MCP23017 IO Expansion Board SKU: CQRMCP23017A
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Description
The 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.
Features
- I2C controlled, expands 2 signal pins as 16 I/O pins
- I2C address configurable by shorting the A0/A1/A2 jumpers
- Up to 8 MCP23017 IO Expansion Board can be used at the same time, providing up to 128 I/O pins.
- Onboard voltage translator, compatible with 3.3V/5V level
- Comes with development resources and manual (examples for Raspberry Pi / micro:bit / Arduino / STM32)
Interface Description and Size
Connection Diagram
Connect to Arduino:
- Note: Do not connect the DuPont female single-head wire directly to the UNO R3 control board. You need to stack the sensor expansion board on the UNO R3 control board or connect the male-to-male Dupont wire on the Dupont female single-head wiring(bread wire).
- We connected the 4Pin interface of the sensor to the UNO R3 control board in the experiment.
Connect to Raspberry Pi:
- We connected the 4pin interface of the sensor to the Raspberry Pi 4B control board in the experiment.
