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This is an IO expansion module that based on the chip MCP23017. The module can expand 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 insufficient IO ports problem in applications like robots and interactive medias.
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 100K¦¸ pull-up resistor), interrupt and so on.
Besides, the module has 2 interrupt signal pins: IA and IB. IA is used to detect the interruption in IO interfaces of GPIOA, and IB is used to detect the interruption in IO interfaces of GPIOB. When one pin of GPIOA or GPIOB interrupts, the corresponding IA or IB will produce a high-level signal.
Features
Supporting to expand 128 IOs at most
Multiple IO mode
Changeable I2C address by dial switch
Multiple VCC and GND pins leaded
Compatible with both 3.3V and 5V
Scenarios
Robots
Interactive medias
Light cube
Specification
Operating Voltage: 3.3V~5.5V
I2C Address: 0x20~0x27
Digital Input/Output: 20Ma
Signal Interrupt Pin: IA, IB
Dimension: 44x32mm / 1.73x1.26inch
Shipping List
Gravity: MCP23017 I2C 16 Digital IO Expansion Module x1
Gravity-4P I2C/UART Wire x1
This is an IO expansion module that based on the chip MCP23017. The module can expand 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 insufficient IO ports problem in applications like robots and interactive medias.
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 100K¦¸ pull-up resistor), interrupt and so on.
Besides, the module has 2 interrupt signal pins: IA and IB. IA is used to detect the interruption in IO interfaces of GPIOA, and IB is used to detect the interruption in IO interfaces of GPIOB. When one pin of GPIOA or GPIOB interrupts, the corresponding IA or IB will produce a high-level signal.
Features
Supporting to expand 128 IOs at most
Multiple IO mode
Changeable I2C address by dial switch
Multiple VCC and GND pins leaded
Compatible with both 3.3V and 5V
Scenarios
Robots
Interactive medias
Light cube
Specification
Operating Voltage: 3.3V~5.5V
I2C Address: 0x20~0x27
Digital Input/Output: 20Ma
Signal Interrupt Pin: IA, IB
Dimension: 44x32mm / 1.73x1.26inch
Shipping List
Gravity: MCP23017 I2C 16 Digital IO Expansion Module x1
Gravity-4P I2C/UART Wire x1
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