{{:start:classes:principlesofdesign:foldingbike:start:drawbot.jpg?500x600}} A marker attached to thread from Spools attached to Stepper Motors are controlled by an Arduino Uno/Motor Shield. {{:start:classes:principlesofdesign:foldingbike:start:drawbotccc.png|}} {{:start:classes:principlesofdesign:foldingbike:start:drawbotccc2.png|}} {{:start:classes:principlesofdesign:foldingbike:start:drawbotccc3.png|}} {{:start:classes:principlesofdesign:foldingbike:start:drawbotccc4.png|}}