Stemma QT PCF8574 GPIO Expander #comingsoon

The PCF8574 is an ultra-low-cost I2C GPIO expander that works with 3-5V logic, lets turn it into a lil Stemma QT breakout for adding 8 I/O pins for only a few bucks! There’s 3 address jumpers on the back so you can have up to 8 of these on one bus.