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    spi screen and zero combo Brainstorming!!!

    Scheduled Pinned Locked Moved Projects and Themes
    zerotftpcb
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    • mooseprM
      moosepr @obsidianspider
      last edited by

      @obsidianspider i was thinking something like this

      https://oshpark.com/projects/80gXsKOE

      i need to find out how to add bits properly

      want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

      obsidianspiderO 1 Reply Last reply Reply Quote 0
      • obsidianspiderO
        obsidianspider @moosepr
        last edited by

        @moosepr Perfect. That way you can snap off any mounting points you don't need, and they'll be on all four sides as options. Do those have holes for M2.5 (RPi standard) bolts? M3 would also be OK.

        📷 @obsidianspider

        mooseprM 2 Replies Last reply Reply Quote 0
        • mooseprM
          moosepr @obsidianspider
          last edited by

          @obsidianspider they have no holes at all yet :P but i think M2.5 is probably a good stab, it keeps everything standard with the zero.

          the only problem i have spotted, ordering the minimum of 3 boards from OSHpark has now jumped from $28 to $38!!! all that wasted space costs ALOT!!

          want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

          1 Reply Last reply Reply Quote 0
          • mooseprM
            moosepr @obsidianspider
            last edited by

            @obsidianspider now $40 once i make the tabs big enough for holes!!!

            https://oshpark.com/projects/eV0wV0Kg

            want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

            obsidianspiderO 1 Reply Last reply Reply Quote 0
            • obsidianspiderO
              obsidianspider @moosepr
              last edited by

              @moosepr Yikes. Maybe some hot glue and tape are a better option ;)

              📷 @obsidianspider

              mooseprM 1 Reply Last reply Reply Quote 0
              • mooseprM
                moosepr @obsidianspider
                last edited by

                @obsidianspider yeah, although ordering larger quantities will lower the price. Drops it from $13.33 per board to about $8 per board.

                You can find raw screens for about $4 (http://www.ebay.co.uk/itm/371348179488) so that makes it about $12 for the whole thing. Makes it about twice the price of an ebay special with PCB (http://www.ebay.co.uk/itm/271969120935) but more use.

                Maybe i could kickstarter it and get a few thousand made to lower the cost!!

                want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                1 Reply Last reply Reply Quote 0
                • mooseprM
                  moosepr
                  last edited by

                  Righty, i think we are about there with the board.

                  https://oshpark.com/projects/tSdupLd4

                  Just a spot over $40 for a 3 board trial, so i will keep checking, and i am waiting for some trial boards that should be landing by the weekend, these will let me test soldering the pi direct to the pcb onto SMD pads, and be a final test that you can just wire the screen straight to the pi

                  want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                  1 Reply Last reply Reply Quote 1
                  • mooseprM
                    moosepr
                    last edited by

                    Since when did OSHpark swap the free stickers for free jelly beans? I need to order more often!

                    Just need the wait for a few more bits, then I will have news....... If it works.......

                    want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                    1 Reply Last reply Reply Quote 1
                    • obsidianspiderO
                      obsidianspider
                      last edited by

                      I got my jellybeans with the $3 I spent when I ordered those power breakouts linked on sudomod. You must have gotten premium jelly beans for $40. ;)

                      📷 @obsidianspider

                      mooseprM 1 Reply Last reply Reply Quote 0
                      • mooseprM
                        moosepr @obsidianspider
                        last edited by

                        @obsidianspider this is a smaller test project, only $28. It's scary how that price soon shoots up!

                        want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                        1 Reply Last reply Reply Quote 1
                        • mooseprM
                          moosepr
                          last edited by

                          i think i have finalised the board now (i think) just need to find somewhere that can do the boards for less than $40

                          the other links probably dont work anymore, but this one will

                          https://oshpark.com/shared_projects/JMQdar5z

                          want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                          1 Reply Last reply Reply Quote 0
                          • mooseprM
                            moosepr
                            last edited by moosepr

                            China is a good source of boards once you find reasonable shipping (cost/time)

                            And when they arrive it's always good

                            boards

                            want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                            1 Reply Last reply Reply Quote 1
                            • mooseprM
                              moosepr
                              last edited by

                              its alive!!!

                              pico :o

                              some more shots here

                              http://imgur.com/a/stP5O

                              want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                              1 Reply Last reply Reply Quote 1
                              • obsidianspiderO
                                obsidianspider
                                last edited by

                                That's really cool. How did you manage to solder the Zero's GPIO to the PCB?

                                📷 @obsidianspider

                                mooseprM 1 Reply Last reply Reply Quote 0
                                • mooseprM
                                  moosepr @obsidianspider
                                  last edited by

                                  @obsidianspider well the board has square smd pads which match up with the 40 pins of the zero

                                  first step is to tin all the smd pads with a thin layer of solder. gave it a quick coat with a cheepo flux pen from an old solar project, added a spot of kapton tape to make sure the vias dont touch the pi

                                  then i clamped the Pi to the PiCB with some m2.5 bolts to hold it steady, pin by pin, hit it with the soldering iron, and push the solder in until the hole is filled, holding the iron on for just a few seconds to make sure the heat has gone though to the pad so everything is joined. repeat 39 more times!!!

                                  the screen is the same. tin the pads, scrible on the solder pen, place the screen with some tape to keep it all in place, then touch each pin for a few seconds to melt the solder :)

                                  want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                                  obsidianspiderO 1 Reply Last reply Reply Quote 0
                                  • obsidianspiderO
                                    obsidianspider @moosepr
                                    last edited by

                                    @moosepr So how long until you make a board for a Compute Module 3? ;)

                                    📷 @obsidianspider

                                    mooseprM 1 Reply Last reply Reply Quote 0
                                    • mooseprM
                                      moosepr @obsidianspider
                                      last edited by

                                      @obsidianspider hahaha in not sure on that one. They are a shade more complex! Would be nice though

                                      want to get a tft into your project, look no further than here https://retropie.org.uk/forum/topic/7464/ili9341-tft-screen-guide

                                      1 Reply Last reply Reply Quote 1
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