1lb Battle Bot

This combat robot project combines extreme weight optimization with maximum destructive capability. Every gram counts when designing within a 1lb weight limit, requiring careful material selection, strategic weight distribution, and innovative manufacturing techniques.

The robot features an active weapon system capable of delivering significant kinetic energy while maintaining structural integrity under intense combat collisions. The design underwent multiple iterations based on arena testing and competition performance.

The chassis uses a combination of carbon fiber plates and titanium fasteners for optimal strength-to-weight ratio. The weapon system centers on a high-speed spinning disc powered by a brushless outrunner motor. Finite element analysis was performed to identify stress concentration points and reinforce critical areas.

All components were designed with combat durability in mind, including shock absorption for the weapon motor mounts and redundant structural paths. The robot features a wedge geometry for defensive positioning and weapon protection.

The electrical system uses a miniature brushless ESC rated for burst currents up to 40A. Power comes from a 3S LiPo battery with 45C discharge rating, providing the burst power needed for weapon spin-up. An Arduino Nano handles radio receiver input and ESC control.

Protection circuitry includes battery monitoring and current limiting. The radio system operates on 2.4GHz with failsafe programming to disable all motors if signal is lost.

The battle bot competed in multiple tournaments, achieving several victories through effective weapon design and strategic driving. The robot survived numerous high-impact collisions, validating the structural design. Battery life sustained 3-minute matches with continuous operation.

Key learnings include the importance of armor geometry and the effectiveness of active weapons versus wedge-based defenses.