Manual

ManualsBrandsPhidgets ManualsMotor ControllersAdvanced Servo 1-Motor USB Servo Controller (High Current)

Table Of Contents

Product Features
Installing the hardware
Downloading and Installing the software
Programming a Phidget
Technical Section
- How RC Servo Motors Work
- The PhidgetAdvancedServo 1-Motor
The PhidgetAdvancedServo software component uses degrees to specify position, velocity, and acceleration. The degree unit is translated into a pulse sent to the servo, but it’s up to the servo to translate this signal into a particular position. This translation varies between servo models and manufacturers so our degree abstraction will not be exactly the same as the servo you are using. Our degree abstraction is based on the HS322-HD servo, which is typically 10.4uS per degree.
API Section
We document API calls specific to the 1066. Functions common to all Phidgets are not covered here. This documentation is deliberately generic. For calling conventions in a specific language, refer to that language’s API manual.
- Functions
- Events
Device Specifications
Mechanical Drawing
Product History

1066_0_Product_Manual created: 07/09/09 Page 1

1066 - PhidgetAdvancedServo 1-Motor

For board revision 0

Programming Environment

Operating Systems: Windows 2000/XP/Vista, Windows CE, Linux, and Mac OS X

Programming Languages (APIs): VB6, VB.NET, C#.NET, C++, Flash 9, Flex, Java, LabVIEW,

Python, Max/MSP, and Cocoa.

Examples: Many example applications for all the operating systems and development

environments above are available for download at www.phidgets.com.

Product Features

Control the position, velocity, and acceleration of one RC servo motor.•

The PhidgetsAdvancedServo 1-Motor is powered solely by the USB cable – no additional •

power source is required!

High resolution - 125 steps per degree.•

Measures current consumption of the servo.•

Powers servo motors of up to 450 mA.•

Can be used with some motor controllers.•

Connects directly to a computer’s USB port.•

Summary of content (14 pages)

PAGE 1
066 - PhidgetAdvancedServo 1-Motor For board revision 0 Product Features • Control the position, velocity, and acceleration of one RC servo motor. • The PhidgetsAdvancedServo 1-Motor is powered solely by the USB cable – no additional power source is required! • High resolution - 125 steps per degree. • Measures current consumption of the servo. • Powers servo motors of up to 450 mA. • Can be used with some motor controllers. • Connects directly to a computer’s USB port.
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Installing the hardware The kit contains: You will also need: • A PhidgetAdvancedServo 1-Motor • An RC Servo Motor • A USB Cable 2 1 1. Connect the RC servo Motor to the PhidgetAdvancedServo 1-Motor. 2. Connect the PhidgetAdvancedServo 1-Motor to your computer using the USB cable.
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Downloading and Installing the software If you are using Windows 2000/XP/Vista Go to www.phidgets.com >> Drivers Download and run Phidget21.MSI You should see the icon on the right hand corner of the Task Bar. Testing the PhidgetAdvancedServo 1-Motor Functionality Double Click on the icon to activate the Phidget Control Panel and make sure that Phidget Advanced Servo Controller 1-Motor is properly attached to your PC. 1.
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If you are using Mac OS X Go to www.phidgets.com >> Drivers • Download Mac OS X Framework • Click on System Preferences >> Phidgets (under Other) to activate the Preference Pane. • Make sure that your Phidget is properly attached. • Double click on the attached Phidget to launch the Example. If you are using Linux Go to www.phidgets.com >> Drivers Download Linux Source • Have a look at the readme file • Build Phidget21 The most popular programming languages in Linux are C/C++ and Java.
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Programming a Phidget Phidgets’ philosophy is that you do not have to be an electrical engineer in order to do projects that use devices like sensors, motors, motor controllers, and interface boards. All you need to know is how to program. We have developed a complete set of Application Programming Interfaces (API) that are supported for Windows, Mac OS X, and Linux. When it comes to languages, we support VB6, VB.NET, C#.NET, C, C++, Flash 9, Flex, Java, LabVIEW, Python, Max/MSP, and Cocoa.
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capability to communicate with Phidgets on another computer that has the PhidgetWebService running. The PhidgetWebService also makes it possible to communicate with other applications that you wrote and that are connected to the PhidgetWebService, through the PhidgetDictionary object. Documentation Programming Manual The Phidget Programming Manual documents the Phidgets software programming model in a language and device unspecific way, providing a general overview of the Phidgets API as a whole.
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Technical Section How RC Servo Motors Work RC Servos are used for positioning applications. They were originally designed to control Remote Control airplanes and their low cost and high torque makes them very useful as an actuator in prototyping applications. An RC Servo can be instructed to move to a desired position by the controller. Internally, it monitors the current position, and drives the motor as fast as it can until it reaches the desired position.
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Limitations The PhidgetAdvancedServo does not know the current position of the motor on its own. If your motor is free to move, and is not being driven beyond the physical limitations of the motor, the position returned to your application will be very close to the position of the motor. Degree Abstraction The PhidgetAdvancedServo software component uses degrees to specify position, velocity, and acceleration.
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Using the PhidgetAdvancedServo with Electronic Speed Controllers (ESCs) Some DC motor controllers accept a servo motor PCM signal as valid input, and use the signal to control the speed of a DC motor. Examples of these include Victor and Thor series motor controllers from IFI Robotics. Operation of these are similar to the way the PhidgetAdvancedServo is used to control continuous rotation servos.
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API Section We document API calls specific to the 1066. Functions common to all Phidgets are not covered here. This documentation is deliberately generic. For calling conventions in a specific language, refer to that language’s API manual. Functions int Count() [get] Returns the number of servos this PhidgetAdvancedServo can control. In the case of the 1066, this will always return 1. This call does not return the number of servos actually connected.
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double VelocityMax(int ServoIndex) [get] : Constant VelocityMax is the absolute upper limit to which Velocity can be set. For the1066, this will always return 6400. double VelocityMin(int ServoIndex) [get] : Constant VelocityMin is the absolute lower limit to which Velocity can be set. For the 1066, this will always return 0. double Position(int ServoIndex) [get,set] Position is used for both the target and actual position for a particular servo.
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bool Engaged(int ServoIndex) [get,set] Enables a particular servo to be positioned. If this property is false, no power is applied to the motors. Note that when it is first enabled, the servo will snap to position, if it is not physically positioned at the same point. Engaged is useful for relaxing a servo once it’s reached a given position. If you are concerned about keeping accurate track of position, Engaged should not be disabled until Stopped = True.
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Device Specifications Pulse Code Period Minimum Pulse Width Maximum Pulse Width Output Controller Update Rate Typical: 20ms - Maximum: 25ms 83.3ns 2.7307ms Typical: 31 updates/second Output Impedance (control) 600 Ohms Position Resolution Lower Position Limit Upper Position Limit Velocity Resolution Velocity Limit Acceleration Resolution Acceleration Limit 0.0078125º (15-bit) -22.9921875º 233º 0.390625º/s (14-bit) 6400º/s 19.53125º/s2 (14-bit) 320000º/s2 Time Resolution 83.
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Mechanical Drawing 1:1 scale Product History Date July 2009 Product Revision Board Revision 0 1066_0_Product_Manual created: 07/09/09 Comment Product Release Page 14