Using as a general-purpose motor driver, Section 4 – Pololu Dual MC33926 User Manual
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4. Using as a General-Purpose Motor Driver
MC33926 motor driver control lines and output signals are available via the set of pins along the left side of
the board, which means this shield can be used as a general-purpose motor driver controlled by devices other
than Arduinos. This section explains how to use the dual MC33926 motor driver shield this way and provides
some basic information about the motor driver pins to help get you started. However, we strongly encourage
you to consult the
(1MB pdf) for
detailed pin descriptions, truth tables, and electrical characteristics. This shield is essentially a breakout board for
two MC33926 motor driver ICs with additional logic circuitry to simplify the motor control, so the datasheet is
your best resource for answering questions not covered by this user’s guide.
4.a. Assembly for Use as a General-Purpose Motor Driver
1. Logic connections: The 11 small holes along the left side of the board, highlighted in red in the above
diagram, are used to interface with the motor drivers. You can optionally solder a 11×1 piece of the included
0.1″ male header strip to these pins. Soldering the pins so they protrude down allows the logic side of
the motor driver to be plugged into a standard
or perfboard. You can also solder
or custom
connectors to these pins.
2. Motor and power connections: The six large holes/twelve small holes on the right side of the board,
highlighted in yellow in the above diagram, are the motor outputs and power inputs. You can optionally
solder the included 5mm-pitch terminal blocks to the board to enable temporary motor and motor power
connections, or you can break off an 12×1 section of the included 0.1″ header strip and solder it into the
smaller through-holes that border the six large motor and motor power pads. Note, however, that each header
pin pair is only rated for a combined 6 A, so for higher-power applications, the terminal blocks should be
used or thick wires with
should be soldered
directly to the board.
3. Enable Jumper: You can optionally solder a wire or a 2×1 piece of the included 0.1″ male header strip
to the two pins highlighted in orange in the above diagram to create a board enable jumper. The left pin is
D2, and the right pin is VDD. D2 is internally pulled low, which tri-state disables the motor driver outputs
and allows any connected motor to coast. In order to enable the board, this pin must be driven high, either
through a connection to an I/O line or by connecting it to the neighboring VDD pin.
Pololu Dual MC33926 Motor Driver Shield User's Guide
© 2001–2013 Pololu Corporation
4. Using as a General-Purpose Motor Driver
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