Project

# Title Team Members TA Documents Sponsor
5 ANT-WEIGHT BATTLEBOT
 wenhao Zhang
XiangYi Kong
Yuxin Zhang
 Zhuoer Zhang design_document1.pdf
proposal1.pdf
# ANT-WEIGHT BATTLEBOT

Team Members:
- Xiangyi Kong (xkong13)
- Yuxin Zhang (yuxinz11)
- Wenhao Zhang (wenhaoz5)

# Problem

Antweight (≤2 lb) combat robots must operate under strict weight, power, and control constraints while enduring repeated impacts, motor stalls, and wireless failures. It’s extremely important for the stable and fast interconnection among power delivery, wireless control, and integration between mechanical and electronic subsystems.

# Solution

We propose a 2-lb antweight battlebot with a four-wheel-drive chassis and an active front roller-and-fork weapon. All electronics are integrated on a custom PCB centered on an ESP32 microcontroller. The system is divided into four subsystems—Power, Drive, Weapon, and Control—allowing modular development and testing. Wireless PC-based control is implemented via WiFi or Bluetooth, with firmware failsafes ensuring automatic shutdown on RF link loss.

# Solution Components

## Subsystem 1 - power

Supplies stable power to motors and electronics while preventing brownouts, overcurrent damage, and unsafe operation.

Components:
- 3S LIPO Battery (11.1v battery)
- LM2596S-3.3( regulator to output 3.3v)

## Subsystem 2 - Drive

Provides reliable locomotion, turning, and pushing power during combat.

Components:
- Four DC gear motors
- L298N (motor driver)
- Four wheels mounted to a 3D-printed chassis

## Subsystem3 - Weapon

Implements the robot’s primary mechanism for engaging and controlling opponents.

Components:
- Front roller driven by a DC motor
- PWM-based motor control circuitry
- Other 3D-printed weapon structure (forks, and wedge guides)

## Subsystem4 - Control

Handles wireless communication, motion control, weapon control, and safety logic.

Components:
- ESP32 microcontroller on custom PCB
- Integrated Bluetooth radio
- Current sensor for safety monitoring
- PC-based control interface

# Criterion For Success

- Weight Compliance: Total robot mass is less than 2.0 lb.


- Wireless Control: Robot is reliably controlled from a PC via Bluetooth with Failsafe Operation.


- Mobility: Robot operates continuously for 3 minutes without power resets.


- Weapon Reliability: Weapon can be repeatedly actuated without electrical or mechanical failure.

Recovery-Monitoring Knee Brace

Dong Hyun Lee, Jong Yoon Lee, Dennis Ryu

Featured Project

Problem:

Thanks to modern technology, it is easy to encounter a wide variety of wearable fitness devices such as Fitbit and Apple Watch in the market. Such devices are designed for average consumers who wish to track their lifestyle by counting steps or measuring heartbeats. However, it is rare to find a product for the actual patients who require both the real-time monitoring of a wearable device and the hard protection of a brace.

Personally, one of our teammates ruptured his front knee ACL and received reconstruction surgery a few years ago. After ACL surgery, it is common to wear a knee brace for about two to three months for protection from outside impacts, fast recovery, and restriction of movement. For a patient who is situated in rehabilitation after surgery, knee protection is an imperative recovery stage, but is often overlooked. One cannot deny that such a brace is also cumbersome to put on in the first place.

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Solution:

Our group aims to make a wearable device for people who require a knee brace by adding a health monitoring system onto an existing knee brace. The fundamental purpose is to protect the knee, but by adding a monitoring system we want to provide data and a platform for both doctor and patients so they can easily check the current status/progress of the injury.

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Audience:

1) Average person with leg problems

2) Athletes with leg injuries

3) Elderly people with discomforts

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Equipment:

Temperature sensors : perhaps in the form of electrodes, they will be used to measure the temperature of the swelling of the knee, which will indicate if recovery is going smoothly.

Pressure sensors : they will be calibrated such that a certain threshold of force must be applied by the brace to the leg. A snug fit is required for the brace to fulfill its job.

EMG circuit : we plan on constructing an EMG circuit based on op-amps, resistors, and capacitors. This will be the circuit that is intended for doctors, as it will detect muscle movement.

Development board: our main board will transmit the data from each of the sensors to a mobile interface via. Bluetooth. The user will be notified when the pressure sensors are not tight enough. For our purposes, the battery on the development will suffice, and we will not need additional dry cells.

The data will be transmitted to a mobile system, where it would also remind the user to wear the brace if taken off. To make sure the brace has a secure enough fit, pressure sensors will be calibrated to determine accordingly. We want to emphasize the hardware circuits that will be supplemented onto the leg brace.

We want to emphasize on the hardware circuit portion this brace contains. We have tested the temperature and pressure resistors on a breadboard by soldering them to resistors, and confirmed they work as intended by checking with a multimeter.

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