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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    5" Jumpy screen?

    Scheduled Pinned Locked Moved Help and Support
    jumpylcdscreen
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    • monstermadeofmanM
      monstermadeofman
      last edited by

      Might i suggest making this alot easier by putting it all into one module as I feel you are over complicating the entire thing.

      alt text

      http://www.banggood.com/37V-Liion-Battery-Mini-USB-To-USB-A-Power-Apply-Module-p-928948.html?p=9B1915347037201311DI

      This is used quite alot in GBZ builds. It let's you charge and play at the same time. It also has the powerboost built into the board so no need for that.

      the other option while alot more expensive is the Adafruit Powerboost 1000c

      alt text

      Just google it. So many places sell them.

      Not all those who wander are lost

      1 Reply Last reply Reply Quote 0
      • cyperghostC
        cyperghost @josephchrzempiec
        last edited by

        @monstermadeofman
        I don't want to stop your helping hand but ....

        @josephchrzempiec said in 5" Jumpy screen?:

        Hello thank you all for the reply back. It came with a rear view car camera and i tried that. Surely a clear perfect picture no jumping around. It's only in the raspberry pi it's doing this.

        monstermadeofmanM 1 Reply Last reply Reply Quote 0
        • monstermadeofmanM
          monstermadeofman @cyperghost
          last edited by

          @cyperghost

          Yeah I think the issue at this point man is how he's supplying power. Seems a bit convoluted and is probably a power issue if it's ok when just using the camera with it.

          Not all those who wander are lost

          cyperghostC 1 Reply Last reply Reply Quote 1
          • josephchrzempiecJ
            josephchrzempiec
            last edited by

            I want to try something Let me isolate the raspberry pi from the LCD and power it up on a different Power supply and see what happens.

            1 Reply Last reply Reply Quote 0
            • cyperghostC
              cyperghost @monstermadeofman
              last edited by cyperghost

              @monstermadeofman Do you think the power regulator is messing the composite signal? That could be possible.... So it should work with separated power supplies.
              But it could also be a bad composite connection or a bad config.

              josephchrzempiecJ 1 Reply Last reply Reply Quote 0
              • monstermadeofmanM
                monstermadeofman
                last edited by

                That's what I was thinking. I'm using a composite screen with with a powerboost 1000C and I'm not getting an issue. But I think the fact he's using individual parts that might not like working together or could be wired incorrectly.

                Not all those who wander are lost

                cyperghostC 1 Reply Last reply Reply Quote 0
                • josephchrzempiecJ
                  josephchrzempiec @cyperghost
                  last edited by

                  @cyperghost And there goes that problem I isolate the screen from the Raspberry pi and just Power the LCD with it's only 5v 2a Power supply and it confirms my thoughts there is Noise on the lines. The LCD comes on with no problem nice and clear and clean.

                  cyperghostC 1 Reply Last reply Reply Quote 0
                  • cyperghostC
                    cyperghost @monstermadeofman
                    last edited by cyperghost

                    @monstermadeofman
                    We will see in the next posting of @josephchrzempiec. Be prepared :)

                    EDIT: Respect you were right :)

                    1 Reply Last reply Reply Quote 0
                    • cyperghostC
                      cyperghost @josephchrzempiec
                      last edited by cyperghost

                      @josephchrzempiec
                      Nice it works :)
                      Do you use the same grounding signal for all?
                      Please then graduate @monstermadeofman

                      1 Reply Last reply Reply Quote 0
                      • josephchrzempiecJ
                        josephchrzempiec
                        last edited by

                        Someone Shake my head off my shoulders please LOL

                        Yes i still keep a common ground between both power supplies bypassing the buck boost converters. As i looked online A lot of these Buck boost converters Because there old design That they are notorious For noise on the lines. I do have a power boost 1000c from adafruit But i do not have other buck boost converter like in your I'm i will look into getting one. Meanwhile i think with a little help from filtering caps might for now Help clear up some of the Screaming noise from the lines.

                        1 Reply Last reply Reply Quote 0
                        • monstermadeofmanM
                          monstermadeofman
                          last edited by

                          Dude you don't need another power converter.

                          The Powerboost is the converter! It steps up 3.7V to 5.2V.

                          Can you take a pic of your wiring my friend? Just so we can see how you are powering everything

                          Not all those who wander are lost

                          josephchrzempiecJ 1 Reply Last reply Reply Quote 0
                          • josephchrzempiecJ
                            josephchrzempiec @monstermadeofman
                            last edited by

                            @monstermadeofman That might be a problem so much wiring you won't be able to see what is going where. There are 30 wires are more going form the game controllers to the raspberry pi and to the LCD and power it's so tangled up it's not even funny.

                            monstermadeofmanM 1 Reply Last reply Reply Quote 0
                            • monstermadeofmanM
                              monstermadeofman @josephchrzempiec
                              last edited by

                              @josephchrzempiec

                              Christ man. Are you using a power strip to supply/distribute power to everyhting?

                              Not all those who wander are lost

                              josephchrzempiecJ 1 Reply Last reply Reply Quote 0
                              • josephchrzempiecJ
                                josephchrzempiec @monstermadeofman
                                last edited by

                                @monstermadeofman LOL no man I just not got around to cleaning up the wires yes. That was the next thing to do. After getting it powered up and testing it.

                                monstermadeofmanM 1 Reply Last reply Reply Quote 0
                                • monstermadeofmanM
                                  monstermadeofman @josephchrzempiec
                                  last edited by

                                  @josephchrzempiec

                                  I would suggest a powerstrip before powering anything.

                                  They are simple enough to make or you can order one from OSH Park

                                  alt text

                                  https://oshpark.com/shared_projects/tQqjx16m

                                  I've got a simple one I made that I use for testing power purposes

                                  Not all those who wander are lost

                                  josephchrzempiecJ 2 Replies Last reply Reply Quote 0
                                  • josephchrzempiecJ
                                    josephchrzempiec @monstermadeofman
                                    last edited by

                                    @monstermadeofman That is on my next thing to do as soon as i can.

                                    1 Reply Last reply Reply Quote 0
                                    • josephchrzempiecJ
                                      josephchrzempiec @monstermadeofman
                                      last edited by josephchrzempiec

                                      @monstermadeofman There is a En and Vs pin on the 1000c Power Boost what is that for?

                                      the other Question is would the power boost 1000c would be able to charge my 5000mah batteries?

                                      monstermadeofmanM 1 Reply Last reply Reply Quote 0
                                      • monstermadeofmanM
                                        monstermadeofman @josephchrzempiec
                                        last edited by

                                        @josephchrzempiec

                                        En is you Enable. That's for a powerswtich.

                                        I Beleive the VS is also for this but I onlu use VS and Ground. Check Adafruits website for the wiring I beileve it's on there

                                        Not all those who wander are lost

                                        josephchrzempiecJ 1 Reply Last reply Reply Quote 0
                                        • josephchrzempiecJ
                                          josephchrzempiec @monstermadeofman
                                          last edited by

                                          This post is deleted!
                                          1 Reply Last reply Reply Quote 0
                                          • josephchrzempiecJ
                                            josephchrzempiec
                                            last edited by

                                            The other Question is would the power boost 1000c would be able to charge my 5000mah batteries?

                                            monstermadeofmanM 1 Reply Last reply Reply Quote 0
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