XICOOLEE MCP23017 I/O Expansion Board Module SG-IO-E017, 16 Pins Supports for Raspberry Pi Series, Onboard 3-Digit DIP Switch, I2C Interface Compatible with 3.3V/5V Working Level

🔌 16 Channel I2C Port Expander: MCP23017 I2C Port Expander Module provides 16 extra GPIO channels through the I2C bus, helping developers extend limited controller pins for embedded systems, maker projects and electronics prototyping. 🧠 MCP23017 GPIO Expansion Chip: Built around the MCP23017 GPIO expansion chip, this I2C GPIO Expansion Board supports digital input, digital output and interrupt function testing for flexible control and signal interface applications. ⚡ 3.3V and 5V Logic Support: The 16 channel GPIO Expander Board supports 3.3V/5V working levels, making it suitable for compatible with Raspberry Pi series boards, compatible with Arduino platforms, STM32 controllers and other I2C host devices. 🔗 Flexible Wiring Interface Design: PH2.0 connector and 2.54mm pitch solder pads are reserved on the I2C Port Expander Board, allowing easy connection to jumper wires, breadboards, custom circuits and external development boards. 🎛️ Adjustable I2C Address with Example Code: The onboard 3-digit DIP switch makes I2C address setting simple, while available C, Python, for Arduino and STM32 demo codes help users quickly verify GPIO input, output and interrupt operations.