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Generation 1 Electronics
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Darwin's powerhouse. You'll need three of these. Note that the X-axis is wired differently to the other two.
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You can program the PIC chips that the following boards use by putting them in a programmer, but it is also possible to program them in circuit. This saves the bother and pin-bending of taking them in and out of the circuit boards. See how here.
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Each stepper controller card drives one of the stepper motors. You need three of these boards for a fully functioning RepRap. Each board controls the position of one axis. Together, they position the print head anywhere in the 3 dimensional build area.
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