Example: I2C using SC126 and PCF8574 | Small Computer Central
I²C - Wikipedia
![Nettigo: PCF8574 Module - 8-bit I/O Expander for I2C Bus [Yā nǔ shén]](https://nettigo.eu/system/images/2080/original.jpg?1488806860 "Nettigo: PCF8574 Module - 8-bit I/O Expander for I2C Bus [Yā nǔ shén]")
Nettigo: PCF8574 Module - 8-bit I/O Expander for I2C Bus [Yā nǔ shén]
Using the second (I2C 0) port on a Raspberry Pi - YouTube
PCF8574T I/O for I2C Port Interface Support Cascading Extended Module
I2C - DUO Control System
Amazon.com: Grove I2C Hub - 6 Port with Grove Cable : Electronics
I2C Shield for Raspberry Pi 4, Pi 3, & Pi 2 with Inward Facing I2C Port - store.ncd.io
I2C Splitter - I2C Port Expand Board for Pixhawk with Cable
I2C Shield for Raspberry Pi Zero with Outward Facing I2C Port PR19-7
RAK4630/4631 available I2C port - LPWAN Modules / EVBs - RAKwireless Forum
arduino - Software implementation of I2C bus via port expander - Stack Overflow
I2C — How Does It Work? – Digilent Blog
PCF8574 I2C to 8-bit digital port expander
mLink 12Bit I2C Digital Port Expander
I2C Bus/Interface in Raspberry Pi
A Guide to Arduino & the I2C Protocol (Two Wire) | Arduino Documentation
AK-PCF8575 – I2C 16-bit IO Expander Breakout | Artekit Labs
I2C Port Splitter Kit (requires soldering)
MCP23008 - i2c 8 input/output port expander : ID 593 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
