一个 usb cnc 控制器, 大家来做吧
http://rc.cis.si/projects/cnc_motion/CNC motion controller is a link between personal computer and drivers for stepper motors. It uses USB port which is available on all modern computers and laptops. This is a complete (software/hardware) solution and it does NOT require any additional software (Mach3 is NOT needed).
USB CNC controller is compatible with most step/dir drivers. It has the same pinout as popular PICStep and PMinMO drivers. It can be used as direct replacement for many parallel port break-out boards. Finished and ready to use controllers are available in my little shop. There is also a DIY version if you want to build one yourself.
I use this controller to drive my CNC hot wire foam cutter and three axes CNC machine which I'm building.
I appreciate your interest in my software and my work. If you are using software just to visualize G-code or simulate toolpath and you like it, donations are welcome. 网站上面有详细的电路图,原理图 firmware 等 这个很好 明显上位机不是MACH，并且他提供的上位机软件是要“许可”的，就是用钱买上位机软件，可以自己做硬件！ 已经破啦
自己搜一搜 有卖。 呵，是的
我已经买了一块，今天在我的破JJ上跑了一下，
软件 还是满舒服的，能模拟，能显示 加工时间，路径长度。
当然没有MACH那么专业。
性能不知道如何 测量或体现？
板上就一颗PIC18F4550
下面是基础的原理图，
点击此处下载 ourdev_592537TY0E88.pdf(文件大小:62K) (原文件名:schematicsV10.pdf)
http://cache.amobbs.com/bbs_upload782111/files_34/ourdev_592538O0AAT7.JPG
(原文件名:IMG_0985.JPG) 就我这个不专业的人用用，感觉比MACH方便。
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