Re: [Emc-users] Crackling motors using Beaglebone

2014-02-23 Thread jrmitchellj .
You might try hanging a current probe on the output of the Gecko to see if it is switching between run current mode and standby current mode when the direction line is being toggled. It shouldn't cause any harm, just more power used. Ray --J. Ray Mitchell Jr. jrmitche...@gmail.com (818)324-7573

Re: [Emc-users] Preferred sensors for Mesa cards, NPN or PNP?

2014-02-23 Thread Sven Wesley
2014-02-22 15:52 GMT+01:00 Peter C. Wallace p...@mesanet.com: for sinking inputs (like 7I70,7I76,7i77,7I84 field inputs) The best is NC PNP type. These will fail open (= limit) with short to ground or open wire faults Peter Wallace Mesa Electronics Dammit, I've already ordered NPN NC,

Re: [Emc-users] Crackling motors using Beaglebone

2014-02-23 Thread Mark Tucker
Ray As far as i know i have Standby Disabled on the gecko,but i will check On 23/02/14 15:07, jrmitchellj . wrote: You might try hanging a current probe on the output of the Gecko to see if it is switching between run current mode and standby current mode when the direction line is being

Re: [Emc-users] BBB variable voltage output for spindle speed

2014-02-23 Thread Jared Turner
So I think I have the hardware setup - but now I'm confused on how to actually setup PWM to control an axis. I noticed that the .hal file has some PWM instances at the bottom, but they seem to be set for heaters. Should repurpose one of these or create a new one? How do I create a new one,

Re: [Emc-users] Preferred sensors for Mesa cards, NPN or PNP?

2014-02-23 Thread Peter C. Wallace
On Sun, 23 Feb 2014, Sven Wesley wrote: Date: Sun, 23 Feb 2014 17:03:11 +0100 From: Sven Wesley svenne.d...@gmail.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re:

Re: [Emc-users] BBB variable voltage output for spindle speed

2014-02-23 Thread Charles Steinkuehler
On 2/23/2014 2:38 PM, Jared Turner wrote: So I think I have the hardware setup - but now I'm confused on how to actually setup PWM to control an axis. I noticed that the .hal file has some PWM instances at the bottom, but they seem to be set for heaters. Should repurpose one of these or create

Re: [Emc-users] Knee mill conversion - Z axis questions

2014-02-23 Thread dave
On Fri, 2014-02-21 at 12:16 -0500, Dave Cole wrote: On 2/21/2014 12:01 PM, dave wrote: On Wed, 2014-02-19 at 21:26 +, Steve Blackmore wrote: On Tue, 18 Feb 2014 20:59:08 -0500, you wrote: Hi all; may be off topic, but am wondering about converting my Centec 2B mill to CNC. X,Y axes

Re: [Emc-users] Knee mill conversion - Z axis questions

2014-02-23 Thread dave
On Fri, 2014-02-21 at 19:23 +0100, Andy Pugh wrote: On 19 Feb 2014, at 22:40, John Alexander Stewart ivatt...@gmail.com wrote: Hmmm. The Centec is in the basement, and I do like it, and my wife likes the retro feel. Hmmm Old iron beats new iron a lot of the time. My Harrison

Re: [Emc-users] Preferred sensors for Mesa cards, NPN or PNP?

2014-02-23 Thread Sven Wesley
2014-02-23 21:49 GMT+01:00 Peter C. Wallace p...@mesanet.com: You can use NPN Proximity switches with the 7I77 but it requires external pullup resistors (say 2K 1W) I know, but the sensors are too cheap to make a special design for the cards that are fine with PNP's. I rather take the cost