RTD2668 Driver Board w/ Audio

This is our fanciest driver board. It's best for supporting high resolutions, has multiple inputs, and can support HDMI audio! That means you can have a full A/V system with only one data cable. There's a stereo amplifier onboard that can driver 4 ohm speakers directly

You can solder 3W 4 ohm speakers directly to the amp, like this one.

Or use this ready-to-go stereo speaker set, you can just plug the connector in directly!

Audio quality and video resolution

We're not 100% sure of this but it seems like the amount of sound data you can transfer is related to the set HDMI resolution.

Since this driver has a built in video scaler you can display 1280x800 video on a 800x480 display, it'll just be smaller. We noticed that many operating systems/programs try to push high quality (44.1khz 24 bit) audio and it'll stutter if the resolution is set to something like 800x480

So, if you can set the audio quality in your OS, set it to 44.1KHz 16bit or 22.1KHz 16bit or you can just set the resolution of the screen to like 1280x800 or 1280x720 type size. On a Raspberry Pi, resolution is set in /boot/config.txt, on windows, right click on the background and select Screen Resolution from the menu

The Power, VGA and A/V JST ports are good alternatives to the main inputs if you don't want bulky cables coming out the sides of your driver board.

Power input: 9-12V DC

Menu Options

Each driver board comes with a few menues of customizable settings.  We go through each below, with some helpful pictures, to show you what you're able to easily control!

The keypad buttons help you navigate the display menus and sub-menus.

As shown in the picture above:

- key is DOWN
+ key is UP
MENU key is SELECT (brings you to the next menu or option)
AUTO key is BACK

When you first start up, you can use the Auto/Back key to select the input source!

Color Menu

Picture Mode - Bright, Standard, Soft, user
Color Temp - Warm, Normal, Cool, User
DNR (Digital Noise Reduction) - Off, Low, Medium, High

Sound Menu

Sound Mode - Standard, Class, Dance, Live, Pop, Rock, User
Balance - Adjust the sound left/right balance

Function Menu

Language - There are a full range of language options for your display.  They are:

English, Mandarin, French, German, Spanish, Portugese, Korean, Russian

OSD Sub-menu:

  • OSD Time Out - Adjust the time for the display to go black
  • Transparent - Adjust the menu's transparency against the background image

Display Ratio -

  • 16:9 - similar to the screen's default setting, does not stretch image
  • 4:3 - we've found this doesn't effect the image on these displays so not sure what's up with that!
  • Auto

Reset - Reset the settings to default

Sleep Time - Up to 60 minutes - this will completely shut off the screen at the end of the set time

Blue Screen - On/Off - This changes the color of the screen on start up when you choose your input

Power Saving - 10s to 60s - how long it takes for the screen to shut off
Powertip - no idea what this does
Mode: SYS0, SYS1, SYS2, SYS3 - we've found this doesn't effect the image on these displays

This guide was first published on Aug 27, 2014. It was last updated on Aug 27, 2014. This page (RTD2668 Driver Board w/ Audio) was last updated on May 04, 2015.