tomp wrote: > > i dont think firewire card is rare or expensive > siig syba & other mfctrs > tiger direct 20$ > mirco center 20$ > newegg 12.99$ > so not rare > and not expensive > more important, it already works realtime linux rtai for motion control > > OK, they have REALLY come down, I haven't looked at FireWire in a long time. It was actually declared "dead" several years ago, but the users wouldn't allow it. But, there are these REALLY cheap USB- and Ethernet-enabled CPU chips and CPU-less USB target device chips that could be used (if suitable) to control some other motion hardware. Using one of the USB FIFO chips to send out step pulses sounds like it might actually be pretty easy. (Note the "might"!)
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