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    Lopy4 deep sleep problem

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    lopy4loradeepsleep
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    • P Offline
      pierremarsot @iwahdan
      last edited by

      @iwahdan Sorry but i have an consumption higher (see picture)
      Maybe i didn't do the right thing ...

      0_1532539060576_IMG_1429-1.JPG

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      • I Offline
        iwahdan @pierremarsot
        last edited by

        Hi @pierremarsot, I cannot totally get from the picture how you setup the circuit , if you could share the circuit diagram along with pin connections I could try to test with your setup.

        Wahdan

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        • P Offline
          pierremarsot @iwahdan
          last edited by

          Tanks @iwahdan 0_1532541974275_IMG_1430.JPG
          Can you see clearly on this picture ?

          Basic circuit. Powered by a power supply (12Vdc / 3A) on 3.3V PIN
          I tried on 5V PIN, i got a consumption around 65mA

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          • I Offline
            iwahdan @pierremarsot
            last edited by iwahdan

            @pierremarsot , This is NOT how you power on any of pycom Devices.

            Maximum voltage you can use is 5.5v and you Connect to Vin not 3.3v pin! , the 3.3v pin is actually used for supplying 3.3v output.

            please use this pinout diagram as a guideline

            Wahdan

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            • P Offline
              pierremarsot @iwahdan
              last edited by pierremarsot

              @iwahdan
              Ok, thanks for this issue, sorry ...

              I just tried with an 5.5V power supply (checked with multimeter) and i got a consumption around 63mA in deep sleep.
              Same circuit, just changed power supply input and connected with 5.5v PIN.

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              • I Offline
                iwahdan @pierremarsot
                last edited by

                @pierremarsot, well it might very well be that your Lopy was damaged in some way or something got shortened , do you have another device that you can try?

                Wahdan

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                • S Offline
                  Sympatron @pierremarsot
                  last edited by

                  @pierremarsot said in Lopy4 deep sleep problem:

                  Basic circuit. Powered by a power supply (12Vdc / 3A) on 3.3V PIN

                  What do you mean by that? Did you connect 12V to the 3.3V Pin? This would certainly damage the device...

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                  • P Offline
                    pierremarsot @Sympatron
                    last edited by

                    Hi @sympatron
                    Yes, I connected the 12V to the 3.3V and 5V PINs ...
                    I thought my power supply transformed the 12V input in 5V output but after some tests, it didn't ...

                    I used this one : https://www.amazon.fr/SODIAL-Planche-Compatible-puissance-bricolage/dp/B015NUN4QI/ref=asc_df_B015NUN4QI/?tag=googshopfr-21&linkCode=df0&hvadid=106796343001&hvpos=1o3&hvnetw=g&hvrand=2025127917332645665&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9055144&hvtargid=pla-208287294001&psc=1

                    robert-hhR 1 Reply Last reply Reply Quote 0
                    • robert-hhR Offline
                      robert-hh @pierremarsot
                      last edited by

                      @pierremarsot that module should step down 12V to 5V or 3.3V. If your LoPy4 still works, then you probably used it fine. Only the 3.3V pin of the xxPy devies is an Input. Always power them throuh Vin.

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                      • J Offline
                        jcaron @robert-hh
                        last edited by

                        @robert-hh I think you mean the 3.3V pin is an output, and one should never power the board through it?

                        robert-hhR 1 Reply Last reply Reply Quote 0
                        • robert-hhR Offline
                          robert-hh @jcaron
                          last edited by

                          @jcaron Of course!

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