Hardware Reference
In-Depth Information
FIGURE 5.48
Zip tied wires to the heated board to relieve stress on the soldered joints.
When using the Melzi board, pay particular atention to polarity of the incoming power. The
board is marked and black goes to ground (gnd)! Failing to wire the board properly will risk
smoking (destroying) your board. In addition, motor wiring is terminal-specific. Use a multi-
meter to identify what motor leads belong together (pairs will have some low resistance, like
8 Ω whereas nonpairs will be essentially open circuits). Ensure that your wires are paired by
using a multimeter and measure the leads on the steppers. Black and green are a pair as can
be seen in the images of
Figures 5.49
and
5.50
.
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