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With such a small max signal of 200 mV, you’d definitely want to use the ADS1115.  The default ADC range has a resolution of 0.1875 mV/bit, which is pretty coarse so you’d want to use a higher gain setting like 8 or 16.  At gain 16, there’s a max input of 256 mV, and a resolution of 0.0078125 mV/bit.  Just be sure the ADC input doesn’t see any…[Read more]

Thanks so much for the info.

At the moment, it is difficult to get my hands on an Apogee because of time constrains.

What do you think about using a voltage divider?

The Mayfly can only read analog signals from 0 volts to 3.3 volts, so you’re not going to be able to read something that puts out 5 volts.  But from what I can tell about that sensor from a brief look at the manual, it only outputs a maximum voltage of 10mv.  You’re supposed to use it with a separate amplifier if you want to be able to read it w…[Read more]

@mbarney Hello Matt,

I am running into a similar problem with my Maxbotix sensor code…having difficulty integrating the code into my DRWI modular sensor code…. do you mind sharing coding tips to add this sensor module?

The data is not being stored on the memory card. I think my code is incorrect is there a MaxBotix example that anyone successfully was able to run and pass data to the SD Card and MMW that I can look at?

Are you at least getting the ultrasonic sensor data to be stored on the microSD memory card but not on the website, or are you not getting any data from the ultrasonic sensor, even in the serial string that gets printed to the serial monitor after every reading?

Ah, I’m not able to help as I don’t code.

You can ignore the warnings to the serial monitor about the UUIDs if you never intend to send data to MMW.  The warnings are just there to help people in case they were using the generic ones when they didn’t intend to.  But since that’s what you want to do, it’s okay to ignore the warning.

I am going to using just the SD card for my project. I thought I would need a unique UUID regardless so that was my first attempt at trying for that. So if I am using just the SD I can ignore the Non-unique UUID message? what about the invalid UUID, can that be ignored too?

When you register a site on Monitor My Watershed you can set it up with various sensor parameters, and once you’ve got all of them entered on the website, you click the “View Token UUID List” button at the top of your site page and you’ll get a list of all the UUIDs in the exact format and order in which you need to paste them into your sketch. …[Read more]

In my code I have the yosemitech sensor set up but in the serial monitor it does not address the sensor at all? Why would that be. I am very new to programming especially the Mayfly data logger and platformio.

Yes, the server was restarted this morning and service returned to normal, however all stations will be missing about 11 hours of data from earlier today.