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Forum how do you connect a TFT LCD (20 pins HDMI to 40 pins TTL)
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how do you connect a TFT LCD (20 pins HDMI to 40 pins TTL)

digimbyte
digimbyte over 8 years ago

I've been around the tech community for a while, I've watched tutorials and enjoy the ben heck show and I have acquired several parts over the last few years, and I've decided to try and put them together.

 

I have;
BeagleBones Black

Thing-printer's Replicape Replicape rev B - Thing-Printer

ER-TFT050-3 5" display with driver board (RTD2660) http://www.buydisplay.com/default/5-inch-lcd-screen-tft-module-800x480-vga-video-av-driver-board

 

the replicape does consume almost all the pins from the BBB - but what I'm trying to do is connect the LCD IO pins to the TFT screen

the only problem is, the connectors for the driver board don't really encompass IO inputs. that being VGA and AV.

I was thinking I might possibly solder directly onto the RTD2660 or maybe I'm over complicating it.

I have a few other LCD screens procured from junk tablets, second-hand cam's etc if this display isn't ideal

 

 

things like this work fine if you buy kitbashing parts but this has me stumped as how to connect this TFT display with the touch screen to the BBB

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  • digimbyte
    0 digimbyte over 8 years ago

    Looking into it deeper I came across where some girl from adafruit connected a TFT display directly to a raspberry pi with 20 pins using a 40 pin breakout board
    I've have bought one to help with the possibility of it working

     

    TFT LCD
    unknown.png
    BBB/Replicape
    unknown.png

     

    from my understanding, this is more typical analog connection while the BBB uses HDMI digital pins?
    any advice is greatly welcome because this information isn't readily available without making some kind of educated guess.

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  • RParkerE
    0 RParkerE over 8 years ago

    It seems that you can extract a VGA signal from the LCD headers. Here is an article on how it may be done. This is not a direct fix, as it requires some hardware building, but I believe it will be a workaround.

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