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VAVA 4K - HDMI CEC Power on and off

Ben Nyx

February 10, 2022 17:30

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Hello! I'm having trouble getting the VAVA 4k projector to turn on an off with HDMI CEC

I have "HDMI CEC" and "CEC Power Off" and "HDMI 2.0" enabled on the projector settings.

I have a XT1144 plugged into it with a HDMI 2.0 cable, and I've tried testing the following commands individually with a test presentation, but none of them are working for me

BrightControl DisplayOn
BrightControl DisplayOff

Video Disable monitor power save mode
Video Enable monitor power save mode

BrightControl Send Hex String E0 04
BrightControl Send Hex String E0 36

 

Any ideas how I can control the projector with HDMI CEC and a projector?

 

I also have a support ticket open with VAVA in case the issue is on their end.

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3 comments

• 0
  
  michal mitro September 12, 2024 10:26

  hey! any updates? having similar issues here, albeit with TV. could you also share where did you get the hex strings from?
  cheers!
  mizu

• 0
  
  Ben Nyx September 12, 2024 13:21

  Yeah so VAVA support told me that their projectors do support HDMI CEC, however, they have it set up so the projector can ONLY send, not recieve HDMI CEC commands. So you can't control it with a Brightsign.

  I literally ended up connecting an Arduino and a servo motor to press the power button on the VAVA bluetooth remote. I used the Brightsign's GPIO output to send a command to the arduino to trigger it to press the power button.

  The annoying part with that is the VAVA remote has a power button that toggles the state and sometimes the servo button presser wouldn't always trigger the projector to turn off, so having it turn off at night and back on in the morning didn't always go as expected.

• 0
  
  michal mitro September 13, 2024 15:40

  Thanks for the answer Ben! 

  haha thats ridiculous we need to resolve to diy solutions after all the money has been poured into hifi smart solutions. 

  Hope i ll end up figuring this without arduino (although nothing suggests taht so far.. :P)