A MAD TEA PARTY

Programming level 1

Tilting mechanical table

P1

How to build

Tilting mechanical table

  • Build a table for the tea party and its guests.
  • The table tilts on an axis in one direction or the other.
  • The figures sit on two sides of the table on a pushable carriage, the wheels of it are made of gears, the track is made of drive rails.
  • The figures can be pushed on either side according to the direction of the table.

P1

Tilting mechanical table

P1

Programming level 2

Two types of puppet theatre

P2

How to build

Two types of puppet theatre

a.) Build the table and the figures as in P1.

  • The table can be tilted using a lever and a shaft.
  • The guests are mounted on 1-1 DC motor and can be moved by 2 Touch sensors.
  • The Touch sensors control the figures on both sides simultaneously. When the table is tilted, pressing the corresponding Touch sensor will control the figures in that direction.

b.) Behind the paravane of the constructed puppet theatre, the figures are mounted on 2 horizontally mounted DC motors and a table top mounted on an axle is tilting in the middle of the scene.

  • The figures can be moved by 1-1 Touch sensors, which also make the table tilt. The other two tea party guests are set up on the paravane.

P2

Two types of puppet theatre "A" version

Two types of puppet theatre "B" version

P2

P2

Programming level 3

Automatic tilting table

P3

How to build

Automatic tilting table

  • Build the table and guests as in P2. Connect 2 IR Photoreflectors.
  • 1 servo motor is mounted in the table top and tilts the table randomly in one direction or the other.
  • The table legs are monitored by 1-1 IR Photoreflector. That IR Photoreflector, the way the table tilts, activates the figures on both sides and moves them in the direction of the tilt, and then re-sets all the elements of the robot to the centre, to the default position.

P3

Automatic tilting table

P3

P3

Programming level 4

Two exciting solutions for table tilting

P4

How to build

Two exciting solutions for table tilting

a.) Build the table and guests as in P2. Connect 2 IR Photoreflectors and an Accelerometer.

  • The Accelerometer controls the tea party figures in the two possible directions, and 2 IR Photoreflectors observe the figures from both directions. Whichever sensor detects the figures, the table tilts in that direction, following the movement of the figures.
  • After each movement, all the figures in the scene return to the centre.

b) Build the figures, as in P2. Connect 4 touch sensors.

  • The design of the table is different from the previous ones, it is cut “in two” lengthwise, which allows the table parts to tilt in different directions. The two halves of the table are each moved by a servo motor.
  • The angle of inclination of the table tiles always takes a different value using a random number generator.
  • The pieces can be guided sideways by 2 – 2 Touch sensors in the direction of tilting, and the table returns to its initial position.

P4

Two exciting solutions for table tilting "A"

Two exciting solutions for table tilting "B"

P4

P4