LEGO NXT Archerfish Instruction Manual

Archersh
NXT Archersh
The Archerfish lies in wait for
his dinner, then spits a stream
of water at it to knock it down.

Body

3

Head

5

6

5

7

Tail

Connect Head to Body
Add Ultrasonic Sensor Zamor balls go
in here.

Attach Tail
Wiring
Connect the Ultrasonic Sensor to Port 4.
Connect the tail motor to Port C.
Connect the head motor to Port B.

Archersh Program
LOOP Block
Forever
WAIT Block
Port 4
Ultrasonic Sensor
24 inches
MOTOR Block
Port B
Up Arrow
Power 100
Wait for completion
Brake
MOTOR Block
Port C
Up Arrow
Power-15
Duration-30 degrees
Wait for completion
Coast
MOTOR Block
Port C
Down Arrow
Power-15
Duration-60 degrees
Wait for completion
Coast
MOTOR Block
Port C
Up Arrow
Power-15
Duration-60 degrees
Wait for completion
Coast
LOOP Block
Forever
The program on the top beam tells the Ultrasonic Sensor to detect
“insects” and shoot at them. The program on the lower beam tells the tail
to slowly waive back and forth.