How To Use A MCP23017 I2C Port Expander With The Raspberry Pi - Part 1 - Raspberry Pi Spy
40 GPIO I2C expander with the PCA9698 – Nadim Conti
![Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/4132-09.jpg "Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits")
Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: ALMOCN 10pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module for Arduino Raspberry Pi : Electronics
NEW PRODUCT – Adafruit GPIO Expander Bonnet – 16 Additional I/O over I2C « Adafruit Industries – Makers, hackers, artists, designers and engineers!
DIN Rail Mount MCP23017 32-Channel GPIO Expander with I2C Interface for Arduino Raspberry Pi, 3.3V/5V Power - AliExpress
Rs-Pi I/O io SPI 23s17 x8 -V3 128 GPIO Board for Raspberry Pi model A B B+ B2 B3 | eBay
PCF8574T PCF8574 I2C 8 Bit IO GPIO expander module for Arduino & Raspberry Pi | eBay
![Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/4132-10.jpg "Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits")
Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Adafruit MCP23017 I2C GPIO Expander Breakout (STEMMA QT / Qwiic) | The Pi Hut
Overview | Adafruit GPIO Expander Bonnet for Raspberry Pi | Adafruit Learning System
How can I debug why the Pi will only recognize some of the GPIO expanders over i2c? - Raspberry Pi Stack Exchange
32 Channel Digital Expansion HAT for Raspberry Pi - RobotShop
Adafruit MCP23017 I2C GPIO Expander Breakout (STEMMA QT / Qwiic) | The Pi Hut
GPIO Expander For RPi Pico, 1x Raspberry Pi Standard 40-Pin, 1x Pico 2x20-Pin - RobotShop
Raspberry Pi and GPIO Expansion Using the MCP23S08 – Widgetlords Electronics
MCP23017 16 bit I/O Expansion Board I2C Interface for Raspberry Pi
MCP23017 GPIO Expander for Raspberry Pi - SWITCH-SCIENCE
GPIO Expander Bonnet for Raspberry Pi - Adafruit | Mouser
MCP23008 MCP23017 24-Channel Digital Input/Output with I2C Interface - NCD Store
![Adafruit MCP23017 I2C GPIO Expander Breakout [STEMMA QT / Qwiic] : ID 5346 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits](http://www.adafruit.com/images/480x360/5346-05.jpg "Adafruit MCP23017 I2C GPIO Expander Breakout [STEMMA QT / Qwiic] : ID 5346 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits")
Adafruit MCP23017 I2C GPIO Expander Breakout [STEMMA QT / Qwiic] : ID 5346 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Interfacing an I2C GPIO expander (MCP23017) to the Raspberry Pi using C++ (SYSFS) « Adafruit Industries – Makers, hackers, artists, designers and engineers!
![Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/4132-07.jpg "Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits")
Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C [STEMMA QT / Qwiic] : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
