MyMenu

Features

MyMenu is a self contained menu system with these features:

• 0.96" OLED
• Menu Pushbuttons
  • 5 Way Keypad (Up, Down, Left, Right, Select)
• Direction, Select buttons
• 2-wire I2C (VCC, GND, CLK, DATA) interface
  • Selectable I2C address in range 0x20-0x27 (resistor install option)
  • Interrupt output line on button press
• MCP23008 I2C Port Expander
• OLED connection - mounts OLED to card and shares I2C connection to Host
• 3 LEDs
• 49x49mm card with (4) 4-40 mounting holes

MCP23008 I2C Port Expander

Data Sheet

GPIO Port Map
GP0 - LED D3
GP1 - LED D2
GP2 - LED D1
GP3 - Select button 0 = pressed
GP4 - Right button
GP5 - Down button
GP6 - Up button
GP7 - Left button

OLED Display

• On ebay...
• There are several versions
• MyMenu requires
  • 4-pin I2C version
  • Rev X1-X3 requires pin Ordering VCC, GND,

Rev X3 Connectors

The card has a 5-pin, 0.1" spacing connector. The connector has I2C connections (CLK and DATA) plus an Interrupt line.

1. GND
2. VCC
3. SDA
4. SCL
5. INT

The card has a 4-pin, 0.1" spacing connector for daisy-chaining. The connector has I2C connections (CLK and DATA).

1. GND
2. VCC
3. SDA
4. SCL

Arduino Libraries

• The Display library is decoupled from the MyMenu library and requires a separate install

MyMenu Card Library/Examples

• MyMenu library on GitHub
• Can download the ZIP file and use the ZIP library installer
• Card requires the Arduino Adafruit MCP23008 library
• Needs to be installed separately from the MyMenu library
• MCP23008 is the I2C interface chip that communicates with the buttons and LEDs
• Tested with Adafruit MCP23008 library version 1.0.1
• Driver is used to talk to the buttons/LEDs on the MyMenu card
• Driver can be installed from the Arduino IDE - search "Adafruit MCP23008"
• MyMenu card example code

Driver/Example code

• Github Arduino Driver code
• Github Arduino Example code

Parts List

• MyMenu Assembly Sheet