K113 - Dual Stepper Motor Controller
Connects to the PC printer port & will drive two stepper motors (using software) up to max. 3A each. All contained in an extended D-shell case. Will also accept 4 inputs from external switches. DOS based software (including source) supplied to control motors and monitor inputs. Software will run interactively or process a text file of commands. Software even allows manual single stepping of motors. All components supplied except the stepper motors.

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

K158 - Bipolar Stepper Motor Driver
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
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
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
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.