STK1000/Leds
From AVRFreaks Wiki
LED's are commonly used to provide status information in designs. STK1000 provide 8 yellow LEDs and 2 RGB LEDs available to the user through headers. The most common use of the LED's is to control the LED's by GPIO.
Read the section Connection of LEDs and switches to learn more about connecting the user switches to the GPIO header.
The LEDs are located above the user switches.
Schematics
All user LEDs on STK1000 are driven by inverters. All inverters are pulled low by 100k OHM resistors to make the LEDs normally off.
To turn on a LED you must connect the LEDs to the GPIO header. Turning on a LEDs i done by setting the respective GPIO line high.
Pin outs