Light, Sound, and Ultrasonic Sensor
Doc
• leJOS API
– http://lejos.sourceforge.net/nxt/nxj/api/index.html
• leJOS Tutorial
– http://lejos.sourceforge.net/nxt/nxj/tutorial/index.htm
MMN Lab.
Light Sensor
• Constructor
– LightSensor(SensorPort port)
– LightSensor(SensorPort port,
boolean floodlight) )
• Method
– int readValue()
• Higher numbers indicate more light
– Int readNormalizedValue()
MMN Lab.
Light Sensor cont’d
• Sample program
MMN Lab.
Sound Sensor
• Constructor
– SoundSensor(SensorPort port)
– SoundSensor(SensorPort port, boolean dba)
• Method
– int readValue()
– Void setDBA(boolean dba)
MMN Lab.
Sound Sensor cont’d
• Sample program
MMN Lab.
Ultrasonic Sensor
• Constructor
– UltrasonicSensor (SensorPort port)
• Method
– int getDistance()
MMN Lab.
Ultrasonic Sensor cont’d
• Sample program
MMN Lab.
Lab4
• Scenario
– 1. Move forward until light sensor detects the
black area
– 2. Use the sound sensor such that the arm
will hit the ball away after a indication
– 3. Start to move and stop before bumping
into the wall
• Hint
– For the arm, you can use Motor.PORT.Method to do
some action
MMN Lab.