Want to add more digital inputs and/or outputs to your project? Now you can!
The MCP23017 is an addressable i2C digital input/output (IO) expander! It has 16 digital pins, and each can be set as an input or an output, greatly expanding your projects capabilities. But there is more! The module can be addressed, meaning you can have eight different modules on the same i2C network, giving you up to 128 extra digital pins!