MOD-RGB is our new 3 channel RGB LED controller. Each channel can control 12V 5A LEDs so it’s suitable to control high power LEDs and RGB LED stripes.
MOD-RGB directly connects to UEXT on A13-OLinuXino, iMX233-OLinuXino, OLIMEXINO-328 Ardino like, DUINOMITE(-MINI-MEGA-eMEGA), PINGUINO, OLIMEXINO-STM32(MAPLE) and we have demo codes for all these boards. With the help of RPI-UEXT it can be connected to Raspberry Pi also or Stellaris launchpad via STELLARIS-UEXT.
On top of I2C RGB control you can use MOD-RGB as Disco Light controller when you feed Audio singal to the audio connector the R, G and B channel will blink with the low-mid-high frequencies beat.
There is provision MOD-RGB to become DMX controller with MOD-RS485 connected to the UEXT connector, but the firmware is not complete to support DMX yet.
Today at 17.00 o’clock our local Bulgarian time (GMT+2) we will post on Twitter our questions.
You have one hour to reply to our tweet with the correct answer.
At 18.00 o’clock we will count the correct answers and ask random.org to generate random number in range then announce the winner and ship the board by airmail in Monday.
Good Luck!
olimex 
Sep 01, 2013 @ 11:06:31
Hi there. I have a question about the board?
I have purchased the UEXT board, RPI and the modRGB. I have power to RPI and a 12V to the mod-rpi. But do I need more power than this to have everything work propery? For example there is a 3.3v on the side and a 3.3 and 5v on the RPI to UEXT board as well. So many power points I don’t know which one to use. Any hints?