SumoBot Dónal Carty – Ian O’Donoghue – Kieron McCabe –

Large tire width and diameter = Greater Traction Wedge design at front of robot may lift opponents wheels off surface – reduces traction. High centre of gravity – easy to topple. Should contact the ground in multiple points. This gives a balanced robot. Wheels at the rear: difficulty with steering/movement. Keep wheels in a central position. SumoBot Flat tires? Rubber will cover larger surface area – Traction!

Ultrasonic sensor range: 14 degrees We took the cone of vision of our ultrasonic sensors into account. This is a very important aspect of the design as it will decide whether or not we can locate our opponent.  We will position our Ultrasonic Sensor at the front of our robot, inclined at 7 degrees to the vertical plane.  This will give us maximum range to find our opponent.

Design Idea 1- Wedge Pros: Instead of just pushing the opponent out of ring it could also flip them over. Could get partially under the opponent raising it slightly off the ground therefore reducing their traction. Large tire diameter/thickness: greater traction. Cons: Wheels vulnerable to attack from sides. Problematic steering/movement Basic

Design Idea 2 - SpiderBot Pros: Aesthetically pleasing. Wedge shaped – lifts opponent, reducing traction Balanced: Two points of contact with ground (wheels, business end) Cons: No attack/defence mechanism Enclosed PCB – Overheating?

Design 3 Pros: Wedge shaped – lifts opponent, reducing traction Balanced: Two points of contact with ground (wheels, business end) Low centre of gravity Large tire diameter/width = Greater traction. Very good attack/defence idea – Pneumatic Ram system Cons: Enclosed PCB board – over heating Pneumatics – very heavy Easily pushed from ring

Chosen Design Ultrasonic Sensors A simple gear train Light Sensors PCB board

Rationale Low weight and simple design to optimise speed and power 4 wheels = greater traction Compact design Low centre of gravity – difficult to topple Ultrasonic sensors positioned to optimise cone of vision PCB open to air – minimises problem of overheating