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suketunaik

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  • 2018-04-20 at 11:42 AM in reply to: Charging 6600 mAh Li-ion battery with 3.5W solar panel #12252
    suketunaik
    Participant

      That was very helpful and informative reply. I did see that the yellow LED doesn’t quite go out but faints (equivalent of ‘off’) after charging
      the battery using microUSB cable. It took almost 12 hours which is what I originally figured. For anyone who comes across this thread in future, a word of advice: choose your battery wisely. You may not need a very big battery.

      2018-04-18 at 6:13 PM in reply to: Charging 6600 mAh Li-ion battery with 3.5W solar panel #12245
      suketunaik
      Participant

        And on the related note,
        am I correct in assuming that solar panel will charge the battery even if I leave Mayfly in off mode?
        In other words, I don’t need to turn on the Mayfly and then wait for the battery to be charged over the entire day. Is that correct?

        2017-07-11 at 8:59 AM in reply to: Low Cost Ambient Water Quality Sensors #2276
        suketunaik
        Participant

          Shannon, Thanks for your reply.
          I am interested in measuring pH, Temp., DO, and Conductivity. What do you recommend?
          Also, I just noticed on your blog that the latest version of Mayfly accepts 12 V power.
          This is perfect since a lot of medium/higher grade sensor sondes work off of 12 V. The question
          I have is whether Mayfly will enable sleep mode to save battery like it did with 6 V max input?
          In other words, can I power the board with 12 V solar panel and regulate the battery as before?
          Also, should the 12 V input be from a LiPo Battery? I hope my questions make sense.
          Thanks.

          2017-06-28 at 9:07 AM in reply to: Low Cost Ambient Water Quality Sensors #2263
          suketunaik
          Participant

            Hello Shannon,
            I am responding to your post from a year ago. I have been working on an interface that can take 12 V from a solar panel, run the 4-20mA sensors, convert the 12 V to 3.7 V to run Mayfly and sensor interface circuits. I have located one vendor (Global Water) that sells 4-20mA sensors at a low price but I would like to go through more options.
            What do you recommend?
            Also, What do you recommend for the “research-grade high-quality sensors”? Do you prefer a specific vendor?
            Thank you very much.

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