I tried to hook up some LEDs on the beagleboard-xm using an I2C LED driver (TCA6507 datasheet). Difficult part was to put the SSOP-20 chip on a breakout board (SSOP-to-DIP adapter, from sparkfun).

The TCA6507 can cope with the 1.8 V from beagleboard's expansion header and the 5 V power supply.

There is a Linux driver for the TCA6507 (since 3.3), so you can control the LEDs nicely: i2cset -f -y 2 0x45 0x02 0xff to turn on all LEDS to full brightness.

posted at: 13:38 | path: / | permanent link