| Quick reference | Quick answer |
|---|---|
| Code: | NXT |
| Control: | Autonomous |
| Open to: | Up to senior 4 |
| Max Robot Size: | Must fit between the walls of the playing field. |
| Weight Limit: | n/a |
| Playing field: | 4ft by 4ft square white surface with lines, objects, hallways, and rooms. See diagram below |
Lego Mindstorm versions
There are three versions of the Lego Mindstorm robots available from LEGO. You can use NXT, EV3 or Inventor robots for this competition
Competition Procedure:
The robot will be required to perform several tasks that include
package delivery, obstacle avoidance and finding the correct
rooms. Each task will increase in complexity. A score will be kept
for each event and tallied for each competitor. The robot that
scores the highest, overall points in the event will win the contract
(and the game). Following are descriptions of each task.
Scenario 1: Delivery Robot in a manufacturing facility.
You are developing a service robot to be used in a manufacturing
facility. The administration has set the following specifications:
- It must have finesse and predictability in order to be safe for both
workers and visitors. - It must be able to collect, contain (keep in the robot’s control),
and deliver (release control) of packages at designated
locations. e.g. a 2” (52mm) long piece of plastic pipe 1 ¼” (33mm)
diameter - The robot must stay within the !halls”#(white areas) and not hit the
walls. Three hits on the wall and the robot will be deemed too
destructive to continue any testing. - To standardize the robots, all of them should be made using the
motors and sensors from just one Lego kit. (3 servo motors, colour
sensor, touch sensor, distance sensor) - Using extra sensors or motors are permitted but under penalty.
The Manufactory
The ward that will be used for testing the robots is laid out as per
the diagram below. To help the robots navigate the hallways, a
black line (17 mm electrical tape) is on the floor. Outside rooms,
coloured circles appear and are 19 mm diameter in either Red,
Yellow, Green or Blue (Avery 2348).
The playing field itself is 4ft by 4ft.
The scoring matrix
Scenario 1: Manufacturing Robotic Layout, 4 rooms, 3 entrances
Task one: Robot will go from Assembly room 2, where it is to take control of a
Package and deliver it to the Final Product Area.
| Task description | Point value |
|---|---|
| a. Take charge of the package | 5 |
| b. Follow a black line | 5 |
| c. Turns right at (colour) when coming out of Assembly room 2 | 3 |
| d. Does not turn left towards Entrance 3 (does not detect colour) | 5 |
| e. Turns right at Final Product Area (detects the colour) | 5 |
| f. Signal that it has arrived | 2 |
| g. Discharges the package | 5 |
| h. Completed under 20 seconds | 3 |
| i. Hits the Walls | -2 per hit |
| j. Extra redundant sensors or motors | -5 per item |
| k. Loses package | -5 |
| l. The robot has been preprogrammed so it can just be ‘told’ which room to find | 10 |
Task 2: Robot will go from Final Product area where it is to take control of a
Package, and to deliver package at Entrance 3, The robot will encounter
obstacles in the path and have to signal, and wait until the obstacle has
been removed before continuing on the path
| Task description | Point value |
|---|---|
| a. Take charge of the package | 5 |
| b. Follow a black line | 5 |
| c. Turns left at (colour) when coming out of Final Product Area | 2 |
| d. Does not turn left towards Entrance 3 (does not detect colour) | 5 |
| e. Turns right at Entrance 3 (detects the colour) | 5 |
| f. Signal that it has arrived | 2 |
| g. Completed in under 30 seconds | 3 |
| h. Detects an obstacle on the path and signals (makes a noise) | 3 |
| i. Continues on the path after obstacle has been removed | 3 |
| j. Hits the Walls | -2 per hit |
| k. Extra redundant sensors or motors | -5 per item |
| l. Loses the package | -5 |
Task 3: Robot starting at Entrance 3 must take charge of the first package it
sees, then makes its way to Assembly room 1 to deliver materials to start
the manufacturing of the product. There will be obstacles in its way, the
robot must stop, signal and wait until the obstacles have been removed.
| Task description | Point value |
|---|---|
| a. Take charge of the package | 5 |
| b. Follow a black line | 5 |
| c. Turns right at (colour) when coming out of Entrance 3 | 2 |
| d. Does not turn left towards Assembly Room 2 | 5 |
| e. Turns left at Assembly room 1 (detects the colour) | 5 |
| f. Signal that it has arrived | 2 |
| g. Completed in under 20 seconds | 3 |
| h. Detects an obstacle on the path, stops, and signals (makes a noise) | 3 |
| i. Continues on the path after obstacle has been removed | 3 |
| j. Hits the Walls | -2 per hit |
| k. Extra redundant sensors or motors | -5 per item |
| l. Loses the package | -5 |
MRG General Rules:
Failure to follow the MRG General Rules may result in the following:
- Warning being issued, or
- Disqualification and loss of the round, or
- Disqualification from competition and or event.