Built a small outdoor test robot with differential drive. Mounted ultrasonic sensors for basic obstacle detection.
Small outdoor robot for lawn-scale navigation using ultrasonic sensors and a perimeter-wire guidance system with 7kHz inductive detection for reliable boundary tracking.
Built a small outdoor test robot with differential drive. Mounted ultrasonic sensors for basic obstacle detection.
Tuned sensor placement and implemented simple filtering to get reliable readings on grass and uneven ground, reducing false triggers from ground echoes.
Added perimeter-wire guidance: buried 7kHz loop with receiver coil and basic amplification stage to detect the magnetic field near the boundary.
Implemented navigation logic that keeps the robot inside the loop and slows/stops when perimeter signal weakens. Verified stable behavior in repeated boundary runs.
Reliable outdoor navigation within perimeter boundaries with obstacle avoidance.
Test in enclosed area first. Ensure emergency stop is accessible.