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A newcomer asks about Riotboard HDMI...

mubase

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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  • 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.

  • in reply to mubase
    plugged a dell LCD monitor into the VGA end of the adapter

    HDMI interfaces are highly supported but with vga connectors may not work.

    apart from spending hundreds of pounds ...

    serial console is nice and good if there is no display specfic work.

    I mentioned the software setup here and hardware connection here.

     

    Hope that helps for the moment.

  • in reply to tusharp

    tusharp wrote:

     

    plugged a dell LCD monitor into the VGA end of the adapter

    HDMI interfaces are highly supported but with vga connectors may not work.

     

    BUT WHyyyyy??

    There must be a workaround... Its a simple active VGA to HDMI adapter that supposedly works on the R-PI...Is it worth trying???

  • in reply to mubase

    BUT WHyyyyy??

    There must be a workaround... Its a simple active VGA to HDMI adapter that supposedly works on the R-PI...Is it worth trying???


    The RIoTBoard has some problems with the Android image right now when it comes to HDMI or Audio output.

     

    I have a philips TV and a Samsung Monitor. Both with HDMI input.

     

    The Samsung Monitor is working with both. Android and Linux.

    But my Philips TV only works with Linux. No matter what resolution I use.

     

    Try to flash the Linux Image and test it again. If you get an image there, than you at least know if it´s an Android problem. Or the converter just doesn´t work at all.

     

    Also I´d use an active converter with external power supply. Like this one: HDMI Converter - HDMI to VGA plus + Audio (SPDIF Optical and Phono L/R) | eBay

  • in reply to radiatortwo

    Hi Otto & thanks for the reply. image

     

    OK. I would like to try Flashing Linux onto my board. I have seen selsinorks' tutorials on upgrading  uboot and flashing a LInux image. He uses a Sabre lite board to do all this. COuld oyu tell me the best way of doing this? I don't have a sabre lite board... I have a windows 7 laptop and the board (running on Teraterm thru a USB to serial board which works fine.)

    Thanks again,

    Steve.

  • in reply to mubase

    If you only want to test it then you don´t need to build and compile the newest Kernel.

     

    You can download the ubuntu image here.

    http://downloads.element14.com/linux/Linux.zip?ICID=knode-riotboard-quick&COM=RIoTboard

     

    You then only have to extract the mfgtools folder.

    Then rename the file ucl2.txt to ucl2.xml. It should be somewhere inside the profiles folder.

     

    Then start MfgTools, turn off the board and put the dip switches to 1 Off and 5 Off. All other switches to On.

    Like described here. The specified item was not found.

    Then Power the RIoTBoard on and connect it with USB to J11 (next to the Ethernet port not J14).

     

    Mfgtools then should show you HID Device found. Then just click start.

    This takes a while. But when it´s finished the bar turns green. Then click Stop and close.

     

    Put then the dip switches back to 2 Off and 5 Off. Rest On. And you´re done.

    But always remove the power supply if you change switches.

    Also what I have after flashing is that I also have to remove the USB connection to turn it completely off. (It´s running only with USB power at that state somehow...)

  • in reply to mubase

    I have a windows 7 laptop and ...

    chris mentioned in a blog post on How-To change /flash OS in windows  here.

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