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SSC32 controlling library

Project description

This is simple interface to control RC servos with an SSC32 board.


  • Direct and grouped queries (#<N>P<US> and <SERVO_POS>…T<MS>)
  • Angle (degrees or radians) to microsecond position calculation
  • Simple configuration file that help to map board output pin to servo name and provide limits.
  • Sequences scripts (in YAML format)


>>> import ssc32
>>> import math
>>> ssc = ssc32.SSC32('/dev/ttyUSB0', 115200, count=32)
>>> ssc[2].position = 2000
>>> ssc[3].name = 'pan'
>>> ssc[4].name = 'tilt'
>>> pan_servo = ssc['pan']
>>> tilt_servo = ssc['tilt']
>>> pan_servo.degrees = 0
>>> tilt_servo.radians = math.pi/4
>>> ssc.commit(time=1000)
>>> ssc.is_done()
>>> ssc.is_done()
>>> ssc.description = 'My camera's pan/tilt'
>>> ssc.save_config('my_pantilt.cfg')


  • Change n to r to allow running on non-Windows platforms.


  • Add ssc32yaml script runner
  • Don’t change servo position on init (Servo.is_changed flag)


  • Servo script interface with YAML serialization/deserialization
  • Move to package
  • Depends on PyYAML


  • Rename Servo properties -> Servo.degrees, Servo.radian -> Servo.radians
  • Use callback for Servo
  • Description for configuration (SSC32.description) line starts with #~

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