OPEN SMART PCF8575 IO Expander Modul I2C zu 16IO I2C zu 16 bit IO expansion breakout board für Arduino|module i2c|module for arduinomodule diy - AliExpress
PCF8575 IO Expander Modul I2C Zu 16IO Integrierte Schaltungen Für arduino|Instrumententeile & Zubehör| - AliExpress
Adafruit GPIO Expander Hat - 16 Additional I/O Over I2C: Amazon.de: Computer & Accessories
MCP23S17 Bidirektionale 16 Bit I/O Expander SPI Serial Interface Schild Modul I2C Interface 10 MHz Max Hohe geschwindigkeit Bord|board module|board boardc c - AliExpress
PCA9537DP | NXP Semiconductors
MCP23008 - i2c 8 input/output port expander : ID 593 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits