SOLAR-HOP v2.2.1 — free, open reference design (Sanctir LLC, October 2026)

A small drone that flies a pre-loaded route with no radio link, lands to recharge
from its own solar panels, continues, and returns home for pickup and data download.

Contents
  Solar-Hop_Explainer.docx              Start here. Plain-language overview of both designs.
  parts-lists/
    Design-A_Quadcopter_BOM.xlsx        Quadcopter: parts, origins, costs, energy budget, compliance
    Design-B_Fixed-Wing-VTOL_BOM.xlsx   Fixed-wing VTOL (long range): same structure
    Variant_Hexacopter-Inspection_BOM.xlsx  Hexacopter variant for power-line inspection
  software/
    solar_hop.lua                       ArduCopter 4.5 flight script (quadcopter). Passed SITL.
    companion_agent.py                  Companion computer: shutdown, perch selection, encryption
    README.md                           Wiring, parameters, mission rules, test sequence
    LICENSE                             Apache 2.0
  LICENSE.md                            Licence terms (CC BY 4.0 / Apache 2.0) and export note

Status: quadcopter software validated in simulation; fixed-wing software not yet written;
no hardware flown. Follow software/README.md before any flight.

Contact: Collin B. George, CISSP — cgeorge@sanctir.com — sanctir.com
