D.D.E.D Contributers Guide

Subsystems

• Physical Menu Interface - LCD / Button UX - Tauheed
• App Menu Interface - Bluetooth / Android - Rishi
• Drink Dispensing - H-Bridge Control - Seth
• Audio Playback - SD Card / Speaker Driver - Rishi/Brandon

Specifications

Refer to the Design Spec, these include:

• Arduino pin allocation
• Edge cases - Please add to this list!
• State machine to act as a structural guide for the code

Contributing Styleguide

Please use well-named camalCase variables, for example: stateRunGame instead of: staterungame

• Try and limit the use of global variables
• Keep functions as short as possible and easy to read

Libraries

EEPROM

• Required for saving non-volatile data on the Arduino
• Reference

LiquidCrystal

• Standard libary to help manage LCD states
• Our panel is 4x20 pixel
• Reference

Chrono

• Timing library that will be primarily used for user-input timeouts
• Reference

Bluetooth

• Not really a library, but refer to this tutorial to implement bluetooth using a serial connection

Issues

• Code filesize may be too large for the Mega
• Edgecases may not be covered in production
• Too much current drawn from the Mega