Forum Activity

Latest Activity

  • I plotted the temperature and VWC on the same chart and you can see that they are very much linked together. Can you answer whether the sensor is completely buried in the soil, and if so how deep is it? If only the fiberglass tines are inserted into the soil but the rest of the sensor body is above ground and subjected to direct sunlight or…[Read more]

  • Hello Sara,

    Thanks for the reply, attached is a copy of the actual raw data and the sensor and arduino are actually places in a field(so not a controlled environment). I was expecting the VWC to reduce with time and not the sinusoidal behavior, Equally the Ea will give similar curve because its used to calculate the VWC using the Topps equation.…[Read more]

  • Please, like Shannon suggested, copy in your actual code using the “Add Code Snippet” button and actually attach your raw data, not a picture of it. Also, like Shannon said, please plot your EA and temperature to see how they look. And, again, like Shannon said, explain:

    How were you testing the sensor? Was is installed outside or in a…

    [Read more]

  • Please, like Shannon suggested, copy in your actual code using the “Add Code Snippet” button and actually attach your raw data, not a picture of it. Also, like Shannon said, please plot your EA and temperature to see how they look. And, again, like Shannon said, explain:

    How were you testing the sensor? Was is installed outside or in a…

    [Read more]

  • Hello,

    I just checked again and yes i am plotting the VWC. As for the collection of the data i am actually using an SD card shield on the arduino to store the data. As you can see from the image there are two curves each one for the different sensors placed at the same location. After getting this results i decided to take out the SD card shield…[Read more]

  • The graph looks more like a plot of temperature rather than VWC. Are you sure you’re plotting the right column of data? What are you using to actually record the data? Your sketch doesn’t output the data to a file or even print it in a easily-captured string out to the serial port, so I’m wondering how you collected multiple days of data. Plot…[Read more]

  • Hello,
    Thanks for the quick response.Bellow is the sketch running on the arduino Uno R3. The devices where actually tested on the field(not in a controlled environment).The results shown on the plot is VMC collected every minute from the sensors. Actually the VWC is expected to reduce with time, these results are collected over a period of 3…[Read more]

  • I got and accepted your pull request. The fix is in the library now.

  • It would be helpful for you to attach a jpg of png image of your graph instead of a Powerpoint slide. You also can’t attach the raw .ino file to forum posts, but you can cut and paste it using the “code” tags in the post editor tools.

    And on your graph, can you please label both the x and y-axis? I don’t know what parameter you’re graphing…[Read more]

  • Hello,
    so i am using the SDI-12 library at https://github.com/EnviroDIY/Arduino-SDI-12.git to collect Ea and VWC data from the decagon 5TM sensors attached to an arduino Uno R3. Using the attached sketch, unfortunately the results obtained are inconsistent after several days of data collections. as shown in the plot of the different data points.…[Read more]

  • Load More