products:i2cspilcdbackpack:index.html
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products:i2cspilcdbackpack:index.html [2010/11/02 01:50] ladyada |
products:i2cspilcdbackpack:index.html [2010/11/02 02:01] ladyada |
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| By using simple i2c and SPI input/output expanders we have reduced the number of pins (only 2 pins are needed for i2c) while still making it easy to interface with the LCD. For Arduino users, we provide a easy-to-use library that is backwards compatible with projects using the '6 pin' wiring. | By using simple i2c and SPI input/output expanders we have reduced the number of pins (only 2 pins are needed for i2c) while still making it easy to interface with the LCD. For Arduino users, we provide a easy-to-use library that is backwards compatible with projects using the '6 pin' wiring. | ||
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| + | {{ /products/i2cspilcdbackpack/i2cwire_t.jpg |/products/i2cspilcdbackpack/i2cwire.jpg}} | ||
| For advanced users, this project can be used for general purpose I/O expansion, the MCP23008 has 8 i/o pins (7 are connected) with optional pullups, the SPI 74HC595 has 7 outputs. | For advanced users, this project can be used for general purpose I/O expansion, the MCP23008 has 8 i/o pins (7 are connected) with optional pullups, the SPI 74HC595 has 7 outputs. | ||
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