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Dave

  • Hi everyone,

    I thought that I would start a new thread in case anyone is interested in using their Mayfly loggers in locations where there is not reliable cell service or in areas of dense vegetation.

    This past summer we (Dartmouth, Plymouth State University) have been working with the US Forest Service to install a sensor network to monitor…[Read more]

  • Hi everyone,

    Just an update here. Due to the issues with the CS-215, we ultimately decided to go with the Meter Group’s ATMOS-41. It worked seamlessly with the Mayfly and our script and we had no issues with addresses or voltages. Seeing that it was relatively similar in cost, it was an easy decision. This evades the answer to the question, so…[Read more]

  • Dave posted an update in the group Group logo of Data Logger DevelopersData Logger Developers 2 months, 4 weeks ago

    Just an update on things from Dartmouth –

    On friday, we installed roughly 60 Acclima TDR sensors to monitor soil and dead wood moisture over time. We utilized 3 Mayflys in boxes, powered by lead-acid rechargable batteries and an RTC setup to do 30-minute collections. Installing this many sensors required us to utilize DIN rails instead of Grove…[Read more]

    • thanks for sharing. Interesting to see the pic. How are you charging the battery.
      It looks like you must have something like the TDR-315 and leave it on all the time.

  • Sara,

    Just to loop back – we were in touch with Campbell and their suggestion was also along the lines of the 3.5V voltage requirement. In the meantime, we picked up a Meter Group (formerly Decagon) ATMOS-14 sensor which collects temp/RH/VP and it worked perfectly. Since we only had to install one, we just went with that.

    We’ll try to figure…[Read more]

  • Hi Sara,

    We spent several hours today trying to work with the CS-215. We did update and use the most recent library (1.3.1) but were still having issues with the two examples. For the address change example, all of the addresses were vacant, even though we had defined the sensor having an address previously using a CR1000 (Campbell) logger. The…[Read more]

  • Hi Sara,

    Thank you for getting back to me. I’ll check the version of the library we have and will capture the serial output. We won’t be having a lab meeting until Tuesday so I will send it right after that. I noticed that there were updates last month so perhaps that will sort things out. In the meantime, thank you for helping!

    Dave

  • Hi everyone,

    We have made some good strides getting a Mayfly logger network started here in New Hampshire thanks to all the information here on Enviro-DIYs forums. We can now collect measurements from multiple SDI-12 devices, store to an SD card, connected to a battery and RTC for sleep when not collecting.

    We’ve been thinking about adding a…[Read more]

  • Iris,

    I’d be interested to hear what you find. Here in NH we have interest in sap flow measurements for projects in conjunction with the Proctor Maple Syrup Institute at UVM. Installing Mayfly-based networks could be really interesting to them.

    Dave

  • Dave replied to the topic HCSR04 & Sw5 in the forum Mayfly Data Logger 6 months ago

    The Grove connectors are currently a bit of a pain to procure. They are available on SeeedStudio and Amazon but my sense is that everything is back ordered. I’ve had to have them shipped from Hong Kong over the past few months.

  • Dave replied to the topic Low power project in the forum Mayfly Data Logger 6 months ago

    I wanted to resurrect this particular thread because we have been running into the same issue that Chan had. However, I note that there is a new variant of the SDI12 library as of roughly 2 weeks ago (EnviroDIY_SDI12_PCINT3) and I am pretty sure that it is an updated version of the SDI12_mod that Shannon sent in response a few years back in this…[Read more]

  • Dave and Profile picture of Shannon HicksShannon Hicks are now friends 7 months ago

  • Hi Beth,

    Yes of course! Just checked – we have 0.5b. Don’t know how I overlooked that!

    Another quick question that you may/may not know – if you are connecting an external 12v power supply to the mayfly, what type of jack is needed to connect the power source to the Mayfly? Is that just a male JST jack? (pictured here: jack)

    Thanks!!

  • Dear EnviroDIY,

    I’m working on setting up a sensor network with a variety of soil moisture and temp/rh sensors. We’re using a CS-215 to handle temp/RH and it requires 12VDC. The trick is that we obtained our Mayfly via a colleague at another institution and aren’t sure if the board is 0.5 or 0.4. Obviously if it is 0.5 it can handle the 12V…[Read more]

  • Dave and Profile picture of MeredithMeredith are now friends 9 months, 1 week ago

  • neilh and Profile picture of DaveDave are now friends 1 year, 1 month ago

  • Dave posted a new activity comment 1 year, 1 month ago

    Hi there Neil,

    Well right now we’re quite focused on a handful of important characteristics of forest ecosystems, predominantly air T, soil T, plant available moisture, and volumetric soil moisture. The general paradigm shift we see now is that single sensor nodes do not provide the spatial or temporal resolution for us to understand microclimate…[Read more]

    • For a leafy canopy 2.4Ghz gets absorbed by the water. 900Mhz gives a much range in a leafy canopy for lower power. The WiFi standard is evolving to include a “low data rate” in sub 1GHz – but no time lines for which silicon will have it first.
      I’d be interested in what you find with specific sensors – it can be painful – however calibration and…[Read more]

  • Dave‘s profile was updated 1 year, 1 month ago

  • Dave changed their profile picture 1 year, 1 month ago

  • Dave posted a new activity comment 1 year, 1 month ago

    I’m working on constructing wireless sensor networks with the Forest Service and a handful of Research Universities across New England for use in forested ecosystems (soil, temp, humidity, irradiance, etc). Although I’m an ecosystem scientist and not an electrical engineer, there is a growing need to get portable low-cost sensors out for…[Read more]

    • Hi Dave
      Great to hear about it – this is a board to bring together the ecosystem sciences and software/electronic to make it happen.
      Be great to hear how you are going about defining and refining the sensor networks.
      I’ve been designing remote instream water sensors. The challenges has been low cost environmental protection, solar powering, field…[Read more]

      • Hi there Neil,

        Well right now we’re quite focused on a handful of important characteristics of forest ecosystems, predominantly air T, soil T, plant available moisture, and volumetric soil moisture. The general paradigm shift we see now is that single sensor nodes do not provide the spatial or temporal resolution for us to understand microclimate…[Read more]

        • For a leafy canopy 2.4Ghz gets absorbed by the water. 900Mhz gives a much range in a leafy canopy for lower power. The WiFi standard is evolving to include a “low data rate” in sub 1GHz – but no time lines for which silicon will have it first.
          I’d be interested in what you find with specific sensors – it can be painful – however calibration and…[Read more]

    • I’m working on constructing wireless sensor networks with the Forest Service and a handful of Research Universities across New England for use in forested ecosystems (soil, temp, humidity, irradiance, etc). Although I’m an ecosystem scientist and not an electrical engineer, there is a growing need to get portable low-cost sensors out for…[Read more]

      • Hi Dave
        Great to hear about it – this is a board to bring together the ecosystem sciences and software/electronic to make it happen.
        Be great to hear how you are going about defining and refining the sensor networks.
        I’ve been designing remote instream water sensors. The challenges has been low cost environmental protection, solar powering, field…[Read more]

        • Hi there Neil,

          Well right now we’re quite focused on a handful of important characteristics of forest ecosystems, predominantly air T, soil T, plant available moisture, and volumetric soil moisture. The general paradigm shift we see now is that single sensor nodes do not provide the spatial or temporal resolution for us to understand microclimate…[Read more]

          • For a leafy canopy 2.4Ghz gets absorbed by the water. 900Mhz gives a much range in a leafy canopy for lower power. The WiFi standard is evolving to include a “low data rate” in sub 1GHz – but no time lines for which silicon will have it first.
            I’d be interested in what you find with specific sensors – it can be painful – however calibration and…[Read more]

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