Difference between revisions of "I/O Expander Shield with MCP23017"
| Line 1: | Line 1: | ||
| + | ==Description== | ||
| + | |||
| + | I/O Expander shield is a shield used to expand the number of I/Os of an Arduino Uno. It is based on the chipset MCP23017. The chipset MCP23017 communicates with Arduino Uno through I2C interface. It adds GPIOA and GPIOB, a total of 16 I/Os. There are two LEDs and two buttons on the shield. User can decide if they want to use the built-in LED/buttons or not by using the 4-bit DIP switch. | ||
[[File:IOExpand shield 1.jpg|400px]] | [[File:IOExpand shield 1.jpg|400px]] | ||
Revision as of 09:34, 10 April 2014
Description
I/O Expander shield is a shield used to expand the number of I/Os of an Arduino Uno. It is based on the chipset MCP23017. The chipset MCP23017 communicates with Arduino Uno through I2C interface. It adds GPIOA and GPIOB, a total of 16 I/Os. There are two LEDs and two buttons on the shield. User can decide if they want to use the built-in LED/buttons or not by using the 4-bit DIP switch.
