First Place Winners:
School: Our Lady of Lourdes Catholic High School, Guelph, ON
Robot: Personal Mobile Assistive Device
The OmniChair is 44” in diameter and 42” tall. It has been designed to assist the disabled in gaining greater degrees of mobility than those with standard electric wheelchairs. The functionality of the OmniChair is to allow the user to be able to move near the same range of motion as a non-disabled person would be able to.
3 Key Elements:
Designed for the FIRST competition, and revised to be used in a real world application. Holonomic drive and omnidirectional wheels allow for flexibility when in motion. Control system efficiently does calculations and motor control outputs, and with the added safety features, it gives the user a smooth and safe ride.
With six wheels that have perpendicular rollers, our robot is capable of moving in any direction and rotating at the same time. Each wheel is on a separate motor, controlled by six electronic speed controllers.
The OmniChair combines the Arduino and the Raspberry Pie in order to create a compact, responsive control system. The Raspy Pi, being a miniature computer, continuously runs a Python script to capture the input from the controllers, and do inverse kinematics calculations to translate controller input into individual motor powers. Then, using the reliable method of serial communication, the motor values are sent to the Arduino, which in turn drives the motors with their respective powers.
The OmniChair’s SeatLok is a reliable system to ensure that if the Omni chair come to an abrupt stop, or take part in a collision the user will remain in the omni chair. A parking brake allows the user to safely park, hands free. Acceleration control gives the user a smooth riding experience, slowly increasing speed limits risk of injury. The Anti-lock Braking System allows for a safe and effective emergency stopping measure should the need arise on slippery or uncertain terrain. SpeedChange allows the user to easily modify their top speed.
Second Place Winners:
Team: Roboticus Asimovus
School: Ecole Secondaire Jeunes sans Frontieres, Brampton, ON
Robot: Automatic Seed Planter
Our S.I.F. was born from an Earthway brand seed planting machine. We removed the front wheel and adapted a two wheeled cross member in order to provide drive and directionality. Seed dispensing is controlled by a motor that is programmed to dispense seeds in relation to the speed that the planter travels, thereby maintaining proper plant spacing. Forward movement is controlled by an Arduino microcontroller and servo motors. Directionality is provided by the G.P.S. component of the system. The entire system is solar rechargeable (trickle charge while in use) via the two solar panels mounted on top of the hopper. At the end of the day, the farmer can return it to a central charging station and remove the batteries for freshly recharged ones. This allows for use between many farmers of the same community. Our 3-D printer was used to fabricate parts necessary for the conversion of the seed planter (bushings, seed disc driver).
3 Key Elements:
- Up-scaleable: the S.I.F. can be up-scaled with larger motors, larger hopper or watering tank. This would provide for longer planting cycles, improved ruggedness and an initial watering of the planted seeds.
- Simple to program via Arduino microcontroller: an icon based, user interface would provide for simplicity in programming, regardless of farmer language
- Commonly available parts: the Beta version would be fitted with common bicycle wheels. Bicycles in underprivileged countries are more common than manufactured parts. Remote areas would greater access to spare parts which are easily accessible and replaceable.
Third Place Winners:
Team: Westmount Robotics
School: Westmount Secondary School, Hamilton, ON
Robot: Automatic Pill Dispenser