Mcp23017
What is Mcp23017
The MCP23017 is an I/O expander chip that allows for the expansion of input and output pins on a microcontroller via the I²C interface. It provides 16 additional GPIO pins, allowing for the connection of more devices and sensors to platforms like Arduino.
Use cases
The MCP23017 is commonly used in projects requiring multiple digital inputs or outputs, such as controlling LEDs, reading buttons, or interfacing with various peripherals. It’s especially useful in applications where I²C connectivity is preferred for efficient pin management.
How to use
To use the MCP23017 library, first ensure the I²C (Wire.h) library is initialized. Then, install the MCP23017 library via the Arduino IDE by importing the downloaded zip file. After installation, you can utilize simple functions like pinMode, digitalWrite, and digitalRead to easily interact with the I/O expander.
Key features
Key features of the MCP23017 include the expansion of GPIO pins with I²C communication, straightforward file functions for easy operation, and the capability to connect multiple MCP23017 devices on the same I²C bus, effectively increasing the number of I/O pins.
Where to use
The MCP23017 is suitable for use in various scenarios, such as robotics, home automation, and interactive installations, where there is a need for multiple input/output devices without exhausting the available pins on the main microcontroller.
Overview
What is Mcp23017
The MCP23017 is an I/O expander chip that allows for the expansion of input and output pins on a microcontroller via the I²C interface. It provides 16 additional GPIO pins, allowing for the connection of more devices and sensors to platforms like Arduino.
Use cases
The MCP23017 is commonly used in projects requiring multiple digital inputs or outputs, such as controlling LEDs, reading buttons, or interfacing with various peripherals. It’s especially useful in applications where I²C connectivity is preferred for efficient pin management.
How to use
To use the MCP23017 library, first ensure the I²C (Wire.h) library is initialized. Then, install the MCP23017 library via the Arduino IDE by importing the downloaded zip file. After installation, you can utilize simple functions like pinMode, digitalWrite, and digitalRead to easily interact with the I/O expander.
Key features
Key features of the MCP23017 include the expansion of GPIO pins with I²C communication, straightforward file functions for easy operation, and the capability to connect multiple MCP23017 devices on the same I²C bus, effectively increasing the number of I/O pins.
Where to use
The MCP23017 is suitable for use in various scenarios, such as robotics, home automation, and interactive installations, where there is a need for multiple input/output devices without exhausting the available pins on the main microcontroller.
Content
MCP23017
MCP23017 is an Arduino Library that allows to easily comunicate with a MCP23017 I/O-Expander Chip using I²C.
Dependencies
- Reuires the I²C (Wire.h) Library to be initialized
Instalation
- Download the latest version of the library from url=https://github.com/flouis01/MCP23017-Library-Arduino/releases and save the file somewhere
- In the Arduino IDE, go to the Sketch -> Import Library -> Add Library… menu option
- Find the zip file that you saved in the first step, and choose that
- Check that it has been successfully added by opening the Sketch -> Import Library menu. You should now see MCP23017 listed among the available libraries.
Usage
This library Simplifies the comunication with the MCP23017 I/O-Expanderdown to simple Functins (pinMode, digitalWrite, DigitalRead).