Motor Control

K67 - DC Motor Speed Controller Price Photo Docs
Control the speed of any common DC motor rated up to 100V (5A). Operates on 5V to 15V. Uses NE556 to pulse-width modulate a high current power MOSFET, IRFZ44. In this way motor torque is maintained. Adjustable speed control. Box mounted.

K158 - Bipolar Stepper Motor Driver Price Docs
Simple circuit to drive 4 wire (and 6 or 8 wire) bipolar stepper motors. Motor control is via STEP and DIRECTION inputs. Both these inputs are opto-isolated making it ideal for use with a PC running suitable software. Uses IRFZ44 and MTP2955 MOSFETs to drive the motors at currents up to 6A.

A Visual Basic 6 program, VB_Stepper, is available for controlling stepper motor kits K113, K158 and K179 from a parallel port. All source has been provided to allow you to write your own visual basic programs. It uses the ActiveX component RSTimer which is a high speed timer from Ramon Sala. You can view his other components and software at http://www.elprogramari.com

For further information please look at the Help file VB_DAS.HLP or using Word open VB_DAS.rtf

K166v2 - Bidirectional DC Motor Speed Controller PricePhoto Photo Docs
Control the speed of a DC motor in both forward and reverse direction from fully ON to fully OFF. Uses Pulsw Width Modulation (PWM) to maintain motor torque. Maximum 32VDC operation for controller and motor. Uses IRFZ44 and IRF4905 MOSFETs to drive the motors at currents up to 5A - see documentation for use at higher currents.

K166 was featured in the December 2004 edition of the Australian electronics magazine Silicon Chip - click here for article (ZIP, 868KB).

K179 - Unipolar Stepper Motor Driver Price Docs
Standard circuit to drive 5, 6 or 8 wire unipolar stepper motors. Can be operated in free-standing (internal oscillator) or PC-controlled (direction, step) mode. Uses IRFZ44 power MOSFETs to drive the motors. These MOSFETs have a low on resistance and can and can carry 6A each with needing a heatsink. Uses discreete logic ICs: 4013, 4030, 4093. Separate supply voltage for kit and motors if required.
Note: There was a schematic error in the original Kit 179 documentation. The current documentation is now correct. Also the output terminals on the PCB overlay are mislabelled - get the corrected overlay here. The overlay will be fixed in the next run of PCBs.


A Visual Basic 6 program, VB_Stepper, is available for controlling stepper motor kits K113, K158 and K179 from a parallel port. All source has been provided to allow you to write your own visual basic programs. It uses the ActiveX component RSTimer which is a high speed timer from Ramon Sala. You can view his other components and software at http://www.elprogramari.com

For further information please look at the Help file VB_DAS.HLP or using Word open VB_DAS.rtf

K1001 - 8-Channel Serial Servo Controller, Assembled & Tested PricePhoto Docs
K1001 is an 8-Channel Serial Servo Controller based on the Atmel 89C2051 microcontroller. It accepts RS232 or TTL serial data from a computer or microcontroller and outputs PWM (pulse width modulated) signals to control up to eight RC servo motors (as used in radio-controlled model airplanes, cars, etc.). Unused servo pins can be reconfigured for digital output to drive on/off devices.

Up to four controllers can be multi-dropped on a single serial port for controlling up to 32 servo motors - more on request.

K1001 is supplied fully assembled and tested.

FEATURES

  • Independent control of 8 servo motors
  • Up to 4 controllers can be multi-dropped to control up to 32 servos (more on request)
  • Unused pins can be configured as digital outputs
  • Controlled via serial port - RS232 or TTL
  • Selectable baud rates - 2400 or 9600
  • Selectable pulse width range
  • Simple 3-byte commands
  • Compatible with industry standard Mini SSC II servo controller by Scott Edwards Electronics
  • Power on LED - blinks when valid command received

SPECIFICATIONS

  • Power supply ............... 8 to 24VDC @ 17mA
  • Serial input .................. RS232 or inverted TTL
  • Baud rate .................... 2400 or 9600, 8N1
  • Pulse frequency ........... ~ 50 Hz
  • Pulse width range ........ Normal - 1.0 to 2.0 mS, Extended - 0.5 to 2.5 mS
  • Pulse width (startup) .... 1.5 mS
  • I/O voltage .................. 0V and 5V
  • I/O current .................. High (source) - 6 mA, Low (sink) - 20 mA
  • Size ........................... 4.9cm x 4.3cm (1.9" x 1.7")

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