NEW GUIDE: Adafruit PCF8574 I2C GPIO Expander #AdafruitLearningSystem #Adafruit @adafruit
Expand your project possibilities!
The Adafruit PCF8574 GPIO Expander Breakout is an affordable 8 channel I2C expander! GPIO expanders work like this: you have a board with some number of GPIO but not enough for your project – maybe you need more buttons or LEDs. You could upgrade to a board with massive number of GPIO like the Grand Central, or you could pop on one of these boards.
The Adafruit PCF8574 I2C GPIO Expander guide has everything you need to get started with this breakout. There’s an overview, pinouts, download resources, and CircuitPython and Arduino examples.
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