Single Side PCB for discrete
3 axis Stepper Driver Board with PC interface

CNCZONE's tachus42's 3 Channel Discrete Unipolar Baord :
This board is one single sided PCB which is capable of being manufactured by the DIY'er. It utilizes a DB25 connector that is configured to use a standard DB25 cable assembly for PC connection. It is capable of handling stepper motors with power supplies up to 35V. The MOSFET drivers are capable of very high current drive (>20A). However depending on the PCB material shouldn't be used at currents greater than 5 or 6A, without beefing up the traces from the FET's to the connector.
Tachus42 Wiki Support Info
Board Layout in pdf format
3 Axis Schematic in pdf format
pdf documentation
Copper for SS PCB Toner Transfer in Acrobat format (pdf)

Videos of the board   Video1 Video2  Video3

Parts Information for :

Parts List Printable Sheet

CNCzone's tachus 42 designed a 3 axis chopper board to complement the the above 3 axis unipolar board. This chopper board will allow power supply voltages greater than the voltage of the motor by substituting a chopper circuit inplace of a high wattage power resistor (sometimes referred as a ballast resistor)
tachus42's 3 Axis Chopper Adapter For the above Unipolar Driver
Copper for SS PCB 600DPI (png)
Copper for SS PCB 600DPI (pdf)
Schematic (pdf)
Component Layout (pdf)
To print the copper bit maps from IE, place the cursor over the link of the copper bitmap file you want
click "save as". This will place the file on your local machine (in a folder of your selection, Desktop makes
it easy). Open the file with Microsoft Photo Editor, under File > Properties set the Resolution to 600 Pixels/Inch

Last updated 9/25/2008