The PCA9536 is a 4-bit I/O digital expander, which communicates via an I2C bus. The expander can read or write four separate I/O. This IC is used on the SparkX RGB breakout to turn on/off the various ...

Arduino library for the SX1509 16-I/O expander. Capable of driving LEDs - with blink, and breathe functions - or monitoring up to 64 buttons in an 8x8 array. Are you low on I/O? No problem! The SX1509 ...