Jessi

Jessi
Jessi alt text
Year Of Creation	2017-2018
Versions
Latest Revision	Jessii
Revision Years	2018-2019
Information and Statistics
Farthest Distance	16 ft
Fastest Time	n/a
Highest Finish AutoNav	n/a
Highest Finish Design	1st

Competitions

IGVC 2018

• Results
  • Distance: 5 ft
  • Design Competition Placement: 2nd
  • AutoNav Competition Placement:

IGVC 2019

• Results
  • Distance: 16 ft
  • Design Competition Placement: 1st
  • AutoNav Competition Placement:

Versions

Jessi

Electrical Issues & Improvements

Jessi Electrical Overview

Jessii

At Competition

Though the team was well-prepared going into 2019 IGVC, several issues came up during competition. On the first day, the mbed was experiencing issues and causing the computer to brownout. The mbed was fried while attempts were being made to fix the problem. Eventually this was solved with a new mbed and a large capacitor, which prevented brownouts from happening, though the whole process of fixing the robot took up the first day of the competition. During the second day, major progress was made; the team was 4th to qualify, which was the earliest Georgia Tech has ever qualified in IGVC. Additionally, the robot had a few successful runs on the course. Most notably, the great backwards run tragedy of 2019 happened. During this run, the robot turned itself around and went BACKWARDS on the course, though it went extremely far. This ended up being (absolute-value) the second longest run achieved by any robot in the competition this year, though it didn't count towards our score since it was backwards.

Electrical Design & Improvements

For Jessii, the electrical team focused on iterating on several components of Jessi's system to improve weaknesses seen at the prior competition.

• Custom Computer and Improved Sensors
  • To improve computational capabilities and performance we upgraded our computer and other sensors
    • Intel i7-8700K 3.7GHz 6 Core Processor, Nvidia GTX 1060 GPU, 32GB RAM
      • GPU was chosen for CUDA support
      • Hotswap capability was brought using a PCB though not implemented before competition
    • Velodyne Puck VLP-16 3D LiDAR
    • YostLabs 3-Space Micro USB IMU
• E-Stop
  • E-Stop circuitry was consolidated onto E-Stop PCB
  • Relay was used instead of a transistor used in version 1.0
• Ethernet Communication Protocol
  • The logic board, the custom PCB which handles motor control switched from a virtual serial interface from MBed to a custom Ethernet communication protocol for robustness

Additional Information

Gallery

Error creating thumbnail: /usr/bin/timeout: the monitored command dumped core /var/www/mediawiki/includes/shell/limit.sh: line 101: 18448 Aborted /usr/bin/timeout $MW_WALL_CLOCK_LIMIT /bin/bash -c "$1" 3>&- Error code: 134

Error creating thumbnail: /usr/bin/timeout: the monitored command dumped core /var/www/mediawiki/includes/shell/limit.sh: line 101: 18457 Aborted /usr/bin/timeout $MW_WALL_CLOCK_LIMIT /bin/bash -c "$1" 3>&- Error code: 134

Jessii team reunites with Ford alumni

Error creating thumbnail: /usr/bin/timeout: the monitored command dumped core /var/www/mediawiki/includes/shell/limit.sh: line 101: 18512 Aborted /usr/bin/timeout $MW_WALL_CLOCK_LIMIT /bin/bash -c "$1" 3>&- Error code: 134

Jessii testing during comp at night