Adding an MCP23017 16 port IO expander to Arduino or Esp8266 or Attiny85 or…….. – Arduino, ESP8266, ESP32 & Raspberry Pi stuff
Interface MCP23017 (Port Expander) With Arduino Uno - YouTube
I2C Port Expander Board (Arduino code included!) from Celtic Engineering Solutions on Tindie
Amazon.com: DKARDU 2 pcs PCF8575 IO Expander Board Module I2C to 16IO Module I/O Extension Shield Module 16 bit SMBus I/O Ports with Dupont Cable for Arduino UNO R3 : Electronics
Arduino Port Expanders: How to Instantly get More Pins
10PCS PCF8575 Module Expansion IO port Expander board DC 2.5-5.5V I2C communication control 16 IO ports For Arduino - AliExpress
GitHub - thebradleysanders/ESPHome-Arduino-Port-Expander: An Arduino Port Expander for ESPHome with added Arduino Mega 2560 support
Port expander MCP23017 • Wolles Elektronikkiste
PCF8575 I2C IO Extension Shield Module 16 I/O Port Expander For Arduino PI | eBay
I/O Expander Shield for pcDuino | LinkSprite Learning Center
Tutorial: Maximising your Arduino's I/O ports with MCP23017 | tronixstuff.com
Control Up to 65,280 Relays with Your Arduino! - Hackster.io
Using GPIO Expander MCP23017 With Arduino (Get up to 144 GPIOs) - Makerguides.com
MCP23017 I2C 16-bit Port Expander Breakout Board for LCDs — PMD Way
Amazon.com: AITRIP 10pcs PCF8574 IO Expansion Board I/O Expander I2C-Bus Evaluation Development Module for Arduino & Raspberry Pi : Industrial & Scientific
Arduino Best expander Input/Output | GPIO Expansion module | MCP23017, MCP23S17 - YouTube
Amazon.com: Atlas Scientific 8:1 Serial Port Expander : Electronics
NANO I2C IO Expander - Hackster.io
Pcf8575 Io Expander Module I2c To 16io For Arduino - Replacement Parts - AliExpress
Read data from MCP23017 (Port Expander). - YouTube
8:1 Serial Port Expander | Atlas Scientific
