A cheap robot dog should use a static crawl gait, 12 servos and a light printed frame.
The cheapest robot dog that walks reliably is not dynamic or fast. It is a 12-servo quadruped using a static crawl gait where three feet stay planted while one moves. That keeps balance manageable.
Spend money on servos before cosmetics. Weak plastic servos cause most cheap quadruped failures.
Gait control and wireless tuning
Controls 12 servos cleanly
Hip and knee joints
Servo power
Light body and legs
Body tilt feedback
Cheaper but less capable leg geometry.
Upgrade hip servos and battery current first.
Treat the generated output as a prototype plan, not a certified product. Body-adjacent, high-voltage, optical-energy and mobility builds need qualified review before real-world use.
No. A budget servo dog should crawl slowly.
Twelve is the practical baseline for a dog-like quadruped.
The gait, center of gravity or servo torque is usually wrong.
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