UNIVERSITY OF CALIFORNIA Los Angeles - Users - UCLA
UNIVERSITY OF CALIFORNIA Los Angeles - Users - UCLA
UNIVERSITY OF CALIFORNIA Los Angeles - Users - UCLA
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applications. These motors basically create rotary motion, and it is<br />
possible to convert it to run mechanical devices such as levers, pulleys, and<br />
gears. Stepper motors are used for my project to control precisely X-Y<br />
coordination on the aluminum sheet.<br />
Figure 55. Japan<br />
Servo Stepper Motor<br />
KH56KM2-901<br />
With a microcontroller –<br />
arduino 65 board – I was able to<br />
control the steps per degrees of<br />
the stepper motors, and they can<br />
translate the steps into linear<br />
distances. They can very useful<br />
for moving a precise distance or a<br />
specific number of rotations. 66<br />
The general concepts of stepper<br />
motors are below.<br />
Figure 56. ULN2004 transistor<br />
[T]he stepper motor combines both precise positioning and a full 360-degree<br />
range of motion. Stepper motors move in discrete steps around a circle. For<br />
example a 200step motor moves 360 degrees in 200 steps (1.8 degrees per<br />
backward. They have reasonably good torque, as well. However, they are more<br />
complex to connect than other motors. 67<br />
Figure 57. Assembled<br />
circuit<br />
Figure 58. Unipolar connection diagram (KH56KM2-901)<br />
65<br />
http://www.arduino.cc/ (accessed May.22.2008)<br />
66<br />
O'Sullivan, Dan. and Tom Igoe. Physical Computing: Sensing and Controlling the<br />
Physical World with Computers. Course Technology PTR, 2004, p260<br />
67<br />
O'Sullivan, Dan., Physical Computing, p250<br />
J.KIM_A LANDSCAPE <strong>OF</strong> EVENTS 52
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