CQRobot Ocean: MCP23017 IO Expansion Board expands 2 signal pins as 16 I/O pins based on the I2C bus, up to 8 MCP23017 IO Expansion Board can be used at the same time, providing up to 128 I/O pins, it is compatible with both 3.3V and 5V levels. Note: For technical support, please refer to CQRobot Wiki to get the test code, SKU: ? CQRMCP23017A. SPECIFICATION IO Expansion Board Specifications - Operating Voltage: 5V/3.3V - Interface: I2C - Interrupt Pins: INTA, INTB - Expansion I/Os: 16 - Dimension: 45.24mm * 31.79mm - Mounting Hole Size: 3.0mm Ocean Wire Specifications - Cable specifications: 22AWG - Material: Silicone - Withstand Voltage: Less Than 50V - Withstand Current: Less Than 1000MA - Length: 21cm - Line Sequence: Black-negative power supply, Red-positive power supply, Green-SDA, Blue-SDA, Yellow-INTA, Orange-INTB. DISTRIBUTION LIST 1 * MCP23017 IO Expansion Board 1 * Ocean Interface JST 6-Pin Cable See more

Ocean interface Wire: 22AWG environmentally friendly high temperature resistant silicone wire, JST-PA SMT 6-Pin to DuPont female single head, wire length 210mm. UP to 8 MCP23017 IO Expansion Board can be used at the same time, providing up to 128 I/O pins. I2C address configurable by shorting the A0/A1/A2 jumpers. I2C controlled, expands 2 signal pins as 16 I/O pins. MCP23017 IO Expansion Board Compatible with Arduino Motherboard, Raspberry Pi Motherboard, Micro:bit Motherboard and STM32 Motherboard.