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RIoTboard
Forum A newcomer asks about Riotboard HDMI...
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  • Replies 51 replies
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  • hdmi
  • riotboard
  • tablet
Related

A newcomer asks about Riotboard HDMI...

mubase
mubase over 11 years ago

Hi all. My name is Steve. I am from London. I am a newbie to the Forum. image

I found out yesterday about the Riotboard through an email from Farnell. I was so turned on I bought one today. I am not an experienced Android programmer but have experience with Processing for Android, Arduino, AVR ATMEGA and XMEGA. I haven't got my board yet but thought I'd ask about HDMI.

I have a couple of Android tablets with HDMI sockets.

One is a PIPO M9 and the other a CnM 9" tablet.

Is it possible to connect the Riotboard to a tablet screen using the HDMI sockets?

Or does it have to be a monitor?

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Top Replies

  • mubase
    mubase over 11 years ago in reply to Former Member +1
    Hi selsinork. Hmmm. Nice but a bit out of my price range ATM. ;s.
  • Former Member
    Former Member over 11 years ago in reply to mubase +1
    seems like that should work, although I'm always slightly skeptical of things like that on ebay serial console is fairly simple to get going, worry more that the post office won't deliver it
  • Former Member
    Former Member over 11 years ago in reply to mubase +1
    steven scutt wrote: OK. The time and date on my board was set to 1970... I kept getting a message during the compile about some process or other being in 2012... Ah yes... various things stupidly…
  • Former Member
    Former Member over 11 years ago

    LCD8000-97CLCD8000-97C don't be put off by it saying Sabre-Lite / MarS, it works just fine with RIoTboard. It connects to the LVDS connector and leaves the HDMI socket free.

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  • mubase
    mubase over 11 years ago in reply to Former Member

    Hi selsinork. Hmmm. Nice but a bit out of my price range ATM. ;s.

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  • mubase
    mubase over 11 years ago

    Would an HDMI to VGA converter work???

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  • Former Member
    Former Member over 11 years ago in reply to mubase

    Theoretically yes, same problem as you've probably read about with the Raspberry Pi though. You need an active, powered, converter. Not one of the passive ones.

    Something like ELEMENT14 - PIVIEW - ADAPTER, RASPBERRY PI, HDMI TO VGA ELEMENT14 - PIVIEW - ADAPTER, RASPBERRY PI, HDMI TO VGA will likely work

     

    If your monitor has DVD-D input then it's possible to use a passive HDMI->DVI converter, but that won't work for VGA / DVI-I

     

    Essentially anything that has an HDMI input should be able to be connected.. While it's not possible to be 100% certain, I suspect your tablets have HDMI outputs in order to be able to connect them to bigger screens.  You most likely can't use these to connect to the RIoTboard as you'd be connecting an output to another output.

     

    Having said that, I fully expect someone will turn up shortly and give us an example of a tablet that does have an HDMI input image

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  • mubase
    mubase over 11 years ago

    Something like this then.. ?

    1080P HDMI to VGA M/F Active Adapter for Raspberry Pi Model B UK | eBay

     

    You're right selsinork. My tablets are HDMI out for output to big screens...no input.

    First things first though... the board has to

    1. Arrive.

    2. Be configured.

    3. Be recognised and communicable with Terminal. image

    I am quite excited.

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  • Former Member
    Former Member over 11 years ago in reply to mubase

    seems like that should work, although I'm always slightly skeptical of things like that on ebay image

     

    serial console is fairly simple to get going, worry more that the post office won't deliver it image

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  • tusharp
    tusharp over 11 years ago

    If you looking for something in small screen, we got LCD 8000-97CLCD 8000-97C .

    Its connected through LVDS terminal.

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  • mubase
    mubase over 11 years ago in reply to tusharp

    HI tusharp. thanks but read the second & 3rd entries of this thread... too pricey. image

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  • mubase
    mubase over 11 years ago

    Hello . image

     

    Well I got the HDMI to VGA cable today. (As mentioned above..)

    Plugged it into the HDMI connector of the board and plugged a dell LCD monitor into the VGA end of the adapter...

    Turned on the board and!!!!!

    NOTHING!!!

    I also tried plugging it into my laptop VGA socket. The laptop screen border changes but TIA... hmmm....

    Anyone have any ideas or experience of what I can do?

    (apart from spending hundreds of punds on something I don't have the moolah for at the moment...?)

     

    Cheers,

    Steve.

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  • Former Member
    Former Member over 11 years ago in reply to mubase

    Unfortunately, no idea...  I've never had to use one of these as all my displays have either DVI-D or HDMI.

     

    Are you using Android or Linux ?  I've had trouble with Android on mine picking really odd screen settings (640x480 on a 1600x1200 display etc) often resulting in blank or unuseable display.

    If you're using Linux and can get connected to the board via either serial console or ssh you may be able to examine the ddc and see what mode is being selected based on that data. You can probably also force a mode by changing the bootargs in the u-boot environment.

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