Re: [Emc-users] Filters

2010-12-05 Thread Erik Christiansen
On Sun, Dec 05, 2010 at 05:06:16PM -0500, Dave wrote: > That's simple! :-) Dave, please be aware that the first circuit at: http://www.rmcybernetics.com/projects/DIY_Devices/homemade_ignition_coil_driver.htm is seriously oversimplified. If a 2N3055 is used, as shown, the 100v collector breakdo

Re: [Emc-users] Filters

2010-12-05 Thread Dave
That's simple! :-) Thanks, Dave On 12/5/2010 2:01 PM, Kirk Wallace wrote: > On Sun, 2010-12-05 at 13:25 -0500, Dave wrote: > >> Kirk, >> >> Did you build the ignitor control box (white plastic) or did you buy that. >> >> I could use one of those. >> >> Dave >> > It's just a common lig

Re: [Emc-users] Following errors in cold weather???

2010-12-05 Thread Thomas Powderly
Igor, if your system was tuned well enough to fight you when you tried to move the screws by hand, it's strong enough to overcome oil stiction. i'd think cold weather = bad connections, like an analog command to an amplifier going thru a bad contact... but i dont know if you have a digital command

[Emc-users] Teach mode?

2010-12-05 Thread Colin K
Is there a way to record a series of entirely manual (not MDI) moves for playback as a program? -- What happens now with your Lotus Notes apps - do you make another costly upgrade, or settle for being marooned without prod

Re: [Emc-users] Filters

2010-12-05 Thread Kirk Wallace
On Sun, 2010-12-05 at 13:25 -0500, Dave wrote: > Kirk, > > Did you build the ignitor control box (white plastic) or did you buy that. > > I could use one of those. > > Dave It's just a common light dimmer. http://www.wallacecompany.com/machine_shop/Ignitor/ignitor_drawing-1a.png http://www.cas

Re: [Emc-users] Filters

2010-12-05 Thread Dave
Kirk, Did you build the ignitor control box (white plastic) or did you buy that. I could use one of those. Dave On 12/5/2010 12:26 PM, Kirk Wallace wrote: > Just in case. > > http://www.surplusshed.com/pages/item/r3487p.html > http://www.surplusshed.com/pages/item/r3488p.html > > I have used s

Re: [Emc-users] Filters

2010-12-05 Thread Kirk Wallace
On Sun, 2010-12-05 at 11:35 -0600, Igor Chudov wrote: > Kirk, do you use them on the output of the VFD or the input? Input only, but this is due to my melting the filters on my HNC. http://www.wallacecompany.com/cnc_lathe/HNC/00024-1a.jpg http://www.wallacecompany.com/cnc_lathe/HNC/ The origina

Re: [Emc-users] Filters

2010-12-05 Thread Igor Chudov
Kirk, do you use them on the output of the VFD or the input? On Sun, Dec 5, 2010 at 11:26 AM, Kirk Wallace wrote: > Just in case. > > http://www.surplusshed.com/pages/item/r3487p.html > http://www.surplusshed.com/pages/item/r3488p.html > > I have used similar filters on VFD's to solve encoder pro

[Emc-users] Filters

2010-12-05 Thread Kirk Wallace
Just in case. http://www.surplusshed.com/pages/item/r3487p.html http://www.surplusshed.com/pages/item/r3488p.html I have used similar filters on VFD's to solve encoder problems. I built this ignitor recently: http://wallacecompany.com/machine_shop/Ignitor/ and the shop stereo would stop worki

Re: [Emc-users] Can EMC2/HAL access the Computer Clock for period and rate calculations?

2010-12-05 Thread Jeff Epler
I'm not sure what level you're thinking about when you ask this question. If you're thinking in high-level terms like how to connect existing components, you can use pid to control a velocity simply by making its command and feedback be velocities instead of positions. If you're thinking in low

Re: [Emc-users] Watchdog Sizing

2010-12-05 Thread Slavko Kocjancic
S, Erik Christiansen piše: > On Sun, Dec 05, 2010 at 01:40:58AM -0800, Kirk Wallace wrote: >> On Sun, 2010-12-05 at 09:44 +0200, Slavko Kocjancic wrote: >> ... snip >>> That's funn... If you already have watchdog (hardware) to keep ATtiny >>> RESET good why do you need that MCU at all?!? Seems nons

[Emc-users] M53/54/55 Addition to EMCTask?

2010-12-05 Thread Ted Hyde
Hi all- I've been working on getting the live tool system working on my lathe and am curious if it is at all possible (for me) to add interpretation of M53/M54/M55 to EMCTask, to activate "new" pins {motion.livespindle-forward, motion.livespindle-reverse, motion.livespindle.on} - which are equival

Re: [Emc-users] Watchdog Sizing

2010-12-05 Thread Erik Christiansen
On Sun, Dec 05, 2010 at 01:40:58AM -0800, Kirk Wallace wrote: > On Sun, 2010-12-05 at 09:44 +0200, Slavko Kocjancic wrote: > ... snip > > That's funn... If you already have watchdog (hardware) to keep ATtiny > > RESET good why do you need that MCU at all?!? Seems nonsense for me. > > I think beca

Re: [Emc-users] Watchdog Sizing

2010-12-05 Thread Kirk Wallace
On Sun, 2010-12-05 at 09:44 +0200, Slavko Kocjancic wrote: ... snip > That's funn... If you already have watchdog (hardware) to keep ATtiny > RESET good why do you need that MCU at all?!? Seems nonsense for me. I think because the MCU is used to validate EMC2 before powering up the dangerous bits

Re: [Emc-users] Watchdog Sizing

2010-12-05 Thread Slavko Kocjancic
S, Erik Christiansen piše: > On Sat, Dec 04, 2010 at 09:04:54AM -0800, Kirk Wallace wrote: >> Then I got to thinking about what Slavko mentioned previously, >> about this is a safety device and I should think in terms of how it >> could fail. > So long as the microcontroller's on-board watchdog is