SGFulton

Hi Veronica,

I’d suggest looking at the Atlas Scientific sensors…they have one for measuring electrical conductivity across a range of salinities: https://www.atlas-scientific.com/conductivity.html. We’ve been using them with fairly good success for the last several years. They do foul rather quickly if there is iron in your system, and we’ve…[Read more]

Update: Got the proof-of-life (POL) code on the Mega to work using hardware serial on the Mega (Serial2) to communicate to the Pro Mini POL software serial (digital pins 2/3 RX/TX).

Thanks for all your help!

Stephanie

My new compile errors (verbose) are provided below; as you can see they’re similar to what I was getting before I downloaded the new SDI-12 library.

My apologies for asking very rudimentary questions. While I’ve been using Arduinos now for a couple of years, I am still very much a novice at C++, much less how libraries work, etc.. I’m in the…[Read more]

I tried updating the SDI-12 library but am getting similar errors. I’m still looking in to this, but am wondering whether I can use hardware serial ports on the Mega to communicate with software serial ports on the Mini?

Thanks for the oh-so-rapid responses.

Stephanie

Hmmm, now I don’t see where I saw the 2.5W reference. Perhaps I was mixing it up with the Sodaq Mbili. That’s good to know. At least one of the locations I’m intending to sample in the eastern KY coalfields, and possibly others at a different site here in GA, are very forested. I’ll have to try to run the solar panel out to a sunnier spot to…[Read more]

Hi, I note that the specs for the Mayfly state they only support a 2.5W solar panel. Here I see that you’re able to connect a 3.2W panel. How about a 6W panel (e.g., https://www.adafruit.com/products/1525) or 9W panel (https://www.adafruit.com/products/2747) or up to a 20-100W? We’re running Arduino Megas in the field hooked up to 12V marine…[Read more]

Dave, again, sounds interesting, but not sure LoRa would work for us. We’re monitoring water chemistry at a remote mine site in eastern KY and want to push the data out to the internet. LoRa sounds more appropriate for IoT in urban settings. From what I’m gathering, cellular seems like our best bet, and it’s going to have to a carrier that’s…[Read more]

Yes, Neil, the FONA library is wonderful…we’re not really inteested in developing all that code (or figuring out each protocol in great detail) for each and every sensor/piece of hardware we’re using, so having a library is key.

You asked which Arduino platform we’re using…it’s the Mega. We may also use a Raspberry Pi as the data manager for…[Read more]

Dave, thanks for this. It is interesting. Do you know more about it? Do you need a cellular carrier/SIM card? I’m curious how they’re transmitting the data, i.e., on whose network. It’s not clear from their web site, and I can’t find anything in their specifications (or I’m missing it, as it’s still hard to me to understand all these…[Read more]

Thanks for all the great info, Neil, and sorry I haven’t been responding sooner. Right now we’re focused on getting the Adafruit FONA shield to work. It’s 2G but there are libraries, etc. which makes it much simpler for us to work with since we’re not engineers. We’re trying to keep it simple. This is my dissertation research and the WSN is…[Read more]

Neil,

I’m always open to collaboration…I very much like the website you sent me and want to develop something very similar to stream live data. I’d be interested in the platform you’re using to push and store data. This is all very new to me and my learning curve is quite steep (originally a forest ecologist and remote sensing analyst back…[Read more]