Wanting to make a mowbot and it looks like prices for GPS RTK have come down to levels to make this doable for me. But I know very little about RC/drone controllers. Anyone in the group doing something similar? Are there any local GPS reference stations that are open/public so I don’t have to make one?
Will try to get to a meeting. Maybe in March…
Jim
Jim,
So i have been messing with the Ardupilot quite a bit and would like to get involved with this. I too am trying to get a group together that works in the Ardupilot / Rover realm. I know some stuff but I also know that I dont’ know alot LOL… Can I join your team?
Sure, but it is just me at this time. I have been looking at the uBlox F9P GPS and RTKLIB for the RTK portion. Have a bit of experience with the raspberry pi board and linux. Sparkfun has a board with the F9P for a little over $200. There is a reference station in north St. Louis so I only need one of the GPS receivers.
I am wondering if anyone has any experience with “Radio Direction Finding” (RDF)
If you could build a directional antenna, and have a receiver that could be tuned to local broadcast AM radio, such as KMOX and another strong station in Saint Louis, then maybe you could triangulate and find your location.
You would need to know the location of the transmitting antennas.
Maybe GPS costs less now, I don’t know…
It’s hard to imagine RDF could beat gps on cost or ease of use. Completely uneducated guess though.
RTK is a lot more expensive than regular gps but it’s got amazing accuracy.
When I started building my bot, MANY years ago, GPS was expensive. I thought about RDF because I thought it would be easier to build a directional antenna, and an AM radio. Also, I know that I can pick up the KMOX signal inside my house. I never got around to trying it. )-: