Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 47 | Combative Hardened Ultra Tumbler |
Abhinav Garg Rahul Ramanathan Krishnamoorthy Shobhit Sinha |
Xiaodong Ye | proposal1.pdf |
|
| # Combative Hardened Ultra Tumbler - Battlebot ## Team Members - Abhinav Garg (ag90) - Rahul Krishnamoorthy (rahulr9) - Shobhit Sinha (ss194) --- ## Problem The antweight battlebot competition requires teams to design a combat robot under strict constraints on weight, materials, safety, and electronics. Robots must weigh under 2 lb, be constructed from approved 3D-printed plastics, and use a custom PCB integrating control and motor driving circuitry. Commercial RC receivers are not permitted. The challenge is to design a compact and reliable robot that integrates motor control, power electronics, and wireless communication while operating under high current loads and repeated mechanical impacts during combat. --- ## Solution We propose to design and build a 2 lb antweight battlebot featuring a spinning drum weapon and a fully custom electronic control system. A custom PCB will serve as the core of the robot and will house an ESP32-C3 microcontroller for computation and wireless communication. The robot will be controlled from a laptop using Bluetooth or Wi-Fi. Two motors will drive a centered two-wheel drivetrain, while a third motor will power the drum spinner weapon. Power will be supplied by a 14.8 V 4S2P LiPo battery. The system emphasizes reliable motor control, safe power management, and robustness to mechanical shock during competition. --- ## Solution Components ### Subsystem 1: Control and Communication System This subsystem handles wireless communication, control logic, and overall system coordination. It uses an ESP32-C3 microcontroller, Bluetooth and Wi-Fi wireless communication, and a USB interface for programming and debugging. --- ### Subsystem 2: Motor Control System This subsystem drives the drivetrain and weapon motors. It uses H-bridge motor driver circuitry controlled through PWM signals generated by the ESP32-C3 and brushless DC motors for drivetrain and weapon actuation. --- ### Subsystem 3: Power Management and Safety This subsystem distributes power and ensures safe operation of the robot. It uses a 14.8 V 4S2P LiPo battery, on-board voltage regulators for logic power, and battery voltage sensing via a resistor divider. Software-based shutdown is implemented to disable the robot on loss of wireless communication. --- ### Subsystem 4: Mechanical Structure and Weapon This subsystem provides structural support and offensive capability. It consists of a 3D-printed PLA or ABS chassis, a spinning drum weapon, and a belt-driven mechanical coupling between the weapon motor and drum. --- ### Optional Subsystem: Inertial Measurement and Weapon Optimization An optional inertial measurement unit (IMU) may be integrated to measure angular motion and vibration of the drum weapon. IMU data can be used to estimate weapon rotational behavior, detect imbalance, and inform software adjustments to improve weapon stability and reliability during operation. --- ## Criterion for Success The project will be considered successful if the robot weighs less than 2 lb and complies with all competition material restrictions, the custom PCB integrates control, motor driving, and power management circuitry, the robot can be reliably controlled from a laptop using Bluetooth or Wi-Fi, the drivetrain provides stable and responsive motion, the drum spinner weapon operates reliably without electrical failure, and the robot safely shuts down when wireless communication is lost. |
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