Build a track for the ‘train’ to go back and
forth across. It should switch directions
after a set amount of time.
Then add switches so that when
the train hits them it triggers the
direction change.
Build a table that turns 180º,
hits a switch, changes
directions, hits the switch again,
and continues to change
directions.
Build a conveyor belt. An object moves
one way until it hits a light sensor, which
switches the direction of the belt.
Make a machine
spins the table 180
degrees, than moves
the drill up and down,
continuously.
Make a block sorter that sorts out 3 different sizes of blocks. Use
motors, conveyor belts, lights, light sensors, switches. The blocks
must be sorted into bins.
Make a temperature controlled fan that has a lamp
that heats until a specified temperature, then when it
hits that temperature, the lamp turns off and the fan
turns on to cool it until a specified temperature and
then the fan turns off and the lamp turns on again and
the whole cycle starts over… continuously!!!
Make an elevator that
goes up and down at
the push of a button.
If you push the switch
for floor one, the
elevator moves along
the track until it hits
the switch at floor
one. Also, whenever
the elevator arrives at
a floor, a light turns on
and it beeps. The
elevator must stop at
the same spot
whether it is going up
to a floor or coming
down from a floor.
Make a sun tracker that senses light from various
places around the sensor. Then it turns so that the
sensor received as much light as possible.