For the auto-steer setup he has bolted the GPS receiver’s antenna on a bracket mounted off the tractor’s front linkage. This apparently provides a faster heading correction than mounting on ...

Farmers using GPS 'auto-steer' tractors are becoming increasingly responsible for power outages amid a rise in collisions with pylons and overhead lines.

In compass steering mode, a Pololu IMU locks in the heading to steer (HTS). GPS mode uses a predetermined waypoint, and sets the course to steer (CTS) to the same bearing as the waypoint.