[Picture]Mobile Robot Assignment

Last year, We have this course called “mobile robot”. Aim is program base a Lego Mindstorm NXT robot. robot should be collecting boxes, follow a line, find objects (like box), collecting objects, back to start area, release objects, continues follow a line and collecting box. LEGO Mindstorm NXT robot using Lejos firmware. Java programmer can easily start work in Lejos. It is base on the J2SE.

In robot assignment, 2 or 3 student make a group and work together. they need design and program for robot. Right side’s picture is a robot designed by our group.

Main program work is process informations from each sensor, there are 4 sensors may be used in robot:

Touch Sensor
Light Sensor
Ultrasonic Sersor
Sound Sensor

My group robot use Touch Sensor, Light Sensor and Sound Sensor. When robot follow on the way. Light Sensor can support line information of road. robot can use these information make sure it is on the line or out line. Touch Sensor send back information when robot touch a object, and robot command claw collect object. Sound sensor only used for emergency stop. when Sound sensor get a high level voice. robot should stop at once, and waiting for next high level voice for continue working.