On Thu, Jul 23, 2020 at 3:25 PM John Dammeyer <[email protected]> wrote: > > > > > > Is the 7i92 less expensive? Do we even know the price of this USB->DB25 > > > device? > > > > > > > $65 + $25 shipping to the US. Given the shipping cost of the 7i92 > > plus the cost of the cable needed it is less expensive. > > Not true I think. 2x $65 plus perhaps still $25 shipping to the US since the > 7i92H has two ports. At that price point there are other MESA/PICO > solutions that also have a break out board so now you have to factor that > into the price too. > > And it's still USB. Can it handle a 2500 line quadrature encoder? The > control is the small part of the overall CNC conversion. I found that buying > the CNC Cape for the BeagleBone which all around seemed like the lowest > entry cost ultimately wasn't cheaper and it's sitting in a box. > > John > >
For my purposes I don't need two ports or the ability to read an encoder. One port is enough. I am driving four steppers and reading a few home switches. This guy is claiming 150 kHz so way faster than I need for 3200 microsteps per inch at 3 ips. Dave _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
