---
title: "SparkFun RTK Reference Station"
url: "https://maker.wiznet.io/jaden/resellers/sparkfun-rtk-reference-station/"
markdown_url: "https://maker.wiznet.io/jaden/resellers/sparkfun-rtk-reference-station/md"
type: "VAR: Value-Added Reseller Products"
author: "sparkfun"
author_url: "https://www.sparkfun.com/products/22429"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "sparkfun"
original_url: "https://www.sparkfun.com/products/22429"
published: "2024-03-04"
language: "en"
hardware: ["WIZnet W5500"]
likes: 0
views: 904
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# SparkFun RTK Reference Station

> RTK Reference Station

Original author: sparkfun (source: https://www.sparkfun.com/products/22429)

## Components

- **WIZnet W5500** x 1 ([docs](https://docs.wiznet.io/Product/Chip/Ethernet/W5500))

WIZnet parts: W5500 ([Datasheet](https://docs.wiznet.io/Product/Chip/Ethernet/W5500/datasheet?utm_source=maker&utm_medium=project&utm_campaign=w5500), [product hub](https://maker.wiznet.io/products/w5500/))

## Article

![](https://maker.wiznet.io/upload/ckeditor5/672720325%5F1709584941%2Epng)

- ESP32-WROOM processor
  - Reverse Polarity (RP) SMA WiFi / BT antenna connection

- u-blox ZED-F9P multi-band GNSS module
  - Connected via SPI for high-speed data transfer

- microSD socket
  - Connected via 4-bit SDIO for high speed read and write

- WIZnet W5500 Ethernet interface
  - 10/100 Mbps with auto-negotiate

- ATECC608A Crypto Co-processor
  - Future upgrade; not currently supported by the RTK firmware

- OLED display

- SMA Time Pulse output
  - 3.3V default
  - Configurable for 5V
  - 100kHz maximum usable output
  - 1Hz output in NTP mode

- SMA GNSS antenna connection
  - 5V power for an active antenna
  - Short-circuit detection
  - Open-circuit detection

- Custom extruded aluminum case with machined end panels
  - IP42 ingress protection
  - A weatherproof enclosure is required for outdoor use

- Matte-effect front and rear stickers

- Power options:
  - ESP32 USB-C connector
  - u-blox GNSS USB-C connector
  - Rear USB-C power connector
  - Power-over-Ethernet (36V - 57V)
  - 5V I/O screw terminal (5.5V Maximum)

---

Source: https://maker.wiznet.io/jaden/resellers/sparkfun-rtk-reference-station/