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Small monitor options for R-Pi

Former Member

So, I know many people will want to hook the R-Pi up to a 50-inch HDTV, but some of us will want to keep it small (such as for a CarPC). I am not thinking about touchscreen capability, simply small LCD displays. So, there are $1000 5" to 8" LCDs meant for digital photography, but that is nuts. So, I found that small portable LCD TVs should be the way to go. The cheap Coby and Axion 7" LCD TVs have RCA/composite video input jack, and luckily the R-Pi also has an RCA/composite video output jack!  They are about $50 to $60.

 

Coby

http://www.bing.com/shopping/coby-tf-tv791-7-lcd-tv/specs

 

Axion

http://www.bing.com/shopping/axion-axn-8701-7-lcd-tv/specs

Parents

  • If you want to go smaller than that AdaFruit has some options:

    http://www.adafruit.com/products/913

    http://www.adafruit.com/products/912

    http://www.adafruit.com/products/911

     

    I tested the Rpi with a 7" TFT LCD TV/Monitor, I didn't find the way to tweak the NTSC signal, I'd agree that the TV/Monitor is not a great thing, but the text from the Rpi is practically unreadable.

     

    A Picture is worth a thousand words ...

    image

     

    Is two, two thousand ? Next picture is from a 21" HD Monitor via the composite video input

    image

    I've to admit that I'm not using a high quality video cable, and there is some noise on the signal, there is flickering on the colors and text looks like if the pixel clock had a lot of jitter.

     

    OK, lets make it three thousand then ... after startx

    image

    Not bad, but with the noise moving the pixels and flickering on the colors, you may be able to survive in text mode but for graphic mode I think the best way is to go with the HDMI interface.

     

    Signal quality will probably be better with a better cable (I'm using a standard 3xRCA AV cable).

     

    -J

Reply

  • If you want to go smaller than that AdaFruit has some options:

    http://www.adafruit.com/products/913

    http://www.adafruit.com/products/912

    http://www.adafruit.com/products/911

     

    I tested the Rpi with a 7" TFT LCD TV/Monitor, I didn't find the way to tweak the NTSC signal, I'd agree that the TV/Monitor is not a great thing, but the text from the Rpi is practically unreadable.

     

    A Picture is worth a thousand words ...

    image

     

    Is two, two thousand ? Next picture is from a 21" HD Monitor via the composite video input

    image

    I've to admit that I'm not using a high quality video cable, and there is some noise on the signal, there is flickering on the colors and text looks like if the pixel clock had a lot of jitter.

     

    OK, lets make it three thousand then ... after startx

    image

    Not bad, but with the noise moving the pixels and flickering on the colors, you may be able to survive in text mode but for graphic mode I think the best way is to go with the HDMI interface.

     

    Signal quality will probably be better with a better cable (I'm using a standard 3xRCA AV cable).

     

    -J

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