[Shannon Hicks]

The electronics themselves are rated up to 85 degrees C (185F).  We’ve never had an issue with the boards at high temperatures, it’s just that the lipo battery packs don’t really like extreme temps (either hot or cold) because they don’t charge efficiently.  Just doing a cursory check of random stations on Monitor My Watershed in warm climates, I see several stations where the temperature inside the logger box reaches 60C (140F) daily in the summer, so you shouldn’t have any trouble with yours, especially if you’re using a battery that can handle extreme temps, like an AGM.  As for the code, it’s hard to say whether it’ll be difficult or not, based on your coding experience and how well the commands and timing are documented in the literature provided by the manufacturer.

[Shannon Hicks]

A Mayfly Data Logger should be able to communicate with a LI-710, but someone would have to write a specific SDI12 library file of commands for that sensor, using the example command info in the manual.  It also looks like it’s a continuously-powered sensor, requiring 0.125mA at 12v, with up to 2A during initial startup.   I assume you’ll be powering it with a large 12-volt battery with its own charging setup, or maybe an AC-to-DC system, rather than relying on the Mayfly Logger for power?

[Shannon Hicks]

What sensor(s) are you using with the board?  Have you reprogrammed the sketch onto the Mayfly recently, or are you using a board that was programmed last year or earlier?   Some people seems to be having issues with boards not sleeping/waking properly using the most recently SDI12 libraries, so if you’ve recently reprogrammed the board, then that might be the issue.

[Shannon Hicks]

No, LiFePO4 batteries should never be used with a Mayfly board because the onboard charging circuitry is only designed to work with 3.7v Lithium Ion packs.  There’s a summary of important battery information and options here: https://www.envirodiy.org/battery-options-mayfly/

 

[Shannon Hicks]

I haven’t seen any other templates besides the one you linked.  I never use them myself, I just lay them out in whatever pattern is the easiest, based on the sizes of the cable glands.  I prefer to stagger them as shown in this photo from the kit’s shop page, since that makes it easier to get your hand around the end part to tighten them.  I use a socket to tighten the nuts on the inside of the Pelican case because an adjustable wrench can’t usually get in there to properly grip the plastic nuts.

[Shannon Hicks]

Are you referring to an EnviroDIY Monitoring Station kit which contains a Mayfly Data Logger, or is your station based on some other type of controller?  And are talking about limiting the amount of current your monitoring kit could draw from a power source, or are you talking about limiting the output current of the kit in regards to the load the kit can supply power to?

[Shannon Hicks]

There’s nothing electrically wrong with having all 4 resistors populated on that board, but only one pair will be used for your sensor analog input, and the other pair will not be connected to anything and will therefore not be performing any function.

[Shannon Hicks]

If you only have one C-FLUOR sensor, then you only need one pair of resistors, since there’s only one analog signal from the sensor.  There ARE two ground wires, which is why I asked how many sensors you were using with this one screw terminal board.  In order to connect two Turner analog sensors to a Mayfly Logger, it’s good to use 2 separate screw terminal boards, since each sensor needs 2 ground terminals.

[Shannon Hicks]

If your station is in an open location that gets several hours of direct sunlight every day, then a 2W panel is probably sufficient if you have a cellular modem on your station.  The 2W panel is definitely sufficient if it’s just a Hyrdos21 sensor and no telemetry.  But if your station is under tree canopy or is mostly shaded, the P105 model 5W panel is larger better at generating more current with less light.  You can buy them either directly from Voltaic Systems, or from Adafruit, since they also sell the exact same 5W panel (https://www.adafruit.com/product/5367).

[Shannon Hicks]

Are you trying to measure 2 analog signals from 2 separate sensors with just one 6-pin screw terminal board?

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