From Zen_Toolworks_Wiki

Instruction of setting up Zen Toolworks 3977 Based 3 Axis Stepper Motor Driver.

Motor wire harness, 6 wires, 1,2,3,4,5 and 6. 1,3,4 and 6 will be connected to A,A-,B and B- on driver board for each motor.

22 AWG motor cable, 4 conductor.

Prepare the motor cable with a wire stripper.

One side of the motor cable will be connected to driver's motor terminal. Let's connect it to X Axis for our demo.

Heat shrink tubes included in the package are for your convenience. Also a small section of solder.

Put the heat shrink tubes on the wires as shown. Pay attention to the order, 1,3,4,6 from the motor harness, will be connected to 1,2,3,4 of motor cable.

Wires have been soldered together.

Use heat shrink tubes to cover the exposed wires.

Using a heat gun shrink the tubes on those four wires.

Now ready to move the big heat shrink tube.

You can put all 6 wires from the motor harness into the big tube.

All set after using the heat gun shrink the tube.

Connect the wiring harness to the motor.

Other side of the cable is connected to the driver board. Make sure all connections are secure.

Now let's start preparing the power supply.

Cut off the connectors come with the wire, we don't need them.

Strip the wire end with the stripper.

Two power cable wires are connected to L and N terminal on the power supply. If the plug is polarized (one prong is wider than the other) Connect the smaller of the two to the L(Live) Terminal and the Wide one to the N(Neutral).

In practice it would be safer to use a full 3-prong plug, a good source of these are extra computer cables. The wiring by standard should be as follows: Black=L, White=N, Green=GND(the symbol with bars on it.)

Connect the power supply to 110V outlet.

Check with a multimeter, make sure DC output reads 12V. You can adjust the output voltage by turn the adjustment screw on the right hand side.

ATTENTION:Now, disconnect it from the outlet.

Now, let's connect the DC power supply to the driver board. We are using a red wire (16 AWG) as positive and black one as negtive.

This picture shows the power connection to the driver board. Double check, you are connect them exactly as shown!!

Connect the parallel printer cable to the board.

New desktop computers might not have this 25pin parallel connector any more. If that is the case, you will either find an old computer or a PCI adapter.

Now everything got wired up and ready to run. We will work on the software part.