Features & Version History
✅ Version 1.0 – March 2025
The original release of the Kairuhs cockpit display marked a new level of realism for RC FPV avionics.
- Bench Test Demo (Feb 2025):
Our first video introduced menu navigation, the warning system, and splash screen behavior.- 6 customizable warnings: Voltage, Current, Speed, Stall, High Altitude, Low Altitude
- Warnings flashed as large red boxes with black bold text (e.g.
LOW ALT,CURRENT) - All thresholds were user-defined and could be enabled or disabled
- Warning settings and units persisted across reboots
- Telemetry Displayed:
- Altitude, Speed, Roll & Pitch Ladder, Compass, Heading, RTH Arrow
- Vario meter, Satellite count (green symbol at 7+ sats)
- Distance to Home
- Speed tape with color-coded zones
- Red “X” drawn across indicators when MAVLink is disconnected
- Super Tucano–inspired MFD showing:
- Current, Power, Throttle, Flight Mode
- Attitude (Roll, Pitch, Yaw)
- Flaps (Up / Half / Down), Gear (Up / Down)
- Battery: Cell voltage, Total voltage, Cell count
- Menu Options:
- Adjust speed/altitude units: MPH/KPH/Knots and Feet/Meters/Yards
- Brightness adjustment
- Settings stored via Preferences
- Controlled via plug-in button module
- Known Bugs (V1):
- Menu briefly showing after splash
- Distance to home showing large values when not armed
📹 Field Test
We followed with a field test video and then the full reveal.
📺 Kairuhs Artificial Horizon FPV Cockpit Display – Features, Setup, and RC Plane Flight Demo w/OpenIPC
- Demonstrated live telemetry via MAVLink (INAV → UART)
- Introduced both PFD (Garmin G1000–style AHI HUD) and MFD (Tucano style MFD) layouts
- Showed hardware, wiring, setup, and full flight demonstration
Note: V1 used 3.3V to power displays (per manufacturer recommendation) — which resulted in poor sunlight visibility.
🔄 Version 1.1 – April 2025, Refinement Begins
- Fixed V1 bugs (splash/menu glitch, unarmed distance bug)
- Added screen rotation
- Introduced AP Wi-Fi config mode (hold BOOT during power-on/reset)
- Removed legacy menu system
- Added RC channel assignment & inversion for:
- Throttle
- Flaps
- Gear
- Flight Mode
- Added new Full Compass layout
- Began modding boards to run displays at 5V for better brightness
🖥️ Version 1.2 – MAY 2025, Expanded Screen Support
- Added support for screen size:
- 1.14″ (135×240)
- MFD now displayed on 1.14″ screens with:
- RSSI
- Remaining battery %
- mAh used
- Fixed pitch/horizon sync issue
- Began producing boards with:
- Horizontal connectors (for compact installs)
- Solder pads for direct FC connection
⚙️ Version 2.0 – JULY 2025, Major Hardware + Radar + REFLEX HUD
- Introduced new hardware design:
- Removed button module
- Added LoRa port
- Integrated support for HUD + radar inspired by Ace Combat games
- New Features:
- Support for 3 or 4 screens
- Real-time radar module with LoRa-based pilot tracking
- Assignable screen roles (PFD, MFD, HUD, Radar)
- Individual screen rotation
- Added fuel gauge layout for more scale realism
🛩️ Radar System Features
- Adjustable radar range
- Real-time display of:
- LoRa link status
- Satellite count
- Radar distance
- Vehicle & Pilot IDs
- Menu controls for:
- Max target range
- Sim spawn rate / max sim count
- Friendly/enemy team assignment
- Display modes: Friendly / Hostile / Both / Off
- Pursuit tuning (aggressiveness, chase speed, turn rate, loop agility, etc.)
- Target labels: Show ID, distance, altitude, etc.
- “Eject Factor” for sim drop-off behavior
Note: This radar system is in active beta and evolving.
✨ Version 2.1 – JULY 2025, HUD Improvement + LED BOOST PROTOTYPE + FIELD TEST
- Introduced shiftable reflex HUD layout for 1.14″ displays
- HUD includes:
- Pitch Ladder
- Speed
- Altitude
- Heading
- Roll Indicator
- AHI (Attitude Horizon Indicator)
We designed a DIY HUD using bright LEDs, a beam splitter, and a Fresnel lens — excellent reflection at night; partial daylight performance with boosted LED brightness.