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All content on EnviroDIY is licensed as Creative Commons Attribution-ShareAlike 4.0. Hardware designs on EnviroDIY are released under the CERN Open Hardware License 1.2. Alternative licenses are available. Learn more
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Braedon replied to the topic Mayfly v1.1 technical questions forum thread in the forum Mayfly Data Logger 1 years, 4 months ago
How do the analog pins found on the 20-pin header (pins A0, A1, A2, etc.) differ in function and purpose from the auxiliary analog pins (AA0, AA1, etc.)? From what I’ve seen, you need to connect analog sensors to the auxiliary analog pins and use an Adafruit library to get the millivolt readings because of an ADC they are connected to. I’ve…[Read more]
neilh20 replied to the topic Power usage of Mayfly1.1 with Hydros 21 cTD and LTE BEE cell modem in the forum Mayfly Data Logger 1 years, 4 months ago
Some recent posts here explain the current difficult environment for calculating power usage on the mayfly as its dependent on a fast response from the server.
https://github.com/ODM2/ODM2DataSharingPortal/issues/649#issuecomment-1561690674
My implementation is to ensure that there is sufficient reservoir of power in the battery for taking…[Read more]
Shannon Hicks replied to the topic Mayfly v.1.1 – Clarivue Turbidity Sensor in the forum Mayfly Data Logger 1 years, 5 months ago
There’s nothing to unsolder. Solder Jumper SJ25 has 2 small pads. By default, they are separated and not connected at all, and that makes the on-board boost circuitry output 12 volts. By putting a solder blob on SJ25 and connecting the 2 pads, you add some extra resistance to the circuitry that controls the voltage and it’ll output 9 volts in…[Read more]
Steve became a registered member 1 years, 5 months ago
Steve
@skaiser
EMayerRHA replied to the topic Mayfly v.1.1 – Clarivue Turbidity Sensor in the forum Mayfly Data Logger 1 years, 5 months ago
For clarification, 9 volts is stable – which requires de-soldering the 12 volt bridge and re-soldering the 9 volt bridge correct ? In the event all 3 soldering points are connected by accident what will the results be? Is there voltage protection or will it burn out the board?
Shannon Hicks replied to the topic Curious sensor failures and cyclical measurements in the forum Mayfly Data Logger 1 years, 5 months ago
Have you tried disconnecting one sensor at a time and seeing how the other one performs? We’ve found that sometimes when one sensors fails or “goes bad”, it can cause erratic readings or performance of any other sensor that’s also connected. By unplugging each sensor independently, it’s usually easy to isolate which sensor was the actual c…[Read more]
Shannon Hicks replied to the topic Mayfly v.1.1 – Clarivue Turbidity Sensor in the forum Mayfly Data Logger 1 years, 5 months ago
Is it a Mayfly 1.1 revB board? or a revA? That station seems to not have the usual 4.3v during the day that most v1.1revB boards get, and is more similar to the voltage one sees on a v1.0 or v1.1revA board. What solar panel do you have on that station, and is it in a very shady location, or is the panel pointed north?
All that being said, di…[Read more]
EMayerRHA replied to the topic Mayfly v.1.1 – Clarivue Turbidity Sensor in the forum Mayfly Data Logger 1 years, 5 months ago
https://monitormywatershed.org/sites/RHA03/
Again, there are readings sometimes throughout the day, but then not. So I’m not sure what is going on here.
Shannon Hicks replied to the topic Mayfly v.1.1 – Clarivue Turbidity Sensor in the forum Mayfly Data Logger 1 years, 5 months ago
-9999 is not an actual reading from the sensor, it’s what the Mayfly stores as the value when it doesn’t actually get a valid number from the sensor. You’d see the same thing is no sensor was attached to the Mayfly at all. What is the MMW station name or URL?
EMayerRHA started the topic Mayfly v.1.1 – Clarivue Turbidity Sensor in the forum Mayfly Data Logger 1 years, 5 months ago
Hello,
We installed the new v.1.1 boards with a CTD sensor and also added the Clarivue Turbidity sensor. On the MMW platform it shows the turbidity sensor as reporting with a green background for the graph display, but the readings show as -9999.99 (which usually means its an error). Though when a large rainstorm comes through, it does report…[Read more]