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24-bit color on 4.3" TFT using just 16 pins - Page 2 — Parallax Forums

24-bit color on 4.3" TFT using just 16 pins

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Comments

  • @Rayman said:
    240 looks OK, although blanked likes on top and bottom have junk now.
    120 doesn't work, images is all red, strange...

    Hmm. Some experimentation might be in order, can't guarantee it'll work out.

  • RaymanRayman Posts: 12,818
    edited 2022-09-04 20:22

    I have another version that is 320x240
    In 3.5”. Maybe that’s a better fit…

  • evanhevanh Posts: 13,574
    edited 2022-09-04 22:13

    There's no minimum frequency for the dot-clock, surprisingly. That suggests you can just wind that down to reduce the blanking and bring the scan rates into the 15kHz/60Hz range.

  • RaymanRayman Posts: 12,818
    edited 2022-09-05 23:31

    Got this non-touch, low cost, version of the 4.3" display working.
    Took longer than I expected due to some blunders in soldering and code, but looks good now.

    Images is upside down, compared with the resistive touch version.
    Maybe I should have been more careful there, but I think it's OK.

    This one seems to work without the need for the DE signal, can just go by VSYNC/HSYNC.

    640 x 480 - 56K
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