James_NZ

Thanks @shicks, great to know. Would you recommend that I push back on them for Gen-2 sensors, even if they take a bit longer to get here? It seems silly to rush things through and end up with an inferior sensor.

James

Hi @dan-wachusett. I am about to order 10 x Hydros 21 units from METER Group. I assume they will be Gen 2 (cost $511 USD each).

Is someone working on the modular sensors library? Any idea how long it will be before the Gen 2 can be used?

James

Another question worth pondering is whether brushed sensors are desirable over un-brushed sensors in lotic environments? Perhaps the difference in performance is more apparent in lentic systems where fouling is more likely to occur?

Has anyone compared the performance of brushed vs un-brushed sensors?

James

Hi Neil,

I have read through the link above and everything is making a lot more sense.  I think your effort in designing a new modbus wingboard is amazing!

However, I am in two minds given my current situation which requires deployment of 10 Mayfly stations within the next 3 months.  Obviously waiting for your wingboard is the more reliable o…[Read more]

Hi Neil,

I’m looking to deploy a network of Yosemitech turbidity sensors (Y511-A) and for this I will need modbus wingshields. Can you explain what the issue with the current wingshield build is? I have read a conversation about the polou 9v step up regulator not being able to activate the 511-A brush, but I’m not aware of other problems. I’m…[Read more]

Hi all,

Sorry to be another squeaky wheel but we’re after LTE adapters too. I plan on making a purchase of 10 x Mayflies and 10 x LTE adapters as soon as these are available. Can someone please tag me with any update.

Cheers,
James

Thanks @shicks. COVID has meant that not everything is available at my end of the world, so I need to compromise sometimes!

Thanks @neilh20. I will definitely be interested in these when they are available.

@aufdenkampe do you have any feedback about YOSEMITECH turbidity sensors? My questions are:

1) Are they as reliable as other turbidity sensors, i.e. do they drift more readily, or provide strange values? For $510USD (non-wiper) or $680USD (wiper), they seem…[Read more]

Hi @shicks.  I need a number of turbidity sensors for an upcoming project, and I have a reasonable quote from Yosemitech (~510USD each).  What additional interface hardware are you referring to for the Yosemitech probes?  Has anyone tested them and can vouch for their accuracy?

Hi everyone,

Just a quick update.  The 100k voltage divider worked perfectly. My new voltage water level relationship is below.

Thanks again for your help @shicks.

James
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Hi all,

Just an update. I sent an email to the tech support team at Millonetech, and we were able to confirm that the eTape sensor I am using is not a resistance to voltage module (as I suggested above), but contains a simple voltage divider. This version works fine with 5v VCC, so that is not a problem.

I purchased some 100k resistors and…[Read more]

Hi Shannon,

Yes using the Mayfly ver 0.5b.  I am using the ADS1115, and reading 50 ADS readings at 50us intervals and storing them in an array.  I am then taking the median of the array and multiplying by 3.3 before dividing the whole thing by 17585.0.

I have the Mayfly jumper on the ADC section set to 5v rather than 3.3.
<div class=”yj6qo”>It w…[Read more]

Hi Sara,

I worked through this and everything compiles correctly now!  Thanks for your help.

I did wonder about the linter in Atom.  From what I have read there seems to be an issue with linters working with .ino files in Atom.  Have you guys found anything that works?

James

Thanks @srgdamiano! I will try again when I get home from work.

I am using Atom with PlatformIO. How do I turn the linter tools on? thanks also for the tip on ‘extVoltage’. I was going to write a function that did the same thing as the unnecessary repetition was starting to bug me!

James