VortexApp
BLE LED controller
An Android app paired with custom firmware for controlling BLE-connected LED strips. The app handles scanning, device management, and effect selection — the firmware handles everything else, running animations directly on the nRF52840 at 60 FPS.
VortexApp
Select Device
Effects
Solid Color
BLE connection manager
Scan, connect, and manage multiple BLE devices with persistent state across sessions.
Animation selector
Scroll-wheel style picker for choosing LED animations — from Nebula Surge to Raw Noise.
Persistent preferences
Saved device list and settings survive app restarts via a custom PreferencesManager.
Modern interface
Clean, minimal UI with dark surfaces, purposeful use of color, and smooth interactions.
VortexApp is one half of a two-part system. The Android app handles scanning, connection management, and UI — but all the actual LED logic runs on custom firmware (VortexCore) flashed to a Seeed XIAO nRF52840. The app sends simple BLE commands; the controller handles everything else.
BLE service & device manager
Core connection handling, GATT communication
Animation selector UI
Scroll-wheel picker with overlay selection
VortexCore firmware
Custom BLE GATT service, EffectEngine, up to 1024 LEDs
UI redesign
In progress — refined layout and modern aesthetic
Brightness & effect controls
Fine-grained per-device control
Public release
APK + potential Play Store listing