Controls Description - Parallax 28823 User Manual

16-channel servo control with a usb interface rev b
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Controls Description

To control the servos in real-time mode, connect your servos to the PSCusb and simply slide the power
switch on the PSCusb to the ON position. Now, moving the corresponding servo position slide bar in the
PSCI software positions the servo.
Offset
Not all servos are alike so the offset control allows you to vary the center point of each servo. This may
not matter too much for standard servos, but is very helpful when controlling servos modified to rotate
360 degrees.
Position
You may use either the slide control or the up/down arrows, or enter the servo position numerically to set
the servo position. Please note that by clicking on the numbers 2500, 1500, or 750, the servo position
will be set to that number. These numbers correspond to the width of the servo command pulse, in
microseconds.
Rate
Each servo may be set to a rate of rotation. Furthermore, each servo may have a different speed for
each frame. A servo rate of 0 will cause the servo to move as quickly as possible; it's fastest rate. A
servo position of 63 will cause the servo to move to it's destination position at its slowest rate. At speed
63, the servo takes about 45 seconds to complete a 180 degree motion.
Delay
When a frame is executed, as in animate mode, a servo command is sent to the PSCusb for each servo in
the order 0,1,2,3... After each servo command is sent, the delay time is observed before sending the
next servo command. The Delay parameter has no effect when operating in real-time mode.
Frame
The number to the right of the word "Frame" indicates the current frame.
Go to
The number to the right of the phrase "Go to" shows the frame number that will be jumped to when all
servo commands have been sent and all delays have been observed for the current frame. Note: no
servo commands are sent for servos that appear to be unused.
Animation Controls
Controls are provided to facilitate the creation, controlling, and editing of animation sequences. By
hovering the mouse over each control button (without clicking) a hint will pop up to help clarify the
purpose of the button.
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Parallax, Inc. • Parallax Servo Controller – USB Rev B ver 3.4 (#28823) • 8/2006

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