Kirk Wallace <kwall...@wallacecompany.com> writes: >It may be that an Arduino could do this, but my impression is that there >aren't enough AVR pins coming out to where one could get to them. The >price of the smaller Arduino's seems to fit my plan though.
The RepRap and MakerBot use a different AVR chip that has a dozen more GPIO pins (search for "sanguino"), but is still cheaper than the Arduino "mega" (which has a whole lot of pins). Colin Kingsbury <ckingsb...@gmail.com> writes: >The GRBL project (which I think is a one-man show) made an Arduino-based >machine controller (albeit using native AVR code) that not only generates >steps but actually interprets g-code with a single board. The PC is >basically just a tape drive, drip-feeding gcode. This approach seems silly >to me, kind of like pushing your car down the street rather than using the >motor... His motivation was to be able to use his regular laptop (which lacks a parallel port), instead of having to keep a "hulking giant" obsolete PC around just to run the machine. Note that the smaller desktop-sized CNC machines aren't much bigger than a traditional desktop PC, so eliminating the extra PC reduces the footprint quite a bit. And a lot of people use laptops exclusively these days, so they don't have old desktop machines laying around. I've thought about modifying his code to read the g-code off an SD card, eliminating the PC entirely. Unfortunately I have several other projects that I need to finish first. ------------------------------------------------------------------------------ Protect Your Site and Customers from Malware Attacks Learn about various malware tactics and how to avoid them. Understand malware threats, the impact they can have on your business, and how you can protect your company and customers by using code signing. http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
