Fluid Ardule UI Design (v1 Draft)

• UNO = UI frontend
• Pi = backend engine
• Minimal controls, maximum clarity
• 1602 LCD = status + simple menu + confirmation only

FluidArdule OK
SF:SalC5 Vol:78

MIDI IN:Active
DAC:USB Audio OK

HOME
├─ Volume (read-only)
├─ SoundFont
├─ MIDI Info
├─ System
└─ Power

• Navigate menu
• Change values

• Enter menu
• Confirm selection

• Home: Panic
• Menu: Back/Cancel

• Slow blink: Booting
• Fast blink: Initializing
• Solid: Ready

• Blink on MIDI activity

• Slow blink: Missing device
• Fast blink: Error

CMD PANIC  
CMD SF_LOAD <name>  
CMD RESCAN_DAC  
CMD SHUTDOWN  

ACK <cmd>  
ERR <code>  
STATE <status>  
INFO <key> <value>  
HB  

1. Home screen + LED
2. Menu navigation
3. Panic
4. SoundFont
5. Power
6. System/MIDI info

Home screen switching:

Recommended: LEFT/RIGHT buttons

Reason:

• Semantic match (screen pages = horizontal concept)
• Less conflict with menu navigation (UP/DOWN)
• More intuitive for users

Alternative:

• UP/DOWN 가능하지만 메뉴 이동과 혼동 가능

Conclusion: 👉 LEFT/RIGHT = Best choice for Home A ↔ B switching