Re: [Emc-users] OT Arduino program question.

2010-04-15 Thread Ron Ginger
There is a recently formed Yahoo group called Sherlinearduino for the purpose of designing and building a power feed for Sherline lathes. It is a 'design by committee' project, but there is some interesting discussion. It has only been running a month or so, so there is not much useful work yet

Re: [Emc-users] OT Arduino program question.

2010-04-15 Thread Ian W. Wright
There is some code here which might be useful... http://forums.reprap.org/read.php?13,29815 or here http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?action=print;num=1231909180 Ian Ian W. Wright Sheffield UK -

Re: [Emc-users] OT Arduino program question.

2010-04-14 Thread Andy Pugh
On 14 April 2010 20:49, Greg Bentzinger wrote: > I want to use an Arduino to run the thing, but I have not found much info in > the area of programing accell curves for the step/dir outputs. Have a look in the EMC2 source for the Limit3 HAL module. I think that position goes in, and velocity/ac

Re: [Emc-users] OT Arduino program question.

2010-04-14 Thread Frank Tkalcevic
tten, but it mostly works (changing on the fly is buggy) > -Original Message- > From: Bernhard Kubicek [mailto:bernhard.kubi...@gmail.com] > Sent: Thursday, 15 April 2010 6:21 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] OT Arduino program question. &g

Re: [Emc-users] OT Arduino program question.

2010-04-14 Thread Bernhard Kubicek
I don't do Arduino, I do ATMEGAs with GCC. Anyway, I would try to create a timer interrupt. Before starting the timer, it is possible to set a starting value for the counters. In the interrupt vector routine, one could set each time a new increasing/decreasing starting value, to create ramps. Or

[Emc-users] OT Arduino program question.

2010-04-14 Thread Greg Bentzinger
Hello List; I have a simple machine that needs a single axis control to rotate a crank shaft 220 degrees then back. I plan to use a NEMA 34 stepper and a Gecko for the motion. I will mount large XL pulleys on the crank and use about a 5:1 reduction ratio. Limit at one end of the stroke home at