Android: HELM, MAP & Launcher
44.2 MBHELM 206, MAP 110, Launcher 31 and shared modules with OpenCPN sources. No chart data, OEM libraries or private signing. Source checks passed; no new APK build.
Download source package ↓FROM THE IDEA TO YOUR WORKBENCH
Look inside. Build further.
Downloads are coherent source snapshots. They identify what is included, which dependencies you need and what has actually been tested.
HOW TO GET STARTED
- Choose one project.
Start with the component you need. Read its current state and open items first.
- Check your setup.
Device model, connections, power and tools need to match your boat.
- Work from bench to boat.
Build the sources, run targeted checks, then test the physical assembly and installation. Each package identifies missing measurements.
- Share what you learn.
A better mount, a supplier or a clearer wiring drawing can help as much as new code.
SOURCE PACKAGES / 1 NOVEMBER 2026
Pi gateway
0.6 MBShared interface for instruments, audio, sonar and routes. Original runtime source, sample configuration and tests. Connected services remain separate dependencies.
Download source package ↓GPS live map
0.1 MBSmall read-only Python/Leaflet application for gateway GPS sources. Includes synthetic tests and installation, without actual positions or credentials.
Download source package ↓Spotify Connect receiver
0.2 MBRust receiver with state synchronisation and original librespot adaptations. Existing MIT licences are retained. Spotify access and audio hardware are separate requirements.
Download source package ↓CamillaDSP extensions
0.1 MBOriginal sound and equalizer extensions bound to an upstream version. Ten core/parity tests passed; no new complete Pi/audio operating test.
Download source package ↓Sonard / echo processing
0.4 MBOriginal host sources and required original runtime components with a portable wheel build. Current Pico firmware is a separate package; physical calibration profiles are not included.
Download source package ↓Pico acquisition & transmit control
0.1 MBOriginal C/PIO firmware including clip experiment revision 0.7.13. 25 offline tests passed; flashing, a new ARM build and acoustic testing were not performed for this package.
Download source package ↓Chart converter · portable core
1.0 MBOriginal decoders, intermediate representation, supported RX5/Navionics writer paths and synthetic tests. OEM probes, third-party runtimes and charts remain separate. Not a finished plotter product.
Download source package ↓Venterior enclosure V15
0.1 MBParametric design, placement and wiring sources. A portable adapter can generate the nominal model. Physical fit, materials and active electronics still require checks.
Download source package ↓Yamaha trim adapter R3
0.1 MBDesign, connection contract and AVR firmware with original reference bodies. 15 host firmware cases passed. Analogue stability and actual Yamaha operation remain open.
Download source package ↓Pi box R5
7.0 MBSources with 200 required original reference bodies, STEP and connection data. Two individual print recipes were generated offline; the complete assembly was not recomputed. Known print and functional faults remain documented.
Download source package ↓75 EUROS IS THE START
The display is inexpensive.
The system deserves an honest breakdown.
A €75 display makes getting started interesting. An installed boat system includes more. We show its components rather than counting unknown costs as zero. Updated: 1 November 2026.
| Component | What it includes | Evidenced price status |
|---|---|---|
| Display | One Lumina/K706; €75 according to my own purchase report. Count a second device separately. | €75 · owner report |
| Pi and storage | Raspberry Pi 5, 8 GB; cooling enclosure and 64 GB microSD are documented in the inventory. | Purchase prices not recorded |
| Power | DC converters, fuses, wiring and power for the chosen devices. | Setup-dependent · open |
| Audio | USB 5.1 sound card documented; amplifier, speakers and acoustic setup depend on the boat. | No evidenced package price |
| Sonar and sensors | Examined fishfinder, Pico, adapters and sensors for the chosen configuration. | Purchase prices not recorded |
| Enclosures and fabrication | Count print material, screws, boards, connectors, printing and soldering separately. | Material + fabrication open |
| Installation and shipping | Installation, cable routing, local sourcing, shipping and possible import costs. | Country- and boat-dependent |
Inventory records confirm core components but contain no reliable purchase-price fields for them. Labour, shipping and imports remain open. We therefore give neither a misleading total nor a blanket comparison with a finished plotter.
Sourcing in South Africa: specific historical examples
Recorded inventory includes a four-way RCA connector at R24.38, a fuse holder at R18.57 and an HW64 converter at R72.10, each excluding VAT. These historical individual values were checked on 1 November; that does not confirm purchase date, current availability or shipping. They do not automatically all belong in the same variant.
Venterior V15-2 print preparation estimates around 338 g of PETG including supports and a test piece. This is a slicer estimate, not measured consumption or a fabrication price. Alternatives must match function, dimensions and connections. Local suppliers and assembled modules are particularly useful contributions.
Inspect cost and source referencesPARTS & FABRICATION
A shopping basket is not yet a build.
In South Africa, sourcing is often harder than the code. We collect exact parts, alternatives and local fabrication options. Stock, shipping and assembly belong in an honest cost comparison.
Published sources contain specific variants and existing connection and test data. Functionally suitable alternatives and local fabrication help in other countries. Not every variant has already been physically assembled and tested.