We are big fans of highly accurate GNSS RTK modules - so much so we've designed and made a series of boards that utilize them. In fact, one of the biggest fans of these modules is our very own Nathan Seidle. Recently, Nate assembled a few of the projects he has been working on while in quarantine, and turned them into tutorials so you can build them too!
Setting up a Rover Base RTK System
October 14, 2020
This tutorial will walk you through setting up a base and rover so your rover can have the same ~14 mm accuracy surveyors use! This can be useful for all sorts of projects including agriculture, drones, mapping, and even some extreme geocaching.
We’ve been using the ZED-F9P from u-blox for a few years now. While it is a bit pricey (~$200) it is a fraction of the cost of other RTK systems, which range from $3,000 to $20,000 or more! The ZED-F9P is as impressively powerful as it is configurable. We will also be making liberal use of u-center from u-blox - don’t worry, we’ve got a tutorial for that. Unfortunately u-center is currently only for Windows. For the more adventurous, SparkFun has created a popular and powerful u-blox Arduino library that can do everything u-center can from an Arduino.
How to Build a DIY GNSS Reference Station
October 15, 2020
GNSS Real Time Kinematics (RTK) is amazing, but one of the major confusion points is getting access to correction data. We’ve covered how to get publicly accessible RTCM correction data in previous tutorials, but it can be spotty. We’ve discussed how to set up your own temporary base to send RTCM correction data over a telemetry radio link, but what if you are a kilometer or more from your base? This tutorial will focus on setting up your own fixed antenna on your roof or other stationary structure, and configuring a mini-computer to serve that data over the Internet, where it can be accessed by WiFi or, more commonly, from a cellular phone or modem. Consider this the sequel to Setting up a Rover Base RTK System.
Learn how to generate your own GNSS correction data and push it to the Internet, all for free (or the cost of a dedicated mini-PC if you need it)! You’ll be your own music streaming service! Your rover will be able to listen to that correction data using a cell phone connection.
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