A friend was selling some 200 ounce/inch, 3.5 Amp stepper motors for a great price so I thought it was time to upgrade the taig cnc milling machine. With the old steppers installed, the machine was accurate but slow. Since the old controller couldn’t handle 3.5 amps I decided to upgrade that too. I found a 5 axis controller on ebay for a great price. This controller uses the Toshiba TB6560 stepper driver that can handle up to 36 VDC at 3.5 Amps. I wanted a board with at least 4 axis’ so that I could add a rotary axis to the mill but more about that in another post. I went to the local electronics supplier (Sayal elelctronics) and Parm set me up with a Hammond electronics 24 VAC, 10 Amp transformer (a local manufaturer). I picked up a bridge rectifier, large capacitor, switch, fuse, computer power cord socket and indicator light to complete the power supply. The entire conroller and power suppy were mounted in a computer case.

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Tags: CNC Mill, diy cnc, Karl Williams, robotics, Taig cnc
Posted in Member Blogs | 2 Comments »

The stepper motor controller boards for my CNC router project are based on the L297 controller and L298 H-bridge driver combination. The circuit board design is the same as the schematic shown in the L297 datasheet. To keep the size of the boards small, I decided to make them double sided. I also needed to build a parallel port breakout board so I did that at the same time. The schematic and boards were laid out using EagleCad.

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Tags: cnc, CNC Router, Karl Williams
Posted in Member Blogs | 14 Comments »