A custom mainboard houses the Pi 4 and Pico, an ArduSimple RTK GPS module (giving a reported navigational accuracy of 1 cm,) as well as three BLDC motor drivers for the wheels and rotor.

[Colin] and [Fergus] have been working with GPS for years now, and like most builders of really cool things, they’re often limited by the precision of off-the-shelf GPS units. While a GPS ...

We solved that problem with the Venus Laser IMU RTK. These three combined technologies into a handy ... precisely the distance between the receiver and the object. The laser module embedded into the ...