Heart & Industry

Home · Electronic components · Pimoroni

Adafruit PCF8575 I2C 16 GPIO Expander Breakout

Adafruit PCF8575 I2C 16 GPIO Expander Breakout

Pimoroni

£5.25

Price read from Pimoroni on 2026-10-22. Check before buying.

Expand your project possibilities, with the Adafruit PCF8575 GPIO Expander Breakout - an affordable 16 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. Connect it over I2C and then you can send/receive I2C commands to control the GPIO pins to write and read them. It's going to be slower than direct GPIO access, but maybe that doesn't matter if it takes a mil

Pimoroni's own words, read from their page.

Buy from PimoroniPrice seen 2026-10-22. Not an affiliate link, we earn nothing from it.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.