OSS-RTK – Open Survey System RTK

OSS Hardware

Bill of Materials (BOM) and fabrication files for each building block of the OSS-RTK (Open Survey System RTK).

Component	Role	BOM
Rover	Portable GNSS RTK receiver (GNSS + BLE/SPP bridge)	rover/BOM.md
Transmitter	LTE/LoRa Gateway — NTRIP client → LoRa 433 MHz uplink	transmitter/BOM.md
Receiver	LoRa/Wi‑Fi Gateway — LoRa 433 MHz → local NTRIP caster	receiver/BOM.md

Notes on the BOMs

• Rover is a custom PCB. Its BOM is derived directly from the KiCad schematic in rover/kicad/rover.kicad_sch and is the authoritative parts list. A machine-readable copy lives in rover/bom.csv.
• Transmitter and Receiver are built around commodity ESP32 + SX1276 LoRa development boards (no custom PCB yet), so their BOMs list ready-made modules and the few external parts that complete the build.
• Prices are rough indications (USD) for low-volume hobby quantities and will vary by region and supplier. Treat them as planning estimates, not quotes.
• Region-aware radio note: 433 MHz operation must comply with local regulations (e.g. 433/869 MHz in the EU). Pick antennas/power accordingly.

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