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direct HDMI -> USB UTV0007 grabber - anybody have experience with this?

Discussion in 'Hyperion Hardware' started by abrenoch, 12 January 2018.

  1. abrenoch

    abrenoch Member

    Messages:
    31
    Hardware:
    RPi1/Zero, RPi2
  2. Akriss

    Akriss Member

    Messages:
    185
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    I picked one up. It works with some caveats. it gets Extremely hot. I put heatsinks on the one I bought and recorded a 140F on the outside of the large black heatsink.
    Also it back feed's power too the USB port from the HDMI port, (might be why it gets so hot) so if you need to reboot the Rpi you well need to completely unplug the grabber so everything can reboot.

    I'm not to sure about this one.



    . 20180112_155709.jpg 20180112_155731.jpg 20180112_155756.jpg 20180112_155809.jpg

    Hope it helps.
     
    Last edited: 12 January 2018
  3. abrenoch

    abrenoch Member

    Messages:
    31
    Hardware:
    RPi1/Zero, RPi2
    Hey thanks for the reply!

    Wow I gotta say, that isn't a problem I would have anticipated it having! What resolution were you running that one at?

    I decided to grab one since they are so cheap (the least I can do to give back to this community is document my folly so someone else can learn from it), maybe heat problems are why most of the devices are in metal housings. Are those heat sinks anything specific you picked up, or did you just cut some down to size?
     
  4. Akriss

    Akriss Member

    Messages:
    185
    Hardware:
    RPi1/Zero, RPi2, RPi3, 32/64bit, +Arduino, +nodeMCU/ESP8266
    720 X 480.

    Had them laying around. I believe the silver one's are 8x8mm and the black one is 10X15mm. Just eye balled them not a actual.

    I haven't had a chance to run a very long test. The power back feed is from the hdmi to the usb is bugging me. I've tried adding a diode to the 5v+ on the usb side to allow currant to flow only from the usb to the hdmi. It kinda works but the grabber never is truly powered off, and when starting the Rpi it well not recognize the usb grabber till it is also power cycled.

    Adding a diode to the 5v+ on the hdmi cable did not have the desired effect, I lost audio (i think that was the 5v+ wire in the hdmi cable).

    I also bought a couple of known working utv007 grabbers and hdmi to rca converters as well.