Port Expanders Extend MCU Functionality | DigiKey
Remote MCP23017 I2C 16-bit Port Expander Breakout Board — PMD Way
MCP23008 - i2c 8 input/output port expander : ID 593 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
16 Io I2c Io Expander I2c Port Expander Mcp23017
Daktronics Port Expander – Serial Tools
SF-3 Port Expander | Celtic Engineering Solutions
CTI 2571 505 SERIES PROGRAM PORT EXPANDER | eBay
$2.99 - 16 Port Expander: I2C MCP23017 - Tinkersphere
MCP23017 I2C 16-bit Port Expander Breakout Board - Ten Pack — PMD Way
Vertical Express | PCB, PORT EXPANDER, MERID
Microchip Technology Inc. MCP23017-E/SP I/O Port Expander, 16-Bit, I2C I'face, SDIP-28: Amazon.com: Industrial & Scientific
GMS 10 | Garmin
MCP23017 - i2c 16 input/output port expander
pyControl - Port Expander - LABmaker
Pcf8575 Io Expander Module I2c To 16io Integrated Circuits For Arduino - Instrument Parts & Accessories - AliExpress
I/O Expander - MCP23008 - COM-15099 - SparkFun Electronics
$3.29 - 16 Port Expander: SPI MCP23S17 - Tinkersphere
MikroElektronika - Port Expander Board - MCP23S17 Development Tool
CISCO UCSB-MLOM-PT-01 - Cisco UCS Port Expander Card (mezz) for VIC
PCF8575 I2C IO Extension Shield Module 16 I/O Port Expander Arduino PI | eBay
MAX7313 16-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection | Analog Devices
IO-Port Expanders Offer Flexibility in MCU Designs | DigiKey
Daktronics Port Expander - Graphics Outfitters
Raspberry Pi Port Expander HATs | The Pi Hut
Adafruit GPIO Expander Bonnet - 16 Additional I/O over I2C : ID 4132 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
MCP23017 - i2c 16 input/output port expander : ID 732 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Port Expander Library
I2C Port Expander Board (Arduino code included!) from Celtic Engineering Solutions on Tindie
