CROSS_OVER

Accommodation results have been announced. Teams not shortlisted for accommodation can still come and participate but accommodation will not be provided to them. There is no shortlisting to be done for non-accommodation participants. Anyone can participate without accommodation.
Registrations for CROSS_OVER close on 5th January 2010. Click here to register.
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Click here to get answers to a few Frequently asked Questions.

Two lofty peaks, one valley, no bridge... No, this isn't a NatGeo video, this is the ultimate event for the budding robotists in the country. Innovative, sturdy, stable design with a speedy yet accurate mechanism of constructing the bridge is what you need to CROSS_OVER and win the race against your opponent. Mind well, one wrong step and you might end up deep down the valley...!

Do you have it in you?

1.1 Problem Statement

Make a manually controlled machine which crosses a pit and competes against another robot in a one on one knockout event.

» Download the PDF version of the Problem statement.

Prizes worth INR 18,000 to be won.

Register here for CROSS_OVER.

View the Arena »

For further queries contact:

2.1 Arena Specification

The arena consists of four zones:

1. Zone A
   Zone A is at a vertical height of 450 mm from the ground. The outer dimensions of Zone A are 300 mm X 300 mm (length x breadth).

Side View

2. Zone B
   Zone B is an inclined surface with an angle of 26.56 degrees (tan-1 (0.5)) with the horizontal. The inclined plane descends from a height of 450 mm to a height of 200 mm. The side walls of Zone A and Zone B are coplanar. The horizontal distance between the highest and the lowest point of slope is 500 mm and also the width of Zone B is 500 mm (Refer figure 1).

Back View

3. Zone C
   Zone C is the pit of length 600 mm between Zone A and Zone B. It is at the ground level.

Top View

4. Zone D
   Zone D consist of rest of the track which will be traversed by the machine. It is a common track for both the machines. The track consists of a horizontal plane of length 500 mm followed by an inclined plane, which slopes down from a height of 200 mm and ends at the ground level making an inclination of 30 degrees with the horizontal and covering a lateral distance of 350 mm which leads to a flat track of length 550 mm. Width of the inclined plane is 500 mm surrounded by a boundary wall of height 100 mm. At the end of the track lies two spring loaded hinged doors of length 200 mm each. The weight of these doors would be less than 3kg each. A few pics of the gate have been given here: http://www.techfest.org/forum/index.php?topic=1355.0

Isometric View	Front View

Note: Please refer to the track diagrams for detailed information.

View the Machine Specifications »

3.1 Dimensions and Fabrication

1. The machine must fit within a box of dimensions 300 mm X 300 mm X 400 mm (LXBXH) at the beginning of the game.
2. After the start of the game, machine should divide itself into two parts, one component forming a bridge and the other traversing the entire arena.
3. The external wireless/wired remote control used to control the machine is not included in this size constraint.
4. The onboard power on the machine must fit within the aforementioned box.
5. Machine cannot be constructed using readymade Lego kits or any readymade mechanism. But you can make use of readymade gear assemblies. Violating this clause will lead to the disqualification of the team.

3.2 Power Supply

1. The machine making the bridge can use an externally placed or on-board electric or non-electric power supply. The traversing bot shall have to use on board power supply. Use of compressors is not allowed. However the power supply must be non-polluting and must satisfy the safety constraints determined by the judges. In case the machine is using a non-electric power supply, kindly get it approved from the organizers beforehand via email. Organizers are not responsible for inconvenience if approval is not sought.
2. The method of propulsion is at the discretion of the builder, provided it does not damage the arena in any way and it satisfies the safety constraints determined by the judges. The machine cannot use any mechanism which directly transmits the manual force to the machine. For example use of clutch wires is not permitted. The judges hold the right to subjectively determine if the machine violates this.
3. In case of an electric power supply, the voltage at any point on an individual component must be lower than or equal to 12 V at any point of time during the game.
4. The organizers will provide a standard 230V/50 Hz AC power supply. Any extension cords, eliminators, adaptors etc required will have to be arranged by participants themselves.

3.3 Controls

1. The component forming a bridge can be controlled by some wired/wireless remote control mechanism at all stages of the game, but the machine traversing the entire arena has to be necessarily controlled by a wireless remote control system. The participants have to bring 2 remote controls of distinct frequencies or a dual-frequency remote control, which can be switched to either frequency just before the start of the run. This is done to avoid frequency interference with competing machines.
2. In case of wired mechanism of the component forming the bridge, the wire must be slack at any point of time during the game. The total length of wire extending from the remote control to the machine must be minimum 3 meters.

View the Rules »

4.1 Competition Rules

1. The competition will be played on a knock-out basis, with two machines competing against each other at a time, and the loser being disqualified.
2. The aim of the game is to pass the hinged door by pushing it and reach the finish line before the opponent.
3. The maximum run-time for a race is 5 minutes.
4. Launching mechanism of any kind at any point of time during the game is prohibited. Organizers hold the right to subjectively evaluate this clause. Any team found violating the rule will be immediately disqualified. Launching mechanism is defined as the mechanism in which no part of the traversing machine is in contact with rest of the machine while crossing over Zone C.
5. If the participants are not able to finish the track in the given time then the participant that has reached furthest on the track wins.
6. The formation of bridge can take support of only Zone A and Zone B.
7. While crossing Zone C, if any component of the machine falls into the pit the team has to restart by bringing entire machine to its initial state. But, if the traversing bot falls, (either out of Zone B or Zone D) after successfully crossing Zone C then the bot would be placed back into Zone A leaving the choice on respective participants of whether changing the state of the other bot or not.
8. The total run time will be inclusive of the time a team spends in restarting their machine. Only one restart per team is allowed.
9. The machines are not allowed to damage the other team's machine. Any team found involved in such an activity will be disqualified. This clause will be judged subjectively by the organizers.
10. The participants are not allowed to enter the arena at any point of time in the game.
11. The teams are not allowed to touch their machines once placed in the Zone A without prior permission from the organizers.
12. The diagram given below shall explain in more details the above given rules.

4.2 Elimination Rules

1. In the elimination round for the main event machines would be placed in Zone A initially and it should be able to bridge the gap between Zone A and B and some part of it should be able to cross over the bridge and reach Zone B.
2. The top teams reaching the Zone B in the shortest time will qualify for the finals.
3. In case no team is capable of qualifying the elimination round the top teams which reach furthest on the track will qualify for the finals.

4.3 General Rules

1. The teams must adhere to the spirit of healthy competition. The teams must not damage the opponent's machine in any way.
2. Judges reserve the right to disqualify any team indulging in misbehavior or violating any rules.
3. Any team that is not ready at the time specified will be disqualified from the competition automatically.
4. The machine would be checked for its safety before the race and would be discarded if found unsafe for other participants and spectators.
5. The name of the machine must be prominently displayed on the machine.
6. Judges decision shall be treated as final and binding on all.

4.4 Team Specification

A team must consist of a maximum of 4 participants. Participants from different educational institutions can form a team.

4.5 Eligibility

All students with a valid identity card of their respective educational institutes are eligible to participate in CROSS_OVER at Techfest 2010.

4.6 Certificate Policy

1. Certificate of Excellence will be awarded to all winners.
2. Certificates of Participation will be given to all the teams which complete the elimination track i.e. able to form a stable bridge and allowing the other bot to cross over it.

4.7 Accommodation

Accommodation registrations are closed.

Register here for CROSS_OVER.