Comments: SparkFun GPS-RTK Dead Reckoning ZED-F9R Hookup Guide
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Has anyone hooked up and use the wheel ticks and direction?
The tutorial said that "for advanced users", the pins for wheel ticks and directions can be connected. Does that mean that I can still use this module without connecting those pins, which means that the module can run in UDR mode?
Hi! You are correct! As long as the GNSS module is calibrated, you can use the it to run in untethered dead reckoning (UDR) mode without the wheel ticks and direction pins connected to your vehicle. It will just be in a "degraded HPS (high precision sensor)" state as briefly explained in the integration manual. Connecting the wheel tick and direction pins just makes your location more accurate overall and adds the extra layer of precision. I checked in with the engineer to confirm and he agrees. It's like adding a cherry on top of your dessert. =)
I'm new to Sparkfun and small electronics hardware projects. My goal is to record a log of Lat/Long and timestamps to create RTK control points (via ZED-F9R pHAT assembly with PiJuice for mobile power) for my orthophoto drone projects. The hardware is duly assembled, where can I find more resources to configure my Raspberry Pi base station and get it operational? I'm unsure where to turn to find more information/tutorials. My efforts feel stuck right out of the gate. Thanks for any insight!
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That being said, you can reference the tutorials from the Connecting the GPS RTK to a Correction Source section. Additionally, you will need to verify that the Python package is compatible with what you are trying to do.
It is mentioned that speeds exceeding 30km/hr are necessary for calibration. Is this always the case? I was planning on implementing this for a project that will be moving at slower speeds, but still needs high accuracy.
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That being said, I believe the manufacture specified that it is.