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  • Our Range of Stepping Motors
    From tiny NEMA 11 at 16.7 oz-in to the huge NEMA 43 at a whopping 1586 oz-in of torque!
  • blueChick v. 4.2 CNC Machine
    Available in two sizes 1'x3' and 1'x2' routing areas.
  • Mechanics to Minimize Backlash
    Running on tensioned roller chain to eliminate backlash and small drive sprockets to increase mechanical precision.
  • Cable Carriers
    Perfectly manage the cables and hoses with these cable chains.
  • greenBull CNC Machine
    If you need BIG, we've got BIG. Available in 5 foot and 6 foot widths. Make it as long as you want!
  • Spindles and VFDs
    1.5 kW, 2.2 kW and 4.0 kW available. Also see our 1/8", 1/4" and 1/2" ER-20 Collets
  • blackTooth Laser Cutter and Engraver
    New and coming very soon, lasing all kinds of materials.

CNC Electronics - Stepper Drivers, Motors, Power and more...

Here are the electronics that you will need to make the CNC Router move! I am offering a bundle of components as shown below and individual products. This equipment will have the power for the CNC router kits that I offer on the main sales page. This system will also enable many other CNC retrofits.

3 Axis Electronic Combos

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3 Axis Electronics Combo w/ Parallel Breakout Board

$390.00
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3 Axis Electronics Combo w/ USB Interface Board

$436.50
Qty:
Thumbnail:

This is our standard general purpose 3 axis electronics system. (3) 425 oz-in stepping motors
(3) Drivers (3.0Amp 24-40 Volts, 1-1/64 microstepping)
(1) 36v 8.8a Power Supply
(1) Interface Board either USB or Parallel (select the appropriate interface board in the price options. The USB option works with the exceptional Planet-CNC Software.

Click here for more information on this product.

See instructions for this product.
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3 Axis Large Motors Electronics w/ Parallel Breakout Board


$620.00
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USB 3 Axis Large Motors Electronics w/ USB Interface Board


$667.00
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This options is for the heavier and larger CNC machines. (3) 651 oz-in large stepping motors
(3) Drivers (6.0Amp 24-70 Volts, 1/2-1/256 microstepping)
(1) 36v 8.8a Power Supply
(1) Interface Board depending on the one selected (USB or Parallel) The USB option works with the exceptional Planet-CNC Software.

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3 Axis Heavy Gantry Electronics w/ Parallel Breakout Board

$460.00
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USB 3 Axis Heavy Gantry Electronics w/ USB Interface Board

$506.50
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This bundle would be used in cases where there is one stronger motor needed. In most cases, this larger motor is used to move the gantry as this would be the part of the machine that is heavier or has the most inertia.
(2) 425 oz-in stepping motors
(2) Drivers (3.0Amp 24-40 Volts, 1-1/64 microstepping)
(1) 651 oz-in stepping motor
(1) Driver (6.0Amp 24-70 Volts, 1/2-1/256 microstepping)
(1) 36v 8.8a Power Supply
(1) Interface Board Depending on the One Selected (USB or Parallel) The USB option works with the exceptional Planet-CNC Software.

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3 Axis Electronics Combo (Medium Motors) w/ Parallel Breakout Board

$265.00
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3 Axis Electronics Combo (Medium Motors) w/ USB Breakout Board

$311.50
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3 Axis Combo with 100 oz stepping motors

This is a 3 axis electronics system with a 100 oz-in stepping motor for smaller CNC and 3D printer machines.

  • (3) 100 oz-in stepping motors
  • (3) Drivers (2.5Amp 8.2-45 Volts, 1-1/32 microstepping)
  • (1) 24v 8.3a Power Supply
  • (1) Interface Board either USB or Parallel (select the appropriate interface board in the price options.
The USB option works with the exceptional Planet-CNC Software.

See instructions for this product.
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3 Axis Electronics Combo (Small Motors) w/ Parallel Breakout Board

$250.00
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3 Axis Electronics Combo (Small Motors) w/ USB Breakout Board

$296.50
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3 Axis Electronics Combo - 62oz in-stepping motors.

This is a 3 axis electronics system with a 62 oz-in stepping motor for smaller CNC and 3D printer machines

  • (3) 62 oz-in stepping motors
  • (3) Drivers (2.5Amp 8.2-45 Volts, 1-1/32 microstepping)
  • (1) 24v 8.3a Power Supply
  • (1) Interface Board either USB or Parallel (select the appropriate interface board in the price options.
The USB option works with the exceptional Planet-CNC Software.

4 Axis Electronic Combos

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4 Axis Electronics Combo w/ Parallel Breakout Board

$470.00
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USB 4 Axis Electronics Combo w/ USB Interface Board

$516.50
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4 axes systems are generally used as follows: 3 axes for x, y and z, and the 4th axis would turn the work piece being milled, or to turn the router/spindle for reach in specific applications.
(4) 425 oz-in stepping motors
(4) Drivers (3.0Amp 24-40 Volts, 1-1/64 microstepping)
(1) 36v 8.8a Power Supply
(1) Interface Board (USB or Parallel) The USB option works with the exceptional Planet-CNC Software.

Stepping Motor Drivers

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2.5 Stepper Motor Driver (Modular unit)

$45.00
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Modular 2/5 amp stepping motor driver

Here is a standalone stepping motor driver that is rated at 2.5 peak amps per phase. The driver will also accept a range of 8.2 to 45 volts and can be microstepped up to 1/32 (the step modes are: full, 1/2, 1/4, 1/8, 1/6 and 1/32).

Click here for more information on this product.

See instructions for this product.
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2.5 Amp Stepping Motor Driver for 3D Printer MainBoard

$38.00
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2.5 Stepper Motor driver

This stepping motor driver plugs conveniently into the 3D Printer main board. No cables from the main board to this board is necessary.

Click here for more information on this product.

See instructions for this product.
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Stepping Motor Driver (24-40 volts DC, up to 3.0 amps, microstepping from 1 to 1/64)

$54.95
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You'll need this to make the Stepping Motor work. This incredible piece of electronics translates a pulse into a high powered complex coil firing combination. this particular driver allows a 3.0 amp draw from the motor and accepts 24 to 40 volts. - Datasheet

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Stepping Motor Driver (24-70 volts DC, up to 6.0 amps, microstepping from 1/2 to 1/256)

$94.95
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This driver is usually paired with the NEMA 34 stepping motors. The driver will allow the motor a maximum of 6.0 amp draw. - Datasheet

Stepping Motors

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NEMA 11 Stepping Motor (16.7 oz-in)

$17.95
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Nema 11 stepper motor

This is the smallest stepper motor we've featured to date, but it still packs a nice punch in a compact, rectangular NEMA 11 form.

Click here for more information on this product.

See instructions for this product.
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NEMA 14 Stepping Motor (17 oz-in)

$15.95
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NEMA 14 stepper motor

This NEMA 14 form factor stepper motor features 17 oz-in of holding torque in a frame smaller (36mm) than most. 1/4" dual shaft (6.25mm).

Click here for more information on this product.

See instructions for this product.
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NEMA 17 Stepping Motor (62 oz-in 5mm single shaft)

$19.95
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62 oz-in NEMA 17 Stepping motors (also called stepper motor)

This is about the most powerful NEMA 17 frame size stepping motor you will find. This little bundle of power features 62 oz-in of holding torque. These NEMA 17 stepping motors are perfect for all kinds of small machines like 3D Printers, Laser Cutters and Engravers, and small form factor CNC machines.

See instructions for this product.
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NEMA 23 Stepping Motor

$24.95
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NEMA 23 Stepping Motor 100oz

This NEMA 23 Stepping motor has a step angle of 1.8 degrees (200 steps per revolution). It is a single shaft motor meaning that the shaft does not stick out of the back of the motor. The holding torque is 7.2 Kg-cm (0.707 N-m or 99.98 oz-in). Electrical specifications are 2.25 volts and 3.0 amps of current.

Click here for more information on this product.

See instructions for this product.
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NEMA 24 Stepping Motor (425 oz-in 1/4" dual shaft)

$49.00
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Moderately sized stepping motor NEMA 24. This is actually a NEMA 24 and not a NEMA 23 which has a very similar frame size. This stepping motor has the highest torque that we could find in the NEMA 23 and 24 size range. Wiring: Red and Blue to A+, Yellow and Black to A-, White and Brown to B+ and Orange and Green to B-. Datasheet for wiring and electrical specifications

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NEMA 34 Stepping Motor (651 oz-in 1/2" dual shaft)

$89.00
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This stepping motor has a large frame size and torque and can be used where a great amount of weight is carried and where high load against the motor turning direction is present. Wiring: Red to A+, Green to A-, Yellow to B+ and Blue to B-. Datasheet for wiring and electrical specifications

See instructions for this product.
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NEMA 43 Stepping Motor (1586 oz-in 3/4" single shaft)

$169.95
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NEMA 43 stepping motor 1586 oz-in

This NEMA 43 stepping motor is the largest and most powerful stepping motor we have carried to date. It features a super-sized 99mm frame and a whopping 1,586 oz-in of holding torque.

Click here for more information on this product.

See instructions for this product.

Power Supplies

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12 volt 9 amp AC Adapter

$19.95
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12 volt 6 amp AC Adapter

$17.95
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12 volt 9 amp AC Adapter

This is a standard 12 volt 9 amp AC adapter. It can be used to provide a power supply for 3D Printers and other smaller machines.

Click here for more information on this product.

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40 Watt CO2 Laser Tube Power Supply - 220V

$200.00
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40 Watt CO2 Laser Tube Power Supply - 110V

$200.00
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40 Watt CO2 Laser Tube Power Supply

Connect this power supply to a 40 Watt CO2 Laser Tube to create the lasing. We have these for 115 or 230 volt mains. All of the parts shown in the image are included: red wire extension, green wire terminal for adjusting the intensity and turning on and off the laser.

Click here for more information on this product.

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Laser Connector Wire to Power Supply

$19.95
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Laser Power Wire Connector

This is a laser connector wire which connects the power supply high tension line to the laser tube

Click here for more information on this product.

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Power Supply (36 Volts and 8.8 amps)


$59.95
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Power Supply (24 Volts and 8.3 amps)


$43.96
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You will need a power supply to power stepping motors and drivers and these 36 volt and 24 volt power supplies will deliver what the drivers and motors need.

Interfaces (Breakout Boards)

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5 Axis Breakout Board with Relay


$28.50
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This breakout board will connect the parallel port of your computer to the drivers that drive the motors. A relay is featured on this board so another device can be controlled on and off, such as the router/spindle. There are 11 output pins that can control various devices such as stepping motor drivers, coolant, spindle, mist, air, etc. 10 of these pins can be dedicated to motor axes for a total of 5 axes. 4 Input pins are provided for limit or home switches.

Click here for more information on this product.

See instructions for this product.
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USB Controller for CNC Machines

$75.00
Qty:
USB controller for CNC Machine

Control your CNC machine from your computer via the USB port commonly referred to as a breakout board. This 4 axis interface serves as an interface between the computer and the motor drivers. Based on the popular MK1 from Planet-CNC, you will need the Planet-CNC software with this board. The software is full featured and very easy to use.

This is a board designed by BuildYourCNC. For questions and support please contact us directly

Click here for more information on this product.

See instructions for this product.

Stops and Switches

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Single End Stop Limit Switch

$8.00
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This is a snap action switch and a little debounce circuit along for the ride. The board includes a convenient header and an LED to show its state. Only use this switch for signal level (5 volts low current) applications.

See instructions for this product.
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Emergency Stop (E-Stop) Button

$14.95
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If your CNC Machine starts to run wild, or decides to destroy itself, this button could save your machine, and your nerves! This button is capable of NC (Normally Closed - red side) and NO (Normally Open - green side) operation (notice the red and green on the bottom of the button). Push the button in to engage, and twist to release.

Click here for more information on this product.

See instructions for this product.
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Single Limit Switch

$5.60
Qty:
Limit Switch - 6-pack

$30.00
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Limit switches serve as the mechanism that tells the computer the limits of the CNC machine. When one of the axes moves to an axis limit, the switch is activated and the machine stops. These limit switches are also use to inform the computer of the home position. Typically, 6 of these switches are needed, two per axis. This particular limit switch is rated for 125/250 volts AC (VAC) and can handle 15 amps of current. For limit switch use for CNC machines, it will be connected to signal voltage levels like 5v, but you have the option of using this switch to turn on/off a device that has mains voltage levels (i.e. using it as an interlock to turn off something when a door is opened).

See instructions for this product.

Wire and Cables

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Unshielded 3 Conductor Stranded 22 AWG Cable per foot. Specify length in quantity field.

$1.00
Qty:
3 conductor stranded 22 awg cable unshielded

Use this cable for signal level or low power. We use this cable for the 3D Printer end stops to and from the 3D Printer Mainboard. The cable is unshielded and the conductors are stranded 22 gauge.

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Male to Female Parallel Cable

$15.99
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This is the cable that carries the signals from the computer to the CNC electronics. If there is a 25 pin female port on the back of your computer, and the breakout board has a male connector then this is the cable for you. Features: Direct through connection for each pin, shielded, 6.56 feet long (2.0 Meters), beige color, lead free and RoHS compliant.

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Male to Male Parallel Cable

$15.99
Qty:

This is the cable that carries the signals from the computer to the CNC electronics. If there is a 25 pin female port on the back of your computer, and a female port on your breakout board then this is the cable for you. Features: Direct through connection for each pin, shielded, 6.56 feet long (2.0 Meters), beige color, lead free and RoHS compliant.

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4 Wire Cable (per foot)

$1.50
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8 Wire Cable (per foot)

$3.00
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This cable is typically used for motor wiring from the drivers to the stepping motors. There are multiple wires within the gray jacket (called conductors). Specs: Unshielded, stranded copper, PVC jacket material, meets CSA/CE/UL specifications, standard flex (specifically made for use in motion applications). The individual wire insulation has the conductor number labeled so color coding is not necessary. Here is a handy link to learn about wire gauges and current handling capacity

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USB 2.0 Cable Type A Male to Type B Male - 10 FT

$4.80
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USB 2.0 Cable 10 Foot Type A Male to Type B Male

A USB 2.0 Cable with Type A Male connection at one end and Type B Male connection on the other end. 10 Feet in length.

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USB Cable Type A Male to USB Type A Male - 3 FT

$2.65
Qty:
3 Foot USB Cable Type A to USB Cable Type A

A USB Cable with Type A Male connectors at both ends. 3 Feet in length.

Connectors

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3 position female connector with 2.54mm pitch

$0.55
Qty:
3 position female connector with 2.54mm pitch

This connector will mate with male headers that have a 2.54mm pitch (pin spacing). This assembly includes three (3) crimp pins and the three position housing. The housing has a flap that keeps the crimp pin from sliding out. The crimp pins can be crimped with a special crimper, or a standard pair of needle nose pliers. This connector works well with our unshielded three (3) conductor cable.

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2.54 mm (0.1") Pitch Male Connector 36 pin Header

$0.75
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2x36 pin header IDC

This connector will mate with female connectors that have a 2.54mm pitch (pin spacing) This 2x36 pin header is intended to assist with prototyping. Whether you need to connect or solder, these headers are breakaway: meaning they can be broken apart easily.

Click here for more information on this product.

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25 Conductor Flat Ribbon Cable (per inch)

$0.08
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25 Conductor Ribbon Cable

25 Conductor Flat Ribbon Cable. This cable is used in conjunction with DB25 male and female connectors in order to create a user-specific cable length. Please specify how much cable you require.

Click here for more information on this product.

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4 Pin Female Molex Connector with Crimp Pins

$3.50
Qty:
Molex connector and crimp pins 3.96mm pitch spacing

We use this connector with our 2.5 amp stepping motor driver that is used to drive 3D Printers. Our standard 4 conductor cable is perfect for this connector. The crimp pins can be used with wire sizes between 18-24 gauge (AWG). The pitch (spacing between pins) is 3.96mm or .155 inches.

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One Male and Female Connector Set

$13.98
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4 Pin Round Male and Female Connectors

These connectors are perfect for stepper motors and drivers. The female connector is fastened to a panel and can be wired to any device requiring 4 wires. The male connector is connected to the device outside of the electronics enclosure that needs to be connected to the female connector.

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4 Pin Round Female Connector

$6.15
Qty:
4 Pin Round Female Connector

This connector mates with this male connector. These connectors are perfect for stepper motors and drivers. This connector would be fastened to a panel. The female connector can also be fastened to the male connectoras they both have mating threads. A set consisting of a male and female connector is also available.

Click here for more information on this product.

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4 Pin Round Male Connector

$7.98
Qty:
4 Pin Round Male Connector

This connector mates with this female connector. These connectors are perfect for stepper motors and drivers. The motor would have this connector on the end of the motor cable and the female mating connector would be fastened to a panel (bulkhead). The male connector can also be fastened to the female connector as they both have mating threads. A set consisting of a male and female connector is also available.

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DB25 Female Ribbon Connector

$3.95
Qty:
DB25 Female Ribbon Connector

This is a 25 pin D-Sub Female connector that snaps to a ribbon style cable. Various length cables can be achieved by using two of these connectors and the desired ribbon cable length.

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DB25 Male Ribbon Connector

$3.95
Qty:
DB25 Male Ribbon Connector

This is a 25 pin D-Sub Male connector that snaps to a ribbon style cable. Various length cables can be achieved by using two of these connectors and the desired ribbon cable length.

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DB25 Pin Female End Connector for PCB

$0.95
Qty:
DB25 Female End Connector For PCB

This is a 25 pin female end connector for PCB. It functions as a connector for parallel port devices such as stepper motor drivers.

Click here for more information on this product.

Sensors and Controllers

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Type K Thermocouple - Temperature Sensor

$4.95
Qty:
Type K Thermocouple Temperature Sensor

Type K Thermocouple Temperature Sensor. 1 meter length. A general purpose thermocouple with probes for temperature sensing.

Click here for more information on this product.

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Vacuum Pressure Controller

$95.00
Qty:
Vacuum pump controller

If you need to hold a specific range of vacuum pressure, this is the device that will do it. All you need to do is set vacuum range you desire and this device will control the vacuum pump to keep the pressure within this range.

Click here for more information on this product.

See instructions for this product.

Breakout Boards: One of the most important components included is the breakout board. This little gem allows you to interface your computer, using the parallel port, with up to four (4) stepper drivers. Equipped with all of the wire connectors, integrated circuits for interfacing and signal processing, and resistors to protect your computer from any damage, this will keep you CNCing without a hitch.

Drivers: Will translate the signals to what the stepper motors will understand, and amplify the translated signals to turn the motors. As you can see, there are loads of information silk screened on to the case for easy wiring. That funny looking striped metal piece is for heat dissipation, since these driver chips can get hot. Specifically, these drivers will be able to accept 24 to 40 volts with current up to 3 amps. Think of amps as the muscle and volts as how fast the muscle can be brought into the motors. These also enable microstepping at half, quarter, fifth, eight, tenth, 1/25, 1/32, 1/50, 1/64, 1/100, 1/128, 1/200 and 1/256 (whew, that was tiring). It even has protection circuitry within for overheating, over voltage and over current. there are dip switches for easy current switching and this driver will accept 4, 6 or 8 lead motors. Oh yeah, the most important thing, thiese puppies have idle current reduction.

Stepping Motors: Provide the linear motion. When the driver sends a combination of current to the coils of the motors, it will turn 1.8 degrees, or tighter depending on the microstep setting on the drivers. That is, if you have half step, then the shaft will turn .9 degrees per step, quarter step .45 degrees per step, and so on and so on... These are NEMA 24 motors (standards terminology which only refers to its faceplate specifications and measurements), but don't let the size fool you, these motors can hold at 382 oz-in or 425 oz-in of torque (depending on availability). The current rating is 2.8 amps and 4.17 volts, so you will need a power supply that can be drawn at 8.4 amps, which is a nice segway to the power supply.

Shaft sizes for the NEMA 24 are 1/4" and NEMA 34 are 1/2", typically.

Wiring diagram: Wiring diagram for 3-axis using the standard breakout board

Troubleshooting Tips:

If the motors are not turning, and you are wondering why? Below is a few simple steps you can take to localize the issue. These steps assume that you have Mach3 or another control software installed and the interface requires a parallel cable.

1. To determine if there is a signal coming out of your computer, you will need to probe the port on the back of the computer and jog to see if the voltage changes. You will need a multimeter. Test each pin that you set as output. If no signal, it is a software or computer problem.

2. If there is a signal at the port, plug in the parallel cable and test the other end to see if the cable is showing output. if not, the cable is bad.

3. If there is a signal from the parallel port, probe the respective pins on the breakout board, if not, then the breakout board may not be configured properly (jumpers).

4. If there is a signal, you are half way there. Then we will need to check the drivers.


Here is a great guide that was developed by one of my customers, David W, as he was troubleshooting his own electronics:

Trouble shooting - Build your CNC - diagnostic - motors won't /don't work

This is one trouble-shooting guide to the Blacktoe CNC table based on my experience. It begins at the point when you have followed all of the instructional materials to build the table, installed Mach3 on a desktop PC, configured the motors, plugged in the parallel cable, tried to jog one of the axises... and gotten nothing. It is also assumes that you have a multimeter and the basic tools. Here are some additional resources that you will probably want to read before you get started:

Mach 3 documentation: http://www.machsupport.com/documentation.php

Here we go:

1. Before we start properly, if you haven't already, disengage the transmissions by taking the chains off the sprockets to avoid an un-expected movement that might damage you or your machine. Also, be sure you don't electrocute yourself either -- unplug the logic system when you are working in the wiring (and be careful when you are testing). Disconnect your parallel cable for now (as long as you are at it, make sure you have the right cable -- you need a Straight Thru Serial DB25M/DB25M like this one [ http://www.amazon.com/Belkin-25ft-Straight-Serial-DB25M/dp/B00004Z5W7 ]). Also, restart your machine just to make sure you are starting fresh.

2. Download, install and start up a parallel port monitor:

http://www.geekhideout.com/parmon.shtml

This will give you immediate feedback on which pins are conducting at hi and lo voltages. Remember: "In TTL circuits, any voltage between 0 and 0.8 volts is called "lo" and any voltage between 2.4 and 5 volts is called "hi"."

3. Double-check your "Ports and Pins" configuration.

In Config/Ports and Pins/Motor Output you want these values:

X, Y and Z set to Enabled

X, Y and Z set to Step Low Active

X-axis: Step Pin #: 2
X-axis: Dir Pin #: 3
Y-axis: Step Pin #: 4
Y-axis: Dir Pin #: 5
Z-axis: Step Pin #: 6
Z-axis: Dir Pin #: 7

4. Go into Config/Ports and Pins/Input Signals/EStop and click on "Active Low". Mach 3 cannot disable the EStop, so this will "reverse" the emergency stop to inactive on a lo signal (such as when the plug is disconnected). You will click this setting on and off several times during trouble-shooting as you connect and disconnect the port cable, so get to know it:

Active Lo for when the cable is disconnected
Active Hi for when the cable is connected

5. In the Program Run screen, jog the X-axis a few times back and forth while looking at the parallel monitor. You should be able to jog the X and Y axis by hitting the arrow keys on your keyboard, but if you hit the Tab button, you can bring up a jogging sub-screen that will let you jog it with the mouse. Note the location and colors of the pins on the top right corner of the array (pins 1 through 7) and how they change when you change direction. Note that pins 3, 5 and 7 will change from Lo to Hi when you alternate directions.

Red = Hi Signal (2.4 - 5.0 Volts)
Green = Lo Signal (0.0 - 0.8 Volts)

6. Confirm these values by testing the parallel port connection in back of your PC. You will need to look closely to find the pin numbers on your port because they are printed very small, but they should be back there. Insert the black probe into the #1 Pin (should be Lo) and probe each successive pin (2-7) with the red probe. Do the voltages correspond to the values being reported by the parallel port monitor? In my case, the Lo signal was 0.0 - 0.1 Volts and the hi signal was 3.3 Volts. Change directions a few times to confirm. If not, your problem lies before the parallel port output from your PC.

7. Now connect the parallel port cable to the back of your PC *but not your breakout board yet*. Re-test the voltages at the end of the cable the same way you tested them in back of the PC. It will be a bit trickier this time because you have to contact the pins instead of letting the probe be held in the holes, but it's manageable. Are you getting the appropriate voltage readings? If not, you might have a bad/wrong cable.

8. Now you can plug the parallel cable into the breakout board again and plug in the breakout board and driver power supplies -- there should be LED lights lit up on every component. You will notice that Mach 3 will go into EStop mode because you now have a hi signal going to the PC, so go back into Config/Ports and Pins/Input Signals/EStop and toggle off "Active Low". Hit the reset button and try jogging the X-axis a few times. If nothing happens, move onto the next step.

9. Check the power-supply wiring to the breakout board. Is the light on? If not you might have your circuit reversed. Is there a loop running from the 5V power supply to the "EN" pin on the board? If not your board is not engaged. Test it by placing the red probe on the 5V pin and black probe on the #2-7 output pins. If your board is engaged properly, the Hi signal output should be about 5.5 Volts (note the increase in voltage). If it is not engaged, it will be running about 1.5 Volts on each pin.

While this is by no means a comprehensive trouble-shooting guide, it should help you isolate any issues you might be having in your system and hopefully get you started a little sooner.

Good luck!