neilh20

Hello Mary, gosh you may have to provide more detail of what you are thinking you are doing. The tipping bucket is typically a pulse count – it needs to translate the mechanical tipping bucket to an electronic pulse.  So you may want to reference this in more detail.

There is this , never tried it . .. https://github.com/EnviroDIY/TippingBucketRainCounter

Hi Cal, great to hear you’ve got your problem solved.

Believe me that is part of the process, learning how the libs go together. They can be amazing to pull in,  – but its part of the programming paradigm of how to reference and track them.

Sometimes better to post a new thread when asking a question, and for programming its getting the focus…[Read more]

Hi Cal, its good if you could include the compile errors, even perhaps as an attachment. In your current form you are making anybody wanting to help do a lot more work.

As you are posting in this old thread on Yosemite-library I’m guessing its something to do with that.

I had a similar problem with Yosemitech Lib described here-…[Read more]

While browsing something else, I came across this ISCO 3700 references – no idea if its workable

https://github.com/EnviroDIY/Trigger

https://github.com/EnviroDIY/Trigger/tree/master/hardware/ISCO-Mayfly-Trigger

@khaase great to hear  – do you have a pn for the cap – be interested see what the internal ESR is.

Seems to me a way to monitor the battery for maximum life is to read the voltage unloaded, and then again when it is loaded.  The capacitor moderates the voltage reading, but still droops. So it would be how much droop (lack of charging from high i…[Read more]

@vogelrnws I had been looking at porting it to another processor and been using it and digging into the code. I’ve looked at some of the RP2040, but I’m cautious about its ability to go into low power – but haven’t looked at it in depth.

The SDI-12 lib uses a software based UART – running at 1200Baud, so 1200Baud is pretty slow and it does handle…[Read more]

@hannahlb if I understand you – you have 4 geographically distributed ISCO samplers (say more than 100m apart) and you would like to trigger them  when a threshold is exceeded from a Solinst level sensor.  The trigger would be communicated via messages on the telemetry NB-iot?

Probably the best way to think about it is in stages

1) figure if t…[Read more]

@khaase  interesting getting the LiSOCL2  activated.

My 2Cents is it would be good to characterize the 350mA  pulse – and isolate it from the mega1284’s  high impedance LiSOCL2.   That could mean that for the “high impedance” (for a battery)  LiSOCL2,   the current draw has to be kept below a threshold, treated as a constant current source.…[Read more]

Mostly the cables we put in are armored –  3/4″ flexible and can be joined easly – something like https://www.lowes.com/pd/HydroMaxx-3-4-in-x-50-ft-Black-Flexible-PVC-Pipe/1002884464

Also seen cables chewed by squirrels .

Hi @khaase I haven’t figured out what the source of the reset is, as the AVR1284 Arduino code discards it – very frustrating.

I have used low ESR capacitors – something like Digikey 732-9079-1-ND CAP ALUM 680UF 20% 10V THRU HOLE LOW ESR

Whenever I have longer wires, a power switch, or current measurement, with the LiIon battery, I get some…[Read more]

Maybe of interest https://www.envirodiy.org/topic/primary-powering-in-cold-settings/

@davem great topic.  I was at a SSU Eng Presentation yesterday by Enphase   a leading solar equipment provider and they use LiPo4 in their battery 3.3Kwh/10Kwh systems.  All about safety.  LiPo4 slightly less power density — but that isn’t a problem with stationary systems.  No temperature stability. Fire issues are a big deal. A recent newsp…[Read more]

Hello Dave, thanks for sharing.

I had thought of getting the device, because of the price, so interesting.

The issues I saw is that it has two sources of analog error and unquantified temperature coeffocient  for each source of error.

Every “analog” device typically has a temperature dependency, This would be the depth sensor itself, which…[Read more]

Hi James, if you have the spare jumper cable sockets you could try it and it probably will work.

The challenge is the Mayfly doesn’t have a lot of capacitive buffering and the LiIon battery performs that function.  It might be more reliable to have a battery on each Mayfly and run the solar panel to both.  Of course the boards need to be kept p…[Read more]

Wow thanks so much for sharing, and no problem with your English.  I’ve been in that situation where its difficult to debug ModularSensors/Mayfly as the software implementation using time loops is so time sensitive.

Are you planning on using a git to store the programs with an open source license? Its very nice if you do and gives some…[Read more]

@rogers1313 – its a good “engineering question”. speaking as an electrical engineer and some one that has blogged on understanding traceability,  measurement range, measurement resolution. measurement accuracy and  total error band of measurement being different aspects of the  measurement.

In short the Hydro 21 has calibrated measurements th…[Read more]