I've done a bit of programming and circuit board design with Silicon
Laboratories 8051 chips. They have an ethernet developers kit complete
with schematics.
http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/en/EthernetDK.htm
I have not priced the components, but a board should cost less than $20
each.
Jon Elson wrote:
Kirk Wallace wrote:
Okay, now I know. Thanks. I'm looking forward to seeing what happens
with this.
Don't hold your breath, I am still not too clear on whether this
will work without massive modification of EMC2, and how it uses
rtai.
I have been thinking, that it would be nice to move some of the encoder
intelligence out to the encoder itself. This could off-load some of the
computing from the PC, make it easier to have a real absolute encoder or
maybe simulate it, have velocity and acceleration available, maybe even
handle home, limit switches and local I/O. Ethernet could be pretty
handy for this, I would guess.
Ethernet-enabled microcontrollers are certainly coming down in
cost, but I'm not sure putting one in each encoder is sensible
(yet).
Jon
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