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20 lines
1.7 KiB
Markdown
20 lines
1.7 KiB
Markdown
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# DonConPad - A Simple I2C Gamepad with Display
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This board breaks out an MCP23017 I/O expander to some conveniently placed push buttons and offers a spot for an SSD1306 OLED display.
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Both I/O expander and display are connected to the same i2c bus.
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The i2c address for the MCP23017 can be configured using the jumpers JP1, JP2 and JP3, which are pulled down to GND when open.
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## Bill of Materials
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| **Reference** | **Description** | **Digikey Part** | **Notes** |
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| ---------------------- | :-------------------------: | :--------------------------: | :-----------------------------------------------------------------------: |
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| J1 | SSD1306 OLED Display Module | - | Dimension wise 128x64 or 128x32 should fit. Make sure the pinout matches. |
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| U1 | MCP23017 IO Expander | MCP23017-E/SO-ND | |
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| SW1-14 | 6x6mm Tactile Switch | e.g. TS02-66-60-BK-100-LCR-D | |
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| C1 | 0.1µF SMD Ceramic Capacitor | 1276-1003-1-ND | |
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| C2 | 10µF SMD Ceramic Capacitor | 1276-6454-1-ND | |
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| R1, R2, R3, R4, R5, R6 | 10kΩ SMD Resistor | 2019-RK73H2ATTD1002FCT-ND | |
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