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

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.