Opening the Project

The current files are saved with KiCad 10.0.5. Clone the repository and open Sisu_SSE-9.kicad_pro from KiCad's project manager. The symbol and footprint tables use project-relative paths, so no shared user library is required.

git clone https://github.com/briskspirit/Sisu_SSE-9.git
cd Sisu_SSE-9

Older KiCad releases cannot read this project's file format reliably.

BOM and Assembly

Sisu_SSE-9.csv, Sisu_SSE-9_bom_filled.csv, and Sisu_SSE-9_bom_filled.xlsx are generated from the current post-assembly Rev B2 source. The filled workbook retains supplier-review notes, but stock status is only a historical snapshot and must be checked again before ordering.

RF tuning positions intentionally have no final MPN. Their values are provisional and depend on the antenna, enclosure, assembly, and calibration. Mechanical contact footprints such as the display zebra, speaker, motor, and spring contacts remain visible in the engineering BOM but are excluded from placement output.

Manufacturing Archives

The ZIP files under Ordering/ are immutable records of data sent for previous fabrication runs. They are useful for comparison, not as the preferred source for another order. The root KiCad files include post-assembly corrections that are newer than the Rev B2 archive.

Before fabrication:

1. Read ERRATA.md.
2. Run ERC and DRC with KiCad 10.0.5.
3. Re-export Gerbers, drill files, position files, and the BOM from the root project.
4. Review every fabrication output independently, especially RF footprints, plated holes, and DNP status.

Current Status

• Rev A established the mechanical and electrical baseline.
• Rev B1 used the u-blox LARA-R6 modem.
• Rev B2 moved to the Telit LE910C1-WWX and is under hardware bring-up.
• Rev C is planned to address the published errata and power-management findings.

Firmware is developed in the sibling Sisu_DCP-3 project and will be linked here when its public repository is available.

Contributing

Issue reports, measurements, footprint corrections, and tested design changes are welcome. Please identify the board revision, modem variant, battery chemistry, and the exact test conditions. Hardware changes should include ERC and DRC results plus a review of generated fabrication data.

License

Original project material is released under the Unlicense. Third-party material remains the property of its respective owners; see THIRD_PARTY_NOTICES.md.

Acknowledgements

• KiCad and its library contributors
• Raspberry Pi, Telit, Texas Instruments, Nuvoton, Micro Crystal, and the other component manufacturers whose documentation made this work possible
• The original Nokia 3210 engineering and industrial-design teams

Nokia is a trademark of Nokia Corporation. This is an independent hobby project and is not affiliated with or endorsed by Nokia, HMD Global, Telit, Raspberry Pi, or any component manufacturer.