perhaps take a look at what the hexapod guys are doing, They seem to use hobby servos with EMC.
Anders Wallin wrote: > R/C Servos take a digital pulse input at around 50 (or 100?) Hz. > The width of the pulse determines the position of the servo. > A width of 1.5 ms is the central position, and 1.0 ms is full left (for > example), while 2.0 ms is full right. > > if you have digital I/O connected to EMC (parallel port or a pci-card) > and a machine that can run with a base_period of 25us that would mean > around 40 base_period's for the full range of motion of the servo. > Do you need more resolution? Some machines may be able to run with a > shorter base_period. > > There might be an existing PWM HAL component you can use to produce this > output, but it's not hard to code your own if you need to. > > Anders > > > >> Hi, >> >> I am planning to build a robot arm which holds a driller. (it means 6dof >> afaik) >> >> Is there a way to write a configuration to control 3 std. R/C servos >> directly? Where do I have to look? The way which seems easy to me is >> burning a PIC interface prog which takes parport information and >> emulates stepper motors. Is there a direct way? As you can imagine it >> will reduce operation speed of machine too much. >> >> Thanks >> > > > ------------------------------------------------------------------------------ > Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT > is a gathering of tech-side developers & brand creativity professionals. Meet > the minds behind Google Creative Lab, Visual Complexity, Processing, & > iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian > Group, R/GA, & Big Spaceship. http://www.creativitycat.com > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers & brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, & iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian Group, R/GA, & Big Spaceship. http://www.creativitycat.com _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
