The most surprising element of the maker's project is the severe difficulty loose gravel presented to the robot's balancing systems. This small, four-legged robot dog, named Quaddle, was set up to walk on a gravel surface. The creator's intention was to utilize an IMU that combines a gyroscope and an accelerometer to correct for uneven ground in real time.
The robot, which is manufactured by Petoi, features a blue plastic torso and articulated limbs constructed from white material. Its feet are tipped with red accents, and a screen displays stylized green digital eyes. Servo motors power the limbs, allowing the robot to attempt movements such as lifting its front legs while remaining supported by its rear limbs. The maker’s efforts show the robot shifting its weight to counter loose stones while striving to maintain an upright posture.
Visual displays on the robot show graphic representations of the IMU responding to balance on tilt and recovering from falls. However, the delicate balance was quickly challenged. The robot started wobbling as the IMU attempted to correct for the erratic terrain. Loose gravel proved exceptionally harsh for the quadruped's stability, resulting in the robot falling sideways and ending up overturned with its legs still moving.
This testing reveals a key open question regarding the system's capability. The maker is now asking which different types of terrains Quaddle should attempt next, suggesting the current rocky environment may have been too difficult for the balancing algorithm.