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Step 3
Remove the plastic film from the bottom of the motor
mount and stick it firmly onto the upright. Make sure
the coloured disc isn't touching the top of the upright.
Step 4
Use the two crocodile leads to connect from the motor
terminals to the Motor 1 terminals on the Crumble as
shown. If you have a 2xAA battery holder, clip the battery
snap connector onto the battery holder terminals. If you
have a 3xAA battery holder, switch it on. Select the file
'Run motor' from the Crumble folder. Click on the green
arrow to run your program, and check the disc rotates.
Ack
Step 5
Click on '5' seconds and type in
different values to change the
length of time for which the disc
rotates. Click on '50' and type in
different values to alter the
speed of rotation.
Step 6
You can try colouring in discs
with different colours or
patterns to see what effects
you get when you rotate them.
Maxwell's disc
Benham's disc
Newton disc
Step 7
Switch off (if you have the 3xAA battery holder) or unclip the battery snap from the battery holder (if
you have the 2xAA battery holder) when not in use to avoid draining the battery.
Copyright © Caroline Alliston 2022
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