I am in a sharing mood - LINK
idbruce
Posts: 6,197
For all you Eagle, stepper motor, and CNC fans, here is a link for you:
http://www.cuteminds.com/index.php/en/repository
You may also want to visit their homepage and browse the site.
Bruce
http://www.cuteminds.com/index.php/en/repository
You may also want to visit their homepage and browse the site.
Bruce
Comments
You're welcome. I thought this thread would get a little more attention, because in my opinion, there is definitely some stuff there that deserves some serious study.
I came across this site, because for the last three years, I have been scouring the internet for high current bipolar stepper drivers constructed from MOSFETS, and this site turned up on my latest search.
I have not had a chance to study it just yet, but this is the circuitry that I will be studying, and perhaps it may be of interest to you. The description can be found here:
http://www.cuteminds.com/index.php/en/mosfetfull
And the actual board and schematic files can be found here:
http://www.cuteminds.com/index.php/en/repository/file/74-fulldriver
Bruce
Most of my work involves lasers, monochromator, and other linear movements of small masses. They require great precision and smaller stepper motors are the daily for me. Lately I have began to broaden my horizon and so I am testing out higher current devices.
That circuit is as simple as it gets how is it working out for you? Speed issues?
I am going to give you the long answer and share a vision with you. My intent is to create a twofold business, design, build, and sell small machinery, and sell products manufactured from the small machinery that I produce. After struggling with making my own stepper drivers (motors overheating, releasing magic smoke, etc...) (see pic below) with the CNC spring bender, I decided to just purchase my drivers to resolve my problems so that I could move forward. Most of the motors used on the wire bending CNC are NEMA 23s, and while wired in bipolar fashion, those motors draw 2.83A per phase. I eventually gave up my struggle with the drivers and purchased (12) G251X Microstepping drives from Gecko Drive, however I will not do this for all my machines.
I am currently in the process of building another CNC machine which will be a PCB Drilling And Laser Direct Imaging Machine, which can be found here: http://forums.parallax.com/showthread.php?140318-The-Official-Propeller-Driven-CNC-PCB-Drilling-And-Laser-Direct-Imaging-Machine. I currently have the process down pat for exposing and developing circuit boards, but I also currently have no means to quickly drill them or do the through hole plating, hence the new machine for drilling. When I get that machine done, I will conquer the through hole plating issue. My very first set of PCB boards to be created will be a wide variety of stepper drivers and Propeller boards to operate new machinery.
The circuit that I linked to, is just the result of searches performed for high current stepper drivers. There are many NEMA 34s in the world, and I want to be able to drive them without paying a fortune, and I believe that circuit should help get me on track. In addition to creating my own stepper drivers, I also want to sell and market them, as well as other boards and kits, but of course, this will require more PCB drilling machines, and hence more stepper drivers.
As it stands now, I am in a financial crunch to really be productive, but that could change very soon, because a large corporation is now evaluating one of the patents that I wrote, which can be found here: http://forums.parallax.com/showthread.php?137210-Bragging-Rights!!!-The-Wire-Bending-CNC-and-the-Patent-Application.
It is only my opinion, but I think you and I would make a great team. We both have the entreprenuerial spirit, we both have creative minds, and we both have the desire to succeed. As said previously, its an open door.
Bruce