Atlas Scientific 8:1 Serial Port Expander
MCP23017 - i2c 16 input / output port expander - Melopero Electronics
MCP23008 - i2c 8 input/output port expander : ID 593 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Port Expanders Extend MCU Functionality | DigiKey
$2.99 - 16 Port Expander: I2C MCP23017 - Tinkersphere
AK-PCF8575 – I2C 16-bit IO Expander Breakout | Artekit Labs
IO-Port Expanders Offer Flexibility in MCU Designs | DigiKey
PCF8575 I2C IO Extension Shield Module 16 I/O Port Expander For Arduino PI | eBay
Daktronics Port Expander - Graphics Outfitters
pyControl - Port Expander - LABmaker
16 Io I2c Io Expander I2c Port Expander Mcp23017
CISCO UCSB-MLOM-PT-01 - Cisco UCS Port Expander Card (mezz) for VIC
10pcs Pcf8575 Module Expansion Io Port Expander Board Dc 2.5-5.5v I2c Communication Control 16 Io Ports For Arduino - Integrated Circuits - AliExpress
Inline MCP23017 I2C 16-bit Port Expander Breakout Board — PMD Way
SF-3 Port Expander | Celtic Engineering Solutions
New 16-bit GPIO Port Expander, Provides I2C interface and Level Shifting for any Peripherals
GMS 10 | Garmin
Remote MCP23017 I2C 16-bit Port Expander Breakout Board — PMD Way
Daktronics Port Expander – Serial Tools
I2C Port Expander Board (Arduino code included!) from Celtic Engineering Solutions on Tindie
Port Expander Library
MAX7321 I2C Port Expander with 8 Open-Drain I/Os | Analog Devices
PCF8575 I2C IO Extension Shield Module 16 I/O Port Expander Arduino PI | eBay
I/O Expander - MCP23008 - COM-15099 - SparkFun Electronics
Raspberry Pi Port Expander HATs | The Pi Hut
Pcf8575 Module Expansion Io Port Expander Board Dc 2.5-5.5v I2c Communication Control 16 Io Ports For Arduino - Integrated Circuits - AliExpress
8:1 Serial Port Expander | Atlas Scientific
RPI SHD DOUBLER: Raspberry Pi Shield - GPIO port expander at reichelt elektronik
Pcf8575 Io Expander Module I2c To 16io Integrated Circuits For Arduino - Instrument Parts & Accessories - AliExpress
