James_NZ

METER replied:

I am so sorry. That error means that there is some kind of error with the calibration of the sensor. I will have one of my colleagues reach out to you with a return material authorization (RMA)  to have that instrument brought in to have the issue fixed. 

James

Hi all,

Just an update.  I uploaded ‘d_simple_logger’ to see what is coming directly from the sensor.  It seems that the sensor itself is producing the -9992 values, rather than it being created somehow by the Mayfly.

I have contacted METER and they are looking into it.  I suspect the sensor is faulty.

James

Hi Shannon (@shicks),

Thanks for your reply, and apologies for not replying sooner.  My replies to your message are in bold:

1. Do you have one of the Meter ZSC bluetooth interfaces for setting and checking Meter Group sensors? They’re really handy testing and troubleshooting things like their CTD sensors, and for changing the SDI12 address.  – <…

[Read more]

@sofija I am using mayflies for my PhD research as well.  I’m really interested to hear what you are doing with them, and can also provide some advice on how to get equipment.

Hi @shicks and @srgdamiano.  You’re not going to believe it but the addition of the build flag below has fixed my problem, at least for the Gen2 sensors.

-D MS_SDI12_NON_CONCURRENT

I am certain it is this build flag and not the voltage pin (previously set to 5v) because I uploaded my script prior to switching the voltage pin over and it su…[Read more]

@shicks, would you mind publishing your Y-511a +  Gen 2 Hydros21 CTD code so I can ensure I haven’t done anything wrong on that front?

Thanks in advance.

James

Thank you both for your reply.  Okay, so it seems that I may be barking up the wrong tree with that one.  I will try Sara’s build flag to see if that works, but I’m not holding my breath.

I have my SDI12 jumper pins for the CTS set on 5v.  Could this be the problem?  For some reason I couldn’t get the Gen1 CTD’s to work at 3.3v, but they wor…[Read more]

I’m also still very interested in these wings.  The Pololu 12v Step-up voltage regulator has been discontinued and I’m struggling to build new wings.
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Hi @shicks (and thanks @neilh20),

Thanks for that.  I am using a Yosemitech Y511-A with a Hydros CTD (Gen 1).  My code is fairly similar to yours.  I notice that you use pin 22 to power the Y511 (line 145) where I have ‘-1’.  I also don’t see the line ‘<span class=”crayon-i”>AltSoftSerial</span> <span cla…[Read more]

Hi Neil,

I would only need 5 at this stage.  I would connect it to my Yosemitech turbidity sensors and potentially Yosemitech pH sensors as well.

Regards,

James

Thanks Shannon.  Please let me know as I will likely order a few of these and some mayfly 1.1’s.

Appreciate the hard work.

James

Hi Shannon,

Do you have any idea when the RS-485 half shields are likely to be in stock?

James

Hi @ddrummonrtp and @aufdenkampe,

I’m interested in using these mDot modules to connect with the Helium network.

Dale or Anthony, would you mind posting your code to integrate mDot modules with the Mayfly?

Thanks for your help!

Regards,

James

 
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@sgfulton  Thank you!

I will give this a crack.

Regards,

James

@shicks, thanks for your help anyway Shannon.  @aufdenkampe, any insight on the code above would be greatly appreciated.

@neilh20, yes all setups are the same.  Some work fine, others have issues with dropping out.  I have spare Mayflies and a spare CTD, but no spare turbidity sensor.  Did you ever end up producing your Mayfly wings for the 0.5…[Read more]