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    A New Chapter for MagicMirror: The Community Takes the Lead
    Read the statement by Michael Teeuw here.

    Powering my mirror?

    Scheduled Pinned Locked Moved Hardware
    45 Posts 6 Posters 38.1k Views 4 Watching
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    • T Offline
      The Bean
      last edited by

      My point is that all the power supply’s under 80W only have one set of output wires.

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      • M Offline
        MadScientist
        last edited by

        Just use luster terminals.

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        • T Offline
          The Bean @MadScientist
          last edited by

          @MadScientist sorry for so many questions. But won’t I need to solder them in a “T”? Or get a T splice?

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          • M Offline
            MadScientist
            last edited by

            Don’t be afraid to ask…

            Pic says more than a thousand words…
            alt text

            You can solder the wires together but that’s not really needed.

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            • T Offline
              The Bean @MadScientist
              last edited by

              @MadScientist ok awesome! That really did help I wasn’t thinking of doubling them up in the terminal.

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              • T Offline
                The Bean @The Bean
                last edited by

                https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F191903753580
                This converter isn’t adjustable and it’s only 5.0 v would this work?

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                • M Offline
                  MadScientist
                  last edited by

                  https://www.ebay.com/itm/1PCS-DC-DC-LM2596-power-Supply-Buck-Converter-step-down-module-NEW-CA/142147326064?hash=item2118a41070:g:L1kAAOSwvzRXzOBg
                  or
                  https://www.ebay.com/itm/DC-DC-Buck-Step-down-Regulator-Converter-4-2-23v-to-3V-3-3V-5V-9V-12V-24V-Module/112472493337?hash=item1a2fe20d19:g:dCsAAOSwdd9aVjD6
                  should do. They are adjustable via a potentiometer. Iam using the latter one for a Pi Zero but the 3A are enough to power a Pi3 easily. You should check aliexpress.com since most of the low priced parts already come from China. They will be even cheaper and are the very same product.

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                  • T Offline
                    The Bean
                    last edited by

                    How do these look?
                    http://s.aliexpress.com/67rmau6V?
                    http://s.aliexpress.com/vuaEjyAR?

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                    • M Offline
                      MadScientist
                      last edited by

                      Yeah, that should do.

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                      • T Offline
                        The Bean
                        last edited by The Bean

                        before i buy a power supply i wanted to ask if the one i had for it would work, if i spliced the adapter into it?

                        https://www.ebay.com/itm/112168199465

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                        • M Offline
                          MadScientist
                          last edited by

                          Sure it works. I just proposed the other one because it’s very compact and I thought that was important. Use the once you already have to save costs as long as it suits you. It’s powerful enough if those values are correct.

                          Especially those black power bricks can be of very bad quality. Run your mirror setup for a few hours and check that the power supply isn’t getting too hot.

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                          • T Offline
                            The Bean
                            last edited by

                            My problem with it was that I didn’t want to have the brick of it out side the case. Or 3 foot of wire looped inside but I’ll have to cut it to add the step down anyway. So I may as well try it that way first. But I also didn’t know if it was big enough for both To run off of.

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                            • T Offline
                              The Bean
                              last edited by

                              i ran into this problem awhile back but got put on the backburner.

                              0_1530480192674_Diagram- screen 2.png

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                              • M Offline
                                maxbachmann
                                last edited by

                                @The-Bean Whats the buck down converter? I guess the pi is just a to big load for it

                                Never expect those china buck down converters to achieve more than 50% of what they say they will do (especially without additional cooler)

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                                • M Offline
                                  maxbachmann
                                  last edited by

                                  @The-Bean you might want to try with a additional cooler on the converter since the pi is not constantly pulling 2A, so it might work

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                                  • T Offline
                                    The Bean
                                    last edited by

                                    http://a.co/4qRQUQJ

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                                    • M Offline
                                      maxbachmann
                                      last edited by

                                      @The-Bean When it gets really hot I would try with a heatsink
                                      and what happens when you connect it and then turn up the voltage until you reach 5V?

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                                      • T Offline
                                        The Bean
                                        last edited by

                                        the converter its self doesnt really get hot.(that i have noticed) it just the wire to the pi. and once it drops, it doesnt adjust anymore.

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                                        • M Offline
                                          maxbachmann
                                          last edited by

                                          hm strange I mean I don’t know the cable size you use, but 5V 2A is pretty much nothing for any cable. Should not really get hot for sure

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                                          • T Offline
                                            The Bean
                                            last edited by

                                            thats what i thought… i will continue to investigate and post back if i find anything.

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