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Signing UpStep 1What you need
1 solar motor with wire and panel. I got it several years ago, il don't know if this models still exists. You can do it with battery motor as well.
white connectors (the ones that look like snow flakes)
red rods
red connectors
Painting :
3 or more water paint tubes
3 or more milk bottle lids
3 or more tea spoons
1 wood stick or 1 fine paint brush
Paper :
squares (21 cm by 21 cm)
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Check out my knex MS021
http://www.instructables.com/id/MS021/