A live 3D home screen for the Haval H6 head unit (Snapdragon SA8155, 1920x720 panel, Android 9 WebView). It draws your car, its doors, lights and wheels, and puts climate, energy, trips and driving controls next to it, all fed in real time from the vehicle bus.
It is part of the Impulse ecosystem: Impulse reads and writes the vehicle bus, Impulse Launcher draws it.
Not affiliated with or endorsed by GWM / Haval. Credits and trademarks: THIRD_PARTY.md. The screenshots below come from an emulator with simulated data (the app marks it DEMO).
- The HEV, PHEV and GT bodies, with doors, lights and wheels that follow the car.
- Wheels turn with a motion-blur sprite tuned to the panel's frame rate, and a catalogue of more than twenty rims to try on.
- Paint colour, window tint and ride height; day and night lighting.
- X-ray view: the body turns into a ghost and the drivetrain shows through, with energy flowing to the wheels.
One 6x2 grid beside the car, arranged in the Layout manager. The car takes the columns the widgets leave free. Eleven widget types, in sizes from 1x1 to 3x2: media, climate, consumption, range, power flow, energy graphs, driving, vehicle status, clock, turn-by-turn navigation and a vehicle/theme profile. Dark and light themes.
Tap a widget to open it as a larger popup.
Dual-zone temperature, fan speed, seat heating and ventilation, AUTO, A/C, SYNC and defrost, plus cabin air quality, a four-day weather forecast and comfort intensity. With Impulse installed, Impulse Launcher can show its own panel when you press the car's climate controls, instead of the stock one.
- Range: battery and fuel range side by side, with a forecast checked against what the battery really did on each charge cycle.
- Power flow: a top-down drivetrain with live power, battery level and the last 60 s.
- Consumption: now, per trip and history, with a map and the altitude for each trip, recorded on the head unit.
Drive mode, energy mode, regeneration, steering feel, one-pedal and ESP from one popup; now-playing media; a workspace for apps and phone projection (Android Auto and CarPlay); a clock; wallpaper presets.
The head unit's WebView is the constraint, not the GPU, so the viewer renders on demand and keeps vehicle-bus signals away from React. The engineering notes record every number it is built on, measured on the car, including the ones that proved earlier assumptions wrong.
Prerequisite: Impulse must be installed on the head unit. Impulse Launcher gets its vehicle data from it, so install Impulse first.
From Impulse (recommended). Open Impulse -> Instalar Apps -> Impulse Launcher. Impulse downloads the latest signed release and offers to set it up.
By hand. Download impulse-home.apk from the Releases page, then:
adb push impulse-home.apk /data/local/tmp/viewer.apk
adb shell pm install -r -i com.autolink.installer /data/local/tmp/viewer.apkadb install stalls on this unit, and the -i com.autolink.installer identity is
required: the head unit refuses a plain install of this package.
Releases are signed with one key; see SECURITY.md to verify it.
On first launch Android asks for location. It is optional and everything else works without it. Granting it enables:
- the weather forecast: the position is rounded to about 1 km before it goes to Open-Meteo;
- place names for trips and the navigation card: the precise position goes to OpenStreetMap's Nominatim service;
- recording the route and altitude of each trip, which stays on the head unit.
Trip maps also download OpenStreetMap tiles. The details are in signals-and-limits.
| Path | What |
|---|---|
index.html, support.js |
the viewer (React + three.js, no bundler) |
app/ |
Android shell: WebView host, vehicle-bus bridges, trip recorder |
vendor/ |
vendored runtime libraries |
scripts/ |
build tooling for models and textures, device harnesses, tests |
assets/ |
fetched, not tracked (see assets.lock.json) |
docs/ |
engineering notes measured on the car, architecture, feature contracts, vehicle data (index) |
docs/AGENTS.md |
guide and ground rules for AI agents working in the repository |
- Code: AGPL-3.0.
- Assets (3D models, images, video): LICENSE-ASSETS. They are not open source; official builds may be used, the files may not be reused.
- Third-party: THIRD_PARTY.md.
- Weather data by Open-Meteo.com (CC BY 4.0). Seat icon: "heated seat" by Thuy Nguyen from the Noun Project. Icons: Material Design Icons (Apache-2.0).