Re: [Emc-users] rtai on 12.04 Ubuntu

Ah! Might change and probably will. Murphy and all his cousins are alive and well. Thanks for the comment. However, I update very sparselystill running on a 1200 Duron and 2.5? Clearly time to upgrade. ;-) My goal is to consistently make chips. Dave On 01/05/2017 05:15 PM, Kurt Jacobson

Re: [Emc-users] EDM machining --> EDM generator signals

Nicklashello the time from voltage turn-on until the voltage dropis the ionization time this can be used as an indication of the gap 'clean'. the idea is that IF the gap is very clean , and constantly clean, each ignition delay time measured will be uniform and will be a 'standard' value for

Re: [Emc-users] rtai on 12.04 Ubuntu

I found out the hard way that it is not a good idea to select the kernel numerically (e.g. GRUB_DEFAULT="2>3") since if another kernel is added (by an update?) the order might change. I now use the string method as below exclusively and have not had any surprises since. GRUB_DEFAULT="Previous

Re: [Emc-users] corcom's site a blank, no data on any of their filters

On Thursday 05 January 2017 15:39:12 Ken Strauss wrote: > I sent you a data sheet. Got it, confirms my suspicion that these filters are losing their effectiveness by the time we get to ths spi bus's speed of 32 megabaud. They aren't anywhere near a brick wall at 30 MHz. Usefull It think, but

Re: [Emc-users] rtai on 12.04 Ubuntu

2017-01-05 22:32 GMT+02:00 dave : > With some help from Kent this turns out to be not too onerous. > > Boot your system and on the boot menu note which kernel you want ( by > number ) starting with 0. > Ditto if you are in the alternate menu. > > #modify /etc/default/grub >

Re: [Emc-users] rtai on 12.04 Ubuntu

I found out the hard way that it is not a good idea to select the kernel numerically (e.g. GRUB_DEFAULT="2>3") since if another kernel is added (by an update?) the order might change. I now use the string method as below exclusively and have not had any surprises since. GRUB_DEFAULT="Previous

Re: [Emc-users] EDM machining --> EDM generator signals

I am thinking about the ionization and sparc counters. These counters might be useful to calculate how well the process work and maybe adjust parameters? On Mon, 2 Jan 2017 23:53:55 +0700 TJoseph Powderly wrote: > Hello > video of early iteration of edm panel in use >

Re: [Emc-users] EDM machining --> EDM generator signals --> Protocol

Not yet I am still thinking. CANopen is used on CAN but I have also seen implementation over Ethernet and guess same packet could be routed to serial or SPI. CANopen protocol is attractive because it have simple PDO for real time data and SDO for dictionary with parameters. What I want is a

Re: [Emc-users] corcom's site a blank, no data on any of their filters

I sent you a data sheet. > -Original Message- > From: Gene Heskett [mailto:ghesk...@shentel.net] > Sent: Thursday, January 05, 2017 3:20 PM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] corcom's site a blank, no data on any of their filters > > Greetings folks; > > Does

Re: [Emc-users] question on emi filters

On Thursday 05 January 2017 13:08:54 Jon Elson wrote: > On 01/04/2017 10:07 PM, Gene Heskett wrote: > > I can't think of a thing in that whole kit that would be > > switching at 335 KHz. Except the regulator in the pi's > > power input. > > Trust nothing. A lesson I am expensively learning. >

Re: [Emc-users] rtai on 12.04 Ubuntu

With some help from Kent this turns out to be not too onerous. Boot your system and on the boot menu note which kernel you want ( by number ) starting with 0. Ditto if you are in the alternate menu. #modify /etc/default/grub $cd /etc/default sudo vim grub change GRUB_DEFAULT=0 to

[Emc-users] corcom's site a blank, no data on any of their filters

Greetings folks; Does anyibe know where I can find data, loss vs frequency graphs etc, for a Corcom 20VSK6 line filter? I now have 2 of them warming up. Thanks all. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in

Re: [Emc-users] question on emi filters

On 01/04/2017 10:07 PM, Gene Heskett wrote: > I can't think of a thing in that whole kit that would be > switching at 335 KHz. Except the regulator in the pi's > power input. Trust nothing. LCD monitors, especially with CCFL backlight, are huge noise sources. Take a small coil (solenoid type,

Re: [Emc-users] Inverting the PWM signal to mesa 7i78

Thanks again Andy. It worked. Even thought my speed control (mc-60) is cheap and low-tech, I am able to make the speed track better than +/- 5% from 20 to 1200 rpm under reasonable thread cutting loads. That ain't bad for recycled junk. This exercise with the 5i25 and 7i78 has forced me