, or bad connection of the Grove cable…[Read more]