Helix 3.0.3

Helix 3.0.3

Helix 3.0.3 focuses on camera performance and several AD5X fixes.

What's Changed

Smoother Android Camera

• Reworked the U1 camera path to use the printer's H.264 stream on Android.
• Greatly reduced camera bandwidth compared to the previous high-bandwidth JPEG/MJPEG path.
• Full-speed video without the large network backlog that could cause printer controls and other requests to lag.
• Snapshot/MJPEG fallback remains available when H.264 cannot be used.

AD5X Fixes

• Fixed the AD5X printer screen freezing while using Helix.
• Fixed AD5X filament slots failing to load when connected over Tailscale.

Other Fixes

• Fixed duplicate open-source license handling introduced during the 3.0.3 merge.
• Updated camera regression tests for the new H.264 streaming implementation.
• Removed obsolete Goldie captures and scripts.

Thanks for using Helix.

Helix 3.0.2 — Open-source compliance

What changed

• Added complete Bespok3d and HelixScreen copyright, license, and source notices.
• Bundled Helix's AGPL license, the HelixScreen GPL license, attribution, and third-party notices directly inside the APK.
• Added Settings → Backup & About → Open-source licenses with an on-device credit summary and access to the full notices.
• No printer-control or slicing behavior changed in this compliance release.

Build: 78cd4ff

Open-source credits and source

• Bespok3d daemon 0.12.24 and Snapmaker U1 jinni 0.1.10, licensed AGPL-3.0-or-later. Copyright (C) 2026 unlucio and the Bespok3d contributors. Source: daemon and adapters.
• HelixScreen v0.99.112, licensed GPL-3.0-or-later. Copyright (C) 2025-2026 356C LLC and contributors.

Helix is not affiliated with or endorsed by Bespok3d, 356C LLC, or the HelixScreen contributors.

HelixScreen corresponding source directions

The APK contains a HelixScreen build from commit 59e2b0b3ffde67666b89db80845057fa1b0b9a5b. Its complete pinned upstream source is attached below as helixscreen-v0.99.112-source-59e2b0b.tar.gz and is also available at the exact upstream commit. Helix's launcher, deployment metadata, and Docker build instructions are in the v3.0.2 packaging source. The full GPL-3.0 license applies to that component.

Helix 3.0.1 — Multi-printer control

What’s changed

• Added Bambu P1S and FlashForge AD5X connectivity, discovery, telemetry, material handling, camera control, uploads, printing, calibration, HMS reporting, and skip-object support.
• Added printer-specific slicing profiles, build plates, 3MF settings, preprocessing, and Klipper compatibility.
• Added Snapmaker U1 AI monitoring with sensitivity controls.
• Fixed slow or crashing printer switches and restored smooth continuous U1 camera playback.
• Added Bespok3d enrollment, HelixScreen management, screen mirroring, UI refinements, and expanded test coverage.

Build: 9cfdf90

Open-source credits and source

Helix 3.0.1 redistributes these open-source components:

• Bespok3d daemon 0.12.24 and Snapmaker U1 jinni 0.1.10, licensed AGPL-3.0-or-later. Copyright (C) 2026 unlucio and the Bespok3d contributors. Source: daemon and adapters.
• HelixScreen v0.99.112, licensed GPL-3.0-or-later. Copyright (C) 2025-2026 356C LLC and contributors.

Helix is not affiliated with or endorsed by Bespok3d, 356C LLC, or the HelixScreen contributors.

HelixScreen corresponding source directions

The APK contains a HelixScreen build from commit 59e2b0b3ffde67666b89db80845057fa1b0b9a5b. Its complete pinned upstream source is attached below as helixscreen-v0.99.112-source-59e2b0b.tar.gz and is also available at the exact upstream commit. Helix's launcher, deployment metadata, and Docker build instructions are in the v3.0.1 packaging source. The full GPL-3.0 license applies to that component.

Helix 3.0.0 — Major visual refresh

Major visual refresh based on popular demand, plus reliability improvements and bug fixes
throughout Helix.

Helix 1.2.8

Re-slice on Print

Pick any loaded material in the Prepare&Slice print dialog — Helix re-slices into it (with that material's temps/profile) before sending. Single-material swap, multi-color→single collapse, and per-color remap. Re-slice preserves your supports/brim/infill/ironing settings.

Printer stale-screen fix

Helix no longer restarts Moonraker on every launch or FCM registration (idempotent config writes on app + relay). Combined with the printer-side status_objects fix, the touchscreen stays live instead of freezing on a ghost print.

Multi-color

Per-object extruder is now honored (via model_settings.config); preview and printed colors are correct.

Plate extraction (large files)

Streaming rewrite fixes the OOM on big multi-plate 3MFs; external part-file meshes are inlined; generated extruder config keeps multi-color intact.

Translations

Full coverage for Spanish, German, French, Chinese, and Polish.

Helix 1.2.7

What's new

• Fixed multi-plate 3MF preview failures — selecting a plate no longer errors with "Native engine could not load this model". The chosen plate is now repacked into a minimal core-spec 3MF the slicer engine accepts.
• Fixed OOM/crashes on large models — extraction now streams via an XML pull parser, so even big files (88MB Monkey / 57MB Stitch) load without running out of memory.
• External part-file meshes supported — models storing geometry in 3D/Objects/object_N.model (referenced by component groups) are now inlined and flattened correctly.
• New Prepare & Slice progress bar — real byte-counted percentage, phase labels, and status messages while your plate is being prepared.
• Instant plate selection — tapping a plate card is immediate; extraction now runs when you press Prepare & Slice.

Version

1.2.6 → 1.2.7

Helix 1.2.6

What's changed

• Filament selector overhaul: replaced the 9-item flat material list with the full firmware catalog — 42 base polymers (PLA, PETG, PEEK, PEKK, PA, PC…) + 16 subtypes (CF, GF, Silk, Matte, HF, 95A…). Compound materials like PLA-CF are now MAIN=PLA + SUB=CF, matching how the firmware actually works.
• Smart subtype filtering: picking a material now shows only valid subtypes for it (TPU gets 95A, PLA gets Silk/Matte/Wood, soluble support gets Basic only).
• Sliding picker dialogs: material/subtype/brand dropdowns now open a scrollable bottom sheet instead of dumping everything on screen.
• Slicer temp safety: picking PEEK/PEKK/PEI now slices at the correct ~400°C instead of silently falling back to 220°C PLA temps. Every material uses its real firmware temp range.
• Faster reconnect: fixed zombie-WebSocket bug where the printer connection hung for 30-60s after backgrounding the app — now forces a fresh reconnect when returning after 3+ seconds.
• 71 regression tests (up from ~30) covering filament command building, material catalog conformance, and temp resolution.

Build: 13e5da6

Helix 1.2.5

What’s changed

• Improved printer GUI touch responsiveness
• Fixed stale print progress and remaining-time estimates
• Fixed update version comparison and APK installation handling
• Added Play Store and GitHub-specific update channels
• Improved print notifications and notification controls
• Added safer adaptive bed-mesh bounds handling
• General camera, slicer, filament, and connection fixes

Build: 6b58f21

Helix 1.2.4 - Filament Profiles and Printer Sync

Helix 1.2.4

• Added PAXX filament profiles with material, temperature, flow, and pressure settings.
• Improved filament brand selection and printer synchronization.
• Fixed filament selections reverting to Generic.
• Improved printer status and notification handling.
• Added updates to the in-app changelog.
• Improved slicer and printer controls.

The APK is available for direct Android installation. The AAB is used for Google Play.

If the Google Play update is not visible immediately, wait a little and check again while the update
finishes publishing.

Helix 1.2.2

Helix 1.2.2 adds Firebase push notifications for PAXX firmware printers. Users can receive print completion and printer error alerts when Helix is closed.