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James_NZ replied to the topic Hydros 21 Gen 2 -9992 values in the forum Environmental Sensors 1 years, 7 months ago
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
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James_NZ replied to the topic Hydros 21 Gen 2 -9992 values in the forum Environmental Sensors 1 years, 7 months ago
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
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James_NZ replied to the topic Hydros 21 Gen 2 -9992 values in the forum Environmental Sensors 1 years, 8 months ago
Hi Shannon (@shicks),
Thanks for your reply, and apologies for not replying sooner. My replies to your message are in bold:
- 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. – <…
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James_NZ started the topic Hydros 21 Gen 2 -9992 values in the forum Environmental Sensors 1 years, 8 months ago
Hi everyone,
I have a strange error where my brand new Gen2 hydros sensor is reading -9992 for depth and conductivity. Temperature is fine. I have three other Gen 2 sensors deployed and they all seem to work okay (although they too have negative value drop-outs on occasion).
I am using a Mayfly 0.5 board, and this happens in isolation of o…[Read more]
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James_NZ replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 1 years, 10 months ago
@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.
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James_NZ replied to the topic Please Help! Meter CTD Gen2 being blocked by Yosemitech 511-a in the forum Environmental Sensors 1 years, 10 months ago
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]
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James_NZ replied to the topic Please Help! Meter CTD Gen2 being blocked by Yosemitech 511-a in the forum Environmental Sensors 1 years, 10 months ago
@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
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James_NZ replied to the topic Please Help! Meter CTD Gen2 being blocked by Yosemitech 511-a in the forum Environmental Sensors 1 years, 10 months ago
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]
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James_NZ started the topic Please Help! Meter CTD Gen2 being blocked by Yosemitech 511-a in the forum Environmental Sensors 1 years, 10 months ago
Hi everyone,
This problem has been causing me trouble for nearly a year, but it has become unworkable with installation of Gen2 Meter CTD sensors.
My problem: Meter CTD (SDI12) and Yosemitech 511-a Turbidity (MODBUS) sensors seem to interfere with each other causing the CTD to sporadically drop out return -9999 values. This only occurred at some…[Read more]
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James_NZ started the topic Yosemitech Y511-A Wiper Problem in the forum Miscellaneous 2 years ago
Hi all,
I have one Yosemitech 511-A sensor that turns on the wiper for approximately 30 seconds with each measurement. The wiper doesn’t move from side to side either, it rotates in a continuous full circle for the full 30s.
Has anyone experienced this? Is this a hardware fault?
James
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James_NZ replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 2 years ago
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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James_NZ replied to the topic Linking two Mayfly Boards Together in the forum Mayfly Data Logger 2 years, 2 months ago
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]
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James_NZ started the topic Linking two Mayfly Boards Together in the forum Mayfly Data Logger 2 years, 2 months ago
Hi,
I am having problems with the interference between MODBUS and SDI12 sensors on a Mayfly v0.5 board. I can remove either one and the other works perfectly, but together I end up with around 20% -9999 values, usually for the SDI12 CTD. I am virtually certain this has to do with the home-made modbus wing that I have built for this system. I…[Read more]
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James_NZ commented on the post, How Do EnviroDIY Monitoring Stations Compare With USGS Stations? 2 years, 5 months ago
Hi Scott, interesting article! Regarding turbidity, Rob Davies-Colley, an academic here in NZ has been doing some research comparing nephelometers, as turbidity thresholds are often written into environmental […]
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James_NZ replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 2 years, 7 months ago
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
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James_NZ replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 2 years, 7 months ago
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
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James_NZ replied to the topic 2022 EnviroDIY Hardware Status and Availability in the forum Mayfly Data Logger 2 years, 7 months ago
Hi Shannon,
Do you have any idea when the RS-485 half shields are likely to be in stock?
James
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James_NZ replied to the topic Mayfly with Xbee MTech mDot LoRa module in the forum Mayfly Data Logger 2 years, 8 months ago
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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James_NZ replied to the topic Hydros CTD-10 Regularly Dropping Out (-9999) in the forum Environmental Sensors 2 years, 9 months ago
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James_NZ replied to the topic Hydros CTD-10 Regularly Dropping Out (-9999) in the forum Environmental Sensors 2 years, 9 months ago
@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]
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