GitHub - thebradleysanders/ESPHome-Arduino-Port-Expander: An Arduino Port Expander for ESPHome with added Arduino Mega 2560 support
PCF8574 I2C to 8-bit digital port expander
Using GPIO Expander MCP23017 With Arduino (Get up to 144 GPIOs) - Makerguides.com
How to Read Input From an MCP230xx I/O Port Expander Connected to an Arduino
Issue with sensors connecting to arduino uno via Hardware serial portexpander8:1 - Programming Questions - Arduino Forum
Port expander MCP23017 • Wolles Elektronikkiste
Interface MCP23017 (Port Expander) With Arduino Uno - YouTube
MCP23017 I2C I/O Port Expander - NIKOLAUS-LUENEBURG.DE
I2C to GPIO IO Expander Breaktout Board CH423 – ElectroDragon
UART-Serial-USB : Serial Port Expander 8:1 Arduino Compatible ...
Arduino Compatible LCD I2C Port Expander Module | Jaycar Electronics New Zealand
i2c - Does an I²C IO Expander needs additional resistors for outputs? - Arduino Stack Exchange
NANO I2C IO Expander - Hackster.io
arduino - Software implementation of I2C bus via port expander - Stack Overflow
Arduino Port Expander — ESPHome
Amazon.com: ACEIRMC 3pcs PCF8575 IO Expander Board Module I2C to 16IO IIC I2C I/O Extension Shield Module 16 bit SMBus I/O Ports for Arduino R3 (3pcs) : Electronics
Amazon.com: Comimark 3Pcs PCF8574 PCF8574T I2C 8 Bit IO GPIO Expander Module for Arduino & Raspberry Pi : Electronics
Atlas Scientific COM-102 Serial Port Expander (4 Port)
Pcf8575 Io Expander Module I2c To 16io For Arduino - Replacement Parts - AliExpress
PCF8574 I2C To 8-Bit Digital Port Expander
64 I/O Expander Shield for max 1024 I/O - Other Hardware Development - Arduino Forum
Amazon.com: Atlas Scientific 8:1 Serial Port Expander : Electronics
8:1 Serial Port Expander | Atlas Scientific
Using ESP01 adapter with Arduino Port Expander. Only RX/TX exposed. Can I change the pin definitions and use this? Trying to add esp home to my pool controller : r/Esphome
How to Connect an MCP23008 I/O Port Expander to an Arduino
Low cost Digital and Analog IO Expander Shield | Numato Lab
