A stepper driver card "Converts" the PC's low voltage Parallel LPT port signals
to high voltage/amperage for the stepper motor
 
 

StepPulse an Direction	Status	WebPage	Price (March 2003)
MD1   10 MicroStep BiPolar 1axis UpTo 7Amp UpTo 80Volt Looks a lot alike Gecko drive	Should work	see google ad banner or www.usdigital.com	MD1 1axis  per drive
Unipolar  1axis 1,5 (2,5)Amp 35Volt	?	LiniStepper v1.  Microstepping Stepper Motor Driver Kit	1axis = 30USD Kit 3axis = 75USD Kit
UniPolar (PIC Puls&Dir to Phase)	?	Dak Engineering	No kits (See Phase Control)
BiPolar 1axis 7Amp 80Volt	Works for me on XYZ axis	Gecko Drive	G201 = 114USD for 1 axis G210 = 148USD for 1 axis
BiPolar 3axis 2,1Amp 44Volt	?	NC-Step.de	3axis kit = 20+72=92 Euro + ?? for optocoupler pcb
UniPolar 3axis 3Amp 46Volt	?	Brewingtontech	115USD
BiPolar 3axis 2Amp 18Volt	?	Camtronics	125USD Kit
BiPolar 3/4axis 3Amp 55Volt	Uwe Has tested it and said it worked	Uwe-wulf Microstepping	3axis      = 300 Euro  3axis kit = 175 Euro  4axis      = 400 Euro  4axis kit = 225 Euro
UniPolar 3/4axis 1,25Amp 35Volt	?	hobbycnc.com	3 axis kit = 50USD 4 axis kit = 60USD
Sanyo Denki sells motors in combination with driver		Sanyo Denki Step Syn	1motor + driver
Oriental Motor sells motors in combination with driver		Oriental Motor Vexta	1motor + driver
BiPolar 1/3axis 2,5Amp 35Volt	?	xylotex.com Microstepping	1 axis    50USD 3 axis 150USD
Elektuur  L297 + L6203 1Axis 42Volt 4Amp Bipolar full & half step Elektuur 1999 Nr429/430 page36/37		www.elektuur.nl	www.elektuur.nl  pcbboard PCB board 13,20 Euro www.nc-step.de L297 = 6 Euro L6203= 9 Euro
Steve Blackmoore's Hobby CNC L297 + L6203 1Axis 42Volt 4Amp Bipolar full & half step		http://www.pilotltd.net/cnc.htm	Layout + schematics
French site L297 +L6203 1Axis 42Volt 4Amp Bipolar full & half step		http://www.ifrance.com/mac1/PAP8A/Pap8abl/	Layout + schematics
L297+L298 L297+L6203 and steppermotors		=>Nederland<=   is wel een beetje duur http://www.haltronics.nl/
Bipolar Microstepping with Microchip pic18f452 application note AN822 Pic and L298 or L6203		http://www.microchip.com/download/appnote/pic16/00822a.pdf
Microchip pic16f84 LMD18425 bipolar Microstepping 55volt 3amp		http://www.embeddedtronics.com/microstep.html

You Could try step puls/dir on any puls/dir driver card that can be configured for xy axis at D0 To D7 thats pin2 to pin9
 
 

Phase Control	Status	WebPage	Price (March 2003)
Unipolar upto10Amp & upto 100Volt		Use TIP120 and up(Transistors)	Cheap say 20 USD/Euro Link tip120pcb.htm Also see Dak Engineering for Puls&Dir to Phase PIC

Bipolar is better as UniPolar in Performance
Unipolar is Cheaper
 
 
 

Gecko Drive Resistor calculator

Phase Amperage (For example 2.25 gives 22.26 KOhm resistor ) Resistor in KiloOhms = (47 * I) / (7 - I)  For 1 to 7Amp range G210A (Jumpers inside) Use a Kilo Ohm Resistor (1/4Watt 5%) Connected on terminal 11-12 Resistor in KiloOhms = (47 * I) / (2 - I)  For 0.3 to 2Amp Low range G210A (Jumpers inside)  Use a Kilo Ohm Resistor (1/4Watt 5%) Connected on terminal 11-12

 

  The first calculator determines the resistance for a desired LED current while the second calculates the current for a given resistance.

  If LED's are connected in series - ADD their voltage drops together to get the total voltage drop.

  Entering a zero for the LED voltage drop will yield the resistance and wattage for a resistance only circuit.