Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 15 | Antwieght Battle Bot |
Carlos Carretero Dany Rodriguez Troy Edwards |
John Li | design_document1.pdf final_paper1.pdf grading_sheet1.pdf presentation1.pdf proposal1.pdf video |
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| 3D-PRINTED BATTLE BOT Group members: Daniel Rodriguez (drodr25) Carlos Carretero (ccarr27) Troy Edwards (troyre2) PROBLEM Our project revolves around Professor Gruev’s Battle Bot Competition. This competition has several requirements as well as limitations which must be adhered to. These requirements include 3D printed construction with predetermined materials, weigh less than 2 pounds, have a PCB that is controlled through Bluetooth or wifi, fighting capabilities, and safety measures for shutting the robot down. Our goal for this project is to have a robot that is capable of competing in the competition meaning that it can be controlled and attack as desired. SOLUTION As the project entails this robot will be fighting against other robots which means that our design must revolve around having the ability to disable the opponent's threats or render their robot immobile. In order to accomplish this we will have a 3D-printed chassis made of PLA+ with an ESP32 microcontroller for motor and movement control. This Microcontroller has onboard wifi and Bluetooth allowing us to decide which is best for controlling our robot. In our design, we will use 3 motors, two for movement and one for controlling our battle element which involves a lift to try and flip our opponents over. The motors will be powered by a set of LiPo batteries as they have a high power output in comparison to their size and weight helping with the weight restrictions. The motors used for movement will also have an h bridge that allows for forward and backward movement allowing the robot to turn and have smooth movement. Voltage control circuits will also be implemented in order to account for the different voltages required for the microcontroller and the motors. SOLUTION COMPONENTS SUBSYSTEM: CHASSIS The chassis of the battle bot will be 3D printed using PLA+ material to have a strong and lightweight robot. It will house all the components including the PCB, motors, and power source. Our weapon will also be incorporated into the chassis to ensure that the lifting mechanism is sturdy enough to flip over opponents as well as enclosed enough to prevent damage to the robot. The body will be horizontal with a very low center of mass to avoid others flipping it over. The wheels and all electronic components will also be enclosed to prevent any damage there. SUBSYSTEM: COMBAT Our lift system will be integrated into the chassis as a movable ramp that is powered with a motor for raising and lowering the ramp. The ramp will most likely be made of titanium in order to keep a lightweight setup. It is located on the front of the bot allowing us to drive into our opponents while raising the ramp to try and flip over the other bot. SUBSYSTEM: POWER DISTRIBUTION Since we will be using LiPO batteries which have higher voltages of either 11.1V or 14.8V we have to design a circuit to step this power down for our lower voltage components like the microcontroller and DC motors for movement. This part of the project will also need some sort of circuit to be able to safely cut power to motors in case of an emergency as required. This type of battery is commonly used in battle bot applications which is why we are using it for our design. The battery will first be connected to a kill switch before anything else to ensure that the robot can be shut down safely. SUBSYSTEM: CONTROL The ESP32 microcontroller is a great option for our project as it has wifi and Bluetooth built in allowing us to have a way to control our robot. We can either use the BLE protocol to talk to the microcontroller, due to low power consumption and low latency, and connect an external Xbox controller or use wifi to control them using a pc keyboard. SUBSYSTEM: MOVEMENT There will be 2 Brushed DC motors that control the 2 wheels in our robot and we will be looking to use something like the L298N DC motor driver to control those. This will also require voltage convertors as previously mentioned. The wheels will probably made from some high-friction material like rubber to ensure that the robot does not lose traction. The ESP32 has various GPIO ports that will allow us to control the motor drivers. For the motor for the ramp we can use a servo motor in order for precision control since we don’t need more than a 90-degree range of motion. CRITERION FOR SUCCESS Our project would be successful if the robot could move around using inputs given by the user externally. Also if the attack mechanisms had movement is the range that we wanted. We also want to ensure that the chassis has enough rigidity to handle the forces from the motors. It should be safe to power on and off. The robot should also be effective at immobilizing other robots. |
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