The Pololu Dual Serial Motor Controller
For a robot to interact with its environment, it must be able to convert
electrical signals into motion. However, the power requirements of
actuators
, electrical devices capable of producing motion, are typically
so high that normal digital circuitry cannot drive them. In addition,
precise motion control requires constantly changing the signals sent to
the actuators, leaving the control circuitry with little time to attend to
other tasks.
The Pololu motor controller bridges the gap between robot controllers
and power-hungry actuators. Using one serial output from your robot
controller, you can independently set each of two small DC motors (the
kind typically found in remote-control cars and motorized toys) to go
forward or backward at any of 127 different speeds. To control
additional motors, you can connect multiple motor controllers to the
same serial line. The motor controller is compatible with the Pololu
Servo Controller, so you can control an almost unlimited number of
motors and servos with one serial line. Because of its small size, the
motor controller can fit almost any robot design.
Specifications
PCB size................................. 1.00"
x
0.85"
Motor ports............................. 2
Speeds.................................... 127 forward, 127 backward, and off
Maximum current................... 1 A per motor (continuous)
Supply voltage........................ 5.6-25 V
Data voltage............................ 0 and 5 V
PWM frequency...................... 600 Hz
Serial baud rate....................... 1200-19200 (automatically detected)
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Pololu
© 2001
http://www.pololu.com/
