Used to control this I2C I/O expander
Note: default device addresses etc suppose that the adress lines are pulled up when not explicitly set, this is what the breakout board (pca9535bo.brd) does by default (user can then pull them down via solder jumpers)
The device has no internal pull-ups that could be enabled (bit of a shame for input purposes...) so I also made a "wing" board with pull-ups and also series resistors for driving LEDs (pca9535bowing.brd)
Clone this repo to your arduino libraries folder, then clone the following repos as well
- git://github.com/rambo/I2C.git
- git://github.com/rambo/i2c_device.git