Dry Lettuce
Hardware
                                                                                  Pi Camera Module 3 Wide 2x for line follow and one front
                                                                                                                   facing for rescue to detect
                                                                                                                   evacuation poits and victims
                                                                                                                                                                        3D                        A cooler housing
                                                                                                                                                                                                with mounted fan for
                                                                                                                                                                                                                        Ramp to store two
                                                                                                                                                                                                                         victims, while the
We designed a PCB with some
                                                          VL53L1X Time
                                               of Flight Sensor                                                          Polulu 20mm Metal                            Printed                     the Pi and STM32      dead victim is held
                                                                                                                                                                                                                             in the claw
components being soldered in-house.
This allowed for space saving and more     2x: One primary sensor at
                                           the front, and one on the
                                                                                                                         Gear Motors                                   Parts
                                                                                                                          4x each with magnetic encoders
reliable power management systems. It       claw for verifying victim
                                                                                                                          for accurate speed and distance
                                                             capture
also reduced hardware complexities once HC-SR04
it was working. The main motivation for
                                        Ultrasonic                                                                                    OLED Display
this was gaining more experience with
circuit design and layout.                  Sensor                                                                                    Shows Pi & STM32 temperatures,
                                                                                                                                      ROS output for debugging, a
                                           Mounted on the side                                                                        status code, and turn angle
                                         and used for navigating
                                              around obstacles

                                            STM32F407                                                                                 80mm Pololu
                                                                                                                                                                             Battery holder
                                        Microcontroller                                                                               Wheels                                  which allows
                                                                                                                                      Larger wheels compared to
                                  Secondary processing unit for                                                                       previous designs to get over           removal after
                                  controlling motors, servos and                                                                                                                                                  Claw which
                                                                                                                                      speed bumps better                   removing the base
                                               illumination LEDs                                                                                                                                                  conforms to
                                                                                                                                                                                                                   ball shape
                                                                                                                         Raspberry Pi
                                                       SG90 Servos
                                                   3x: claw, claw lift and ball
                                                                                                                         AI Hat+ 2
                                                                                                                          Offloads processing of victim
                                                                                                                                                                                        Software
                                                              storage release                                             recognition machine learning                 Below is the high level             Below is a diagram of the
                                                                                                                                                                     main loop logic on the Pi.            ROS2 node connections
                                                                                                                                                            Yes
                                                                                                                                            Red Strip?            Exit loop and end
                                                                                                           Main processing                         No
                                                                                        Raspberry Pi 5     unit with 8GB of                 Silver Strip?
                                                                                                                                                            Yes
                                                                                                                                                                  Begin rescue lifecycle node
                                                                                                           RAM                    Repeat           No
                                                                                                                                                            Yes
                                                                                                                                             Obstacle?            Trigger obstacle navigation (blocking)

Team           We have been a team since 2022, with Toby, Landon and Bain doing robotics                                                           No

               since 2017, and William joining our school’s robotics program in 2021.
                                                                                                                                            Line Follow
                                                                                                                                                                                  Rescue
                                                                                                                                           Line Follow
                                                                                                                                  The robot’s algorithm
                                                                                                                                  constructs a graph-based map
                                                                                                                                  rather than simply tracking the
                                                                                                                                  largest contour. It compares
                                                                                                                                  intersections with the line
                                                                                                                                  position and links these into a
                                                                                                                                  network of connected nodes.

                                                                                                                                 Past Achievements
                                                                                                                                 Our achievements from competing at RoboCup
                                                                                                                                 Junior Australia:
                                                                                                                                    1st in the NSW state competition in 2022, 2023
                                                                                                                                    and 2025, and 2nd in 2024
                                                                                                                                    1st in the Australian National competition in 2025,
                                                                                                                                    3rd in 2022 and 2023, and 2nd in 2024