DFR0626

Gravity DFR0626 I2C I/O Expansion Module

DFRobot Gravity DFR0626 I²C I/O Expansion Module is an IO expansion module that is based on the MCP23017. The module can expand an additional 16 IOs. It can set 8 I²C addresses, which means with this module, the microcontroller can connect 8 modules, and expand 128 IOs at most. The module solves the insufficient IO ports problem in applications like robots and interactive media. This Gravity MCP23017 I²C IO 16 digital IO expansion module has 2 groups of IO pins, GPIOA, and GPIOB. Each group has 8 independent IO interfaces, and each IO interface can be set to input, output, pull-up input (connect to 100KΩ pull-up resistor), interrupt, and so on.