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16-05-2009 #1
Hey guys check these out:
This board allows you to control one stepper motor, as well as receive input from two limit switches. It is based around the Allegro A3982 Stepper Motor Driver with Translator. The A3982 is capable of driving up to 2A per coil. This board was designed to improve upon and replace the v1.x series of stepper drivers which are based upon the venerable L297/L298 stepper drivers. The A3982 offers a number of improvements:
- Only one chip to solder, as opposed to the two chip L297/L298 combo
- Superior DMOS technology (no heatsink required!)
- Built-in diodes and synchronous rectification (no large diode array!)
- Much cheaper and smaller than the L297/L298 (about $10 cheaper, total!)
The board is very easy to put together, even for a beginner. Using a technique such as solder paste + hot plate, the board becomes ridiculously easy to solder. I found that it is much easier to solder SMT boards in this fashion than to solder pin after pin manually with through-hole components.
There is loads of information about these drivers over on: Reprap.org
You can get the full driver in a kit for $20 !
Full Kit
Raw Components
Files
You can download the release file from SourceForge that has a bunch of helpful files for this board. It contains:
- GERBER files for getting it manufactured
- PDF files of the schematic, copper layers, and silkscreen
- Eagle source files for modification
- 3D rendered image as well as POVRay scene file
- exerciser code to test your board.
What do you think, it was the cost that was attractive to me ?.Me
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