A couple of HDMI to VGA adapters (BeagleBoard, Pandaboard and Raspberry Pi)

Recently I acquired a couple of HDMI 2 VGA converters. I'm interested on interfacing my small boards to VGA devices and, as many of us already know, finding a working one is a trial and error process. So here are my results and I hope may be useful for somebody else.

I've got two different models (powered and unpowered) and tested them with my HDMI enabled boards (BeagleBoard, PandaBoard and Raspberry Pi). These are the links to the devices in case you are interested.

http://dx.com/p/hdmi-male-to-vga-female-adapter-black-15cm-cable-156981

http://dx.com/p/hdmi-to-vga-video-converter-71816

The big one, requires an external power source. It comes with an american flat plug so I needed an adapter.

Powered HDMI to VGA converterPowered HDMI to VGA converter

It is pretty small and it worked OK with all of the boards (BeagleBoard, Pandaboard and Raspberry Pi).

A couple of pictures to get and idea of its size

Raspberry PI and powered HDMI to VGA converterRaspberry PI and powered HDMI to VGA converter

Same picture with the Beagleboard

BeagleBoard with powered HDMI to VGA adapterBeagleBoard with powered HDMI to VGA adapter

And a third one close to the bigger Pandaboard

Pandaboard and HDMI to VGA powered converterPandaboard and HDMI to VGA powered converter

I haven't made any technical analysis of the output quality for the device, however I cannot spot any difference between a direct HDMI connection to my display and the output of the device, so for me it is more than OK but this is a pretty subjective matter.

The second adapter is a lot smaller and also cheaper. I would say that one pro for this one is the HDMI connector itself, which is quite small as well as the flexible cable. Most of my HDMI cables are pretty rigid and have huge connectors that take a lot of space.

I couldn't try this one with my Pandaboard (it recently died). The test result was a bit disappointed for me, as it didn't worked with the Beagleboard. The device was unstable and when working, the display reported lost of signal after around one minute. I remember a post from somebody having a similar problem with one of those unpowered converters. He changed one of the components to avoid the screen going blank. I cannot find the post right now.

As you can see in the picture below, this one is a lot smaller and it does not need an external power source

Beagleboard with unpowered HDMI to VGA converterBeagleboard with unpowered HDMI to VGA converter

I tried the same converter with the Raspberry pi and it worked OK. I haven't use it extensively but seems to work. I booted the board up, started the X-Server and then switched it off... I would say the whole test took around 5 minutes.

A nice side effect of this tests is that I had configured my Beagleboard and Raspberry pi to boot from a HD. My SD card got crazy whenever the screen went away and I had to badly reboot the Beagleboard so I tried the HD. The responsiveness get improved on both cases, however I was expecting the Raspberry to be better when working from a external hard drive. The beagleboard was more responsive even when it was running a full Ubuntu distro, when compared to the light official Debian based distro for Raspberry PI.

Here is a picture of the thing...

Beagleboard with external Hard driveBeagleboard with external Hard drive

All the best for the new year 2013!

The picoFlamingo Team

Comments

Current booster for unpowered converter

"I remember a post from somebody having a similar problem with one of those unpowered converters. He changed one of the components to avoid the screen going blank. I cannot find the post right now."

I think this is the post you are looking at:
http://creativityslashdesign.blogspot.it/2013/06/hdmi-current-booster-fo...

Cheers