> What we have is the result of historic accident. EMC and machine control > in general got its start when computers where EXPENSIVE. You design > differently when you parts for five digit price tags than when you parts > are nearly free. If computers cost $2 and two of them could fit on your > thumbnail then you might just be inclined to use more of them.
I remember having arguments with an engineer about using micro-processors (with EPROM) to do simple logic. He was adamant that TTL was a better solution because the processor was too expensive. My point was that processors were coming down in price and there were now single chip ones with EEPROM windows (before onboard flash) and that one chip would do the job of a large number of discrete devices. At the same time I was wire-wrapping up an S-100 board with an NED u7220 (I think that was the number) video controller and the rest of the logic was all 74S series. He was wrong of course. Many projects don't need 20 TTL or CMOS chips and an Arduino is an ideal replacement. But only to a limit. > Combine the high-reduction cycloidic drive with a small low cost BLDC > motor > and you have a point for a robot arm (or leg) or a machine tool axis. > Here is a model of one of these motor and all -- please try the "explode" > button to see the insides of the drive. (The button turns the drawing into > a parts diagram) https://a360.co/2KhamaI > Very cool! > OK back to real-time... ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
