Tutorialintermediate

TinkerRTK WiFi NTRIP Client

Arduino sketches for connecting a TinkerNav board to an NTRIP caster over WiFi, enabling single-board RTK rover operation using publicly available or subscription-based correction data streams.

Visit Project
Boards:ESP32-S3RP2040
Firmware:Arduino
Use Cases:GPS Tracking
GitHub

Overview

This project enables a single TinkerNav board to achieve RTK-level GPS accuracy by connecting to an NTRIP (Networked Transport of RTCM via Internet Protocol) caster over WiFi. Instead of requiring a dedicated base station, the rover receives correction data from a network of reference stations via the internet.

Key Features

  • Single Board Operation: Only one TinkerNav needed (no dedicated base station required)
  • Internet-Based Corrections: Connects to NTRIP casters for RTCM correction streams
  • WiFi Connectivity: Uses the built-in ESP32-S3 WiFi to connect to any available network
  • Cost Effective: Leverage free public NTRIP services or paid subscriptions
  • Standard Protocol: Uses HTTP/1.1-based NTRIP protocol compatible with most correction services

How NTRIP Works

NTRIP uses a client-server architecture:

  • NTRIP Source: A base station generating RTCM correction data
  • NTRIP Server: Sends correction data to the caster
  • NTRIP Caster: Central server that distributes corrections to clients
  • NTRIP Client: Your TinkerNav rover, receiving and applying corrections

Hardware Required

  • 1x TinkerNav RTK GNSS base board
  • 1x GNSS antenna (multi-band L1/L2/L5)
  • WiFi network with internet access
  • USB-C cable for programming
  • NTRIP caster credentials (free or subscription-based)

Getting Started

  1. Download the WiFi NTRIP sketches from GitHub
  2. Configure your NTRIP caster URL, port, mount point, and credentials
  3. Set your WiFi network SSID and password
  4. Flash to TinkerNav via Arduino IDE
  5. Deploy outdoors with the GNSS antenna

Resources

GitHub Repository

Source code & project files