Hi. I'm working on a project where I have connected at Pi B+ to at car rear view LCD I had around. I want to display some logging information on a webpage, running in fullscreen and refreshing automatically. I have that part working, but what I could use a bit of help is things that will improve the contrast and readability of display, to put as much text on there as possible and still be able to read it from the couch.
The Pi is connected through the composite out, and resolution is set to 640x480. I have turned the colour saturation down on the display, which reduced colour bleeding a lot. Also, I've tried different tried different fonts, sans-serif seems to be the most readable. Any other tips and tricks I can try out?
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DougieLawson
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Re: High contrast on PAL LCD?
Composite is ugly and there is exactly ZERO you can do to improve it.
The only time I've had useful output from composite was when I got my Raspberry running as a Teletext encoder and used the Teletext decoder in my TV to view the output.
https://blog.adafruit.com/2015/02/20/te ... pberry_pi/
https://github.com/ali1234/raspi-teletext
The only time I've had useful output from composite was when I got my Raspberry running as a Teletext encoder and used the Teletext decoder in my TV to view the output.
https://blog.adafruit.com/2015/02/20/te ... pberry_pi/
https://github.com/ali1234/raspi-teletext
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Any DMs sent on Twitter will be answered next month.
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Re: High contrast on PAL LCD?
That's not a lot 
One thing I found was
sdtv_disable_colourburst=1
which actually helps a lot. Now I'm able to get 14 lines of text with around 40 characters, readable from a few meters away, which is not perfect, but definitely useful.
One thing I found was
sdtv_disable_colourburst=1
which actually helps a lot. Now I'm able to get 14 lines of text with around 40 characters, readable from a few meters away, which is not perfect, but definitely useful.