The magical fish
Programming level 1
Puppeteering with puppets
P1
How to build
The robot
Construction:
- Build a mother figure with axially movable arms.
- Build a boy figure with axially movable arms.
- Build a fishing rod with gears using magnets tied on and off with string.
- Fish and symbolic river as the environment. Magnets are placed on 1-2 fish and thus some fish can be caught from the river with the fishing rod.
P1
Static figures
P1
Programming level 2
Figures equipped with DC motor
P2
How to build
The robots
a.) Mother built in the same way as P1.
- Boy is a large figure with a fishing rod with 1 DC motor and gear transmission built into it’s arm. He uses 2 Touch Sensors to wind and unwind the string with the magnet to catch the fish.
- Fish and surroundings are constructed in the same way as the P1.
b.) Mother constructed as in P1.
- Boy constructed as in P2/a).
- Fish moves forward with 1 DC motor, 1 Touch sensor, tail moves with 1 servo motor. 2 LEDs (1 right, 1 left when moving) light up.
P2
The robots a)
The robots b)
P2
P2
Programming level 3
Accelerometer controlled robot operation
P3
How to build
The robots
- Mother built in the same way as P1.
- Boy built similar to P2, but with 1 accelerometer decision to wind up and down the string on the fishing rod built into it’s arm.
- Fish structure similar to P2, but with 1 infrared sensor mounted on its side. It will stop if it detects a block on the end of the fishing rod, but it will keep the tail moving and light up the LEDs on the corresponding side.
P3
The robots
P3
P3
Programming level 4
Interaction between a static robot with gears and an accelerometer robot
P4
How to build
The robots
- Mother built in the same way as P1.
- Boy built like P1.
- Fishing rod with 1 servo motor and 2 push buttons, turns left and right in steps. 1 DC motor, controlled by 1 Acceleromotor, winds and unwinds the blocks mounted on the line, which are detected by the fish.
- Fish on a rack track, mounted on 1 DC motor, “swim” forward with gears at the push of 1 button. 1 infrared sensor is mounted on them, if it detects the dice mounted on the fishing rod they stop. Then the rack track is lifted and the 2 LEDs on the fish start flashing.
P4
The robots
