Technological Arts Inc.

Product Info

• 3 separate channels (for bi-polar stepper motors)
• up to 2 Amps per channel (with adequate heatsinking)
• based on the L297D chopper stepper motor driver and L298 dual H-bridge chipset
• set motor current independently via trimpot for each channel
• H-bridge packages mounted along board edge for easy heatsinking
• accommodates two limit switch inputs per channel (six total)
• includes on-board 5V regulator
• 3.25" (82.5mm) x 3.25" (82.5mm) x 1.0" (25.4mm) high
• control it from your PC, via included Parallel Port Interface (PPI) adapter

Product Details

Parallel Port Interface Features:

* interfaces the 3-Axis Stepper Driver board to your PC's parallel port using a standard (user-supplied) DB25 extension cable
* has on-board 5V regulator (you supply external unregulated DC of 9 to 12V at 0.5A)
* you supply appropriate motor voltage to the driver board
* information and PC driver shareware for implementing a CNC machine available here
* DeskNC for DOS and other useful software are available here
* for a hands-on project, refer to the four-part CNC article in Nuts & Volts magazine (starting with the May 99 issue). Back-issues can be ordered here

Looking for stepper motors or CNC hardware? Here are some sources:

• www.jameco.com
• Surplustraders.net
• www.circuitspecialists.com