Re: [Emc-users] about to give up on the pi's

Has anyone tried an (Intel) Edison yet? It's an x86 machine, and comes in at $100 if you add the arduino-pinout carrier board to give you all the I/O pins: https://www.sparkfun.com/products/13097 On Thu, May 4, 2017 at 2:38 PM, Gene Heskett wrote: > On Thursday 04 May

Re: [Emc-users] Need recommendation on encoder cable --> Ethernet cable?

What I'm trying to say is that when you say "ethernet cable", most people mean UTP, unshielded twisted pair, generally rated CAT-5 or CAT-6 these days. Most ethernet patch cords are UTP. You can get the same thing in a shielded version as well, which you may find you want:

Re: [Emc-users] Need recommendation on encoder cable --> Ethernet cable?

...and for encoder cables, you may want shielded twisted pair (has a foil layer under the jacket). I've had issues with unshielded twisted pair picking up motor EMF and adding extra encoder counts. ;-) On Mon, Oct 17, 2016 at 10:45 AM, Chris Albertson wrote: > But

Re: [Emc-users] Clone a HD

John, you're right about booting from the live CD. You usually don't want to use dd to copy from a mounted (live) filesystem; since it operates at a block level, any write activity on the source drive during the copy is likely to produce a corrupt copy. When doing what you want to do, I usually

Re: [Emc-users] Clone a HD

Argh. Got the mkdir's wrong. Here's a corrected version, no guarantees etc.: Assuming sdc is the source drive and sdd is the destination: > > cfdisk /dev/sdd # make a big Linux partition called sdd1, and a swap > partition roughly 2x RAM size called sdd2 > mkfs.ext4 /dev/sdd1 # format sdd1

Re: [Emc-users] Clone a HD

# check it ...assuming that after you've booted the new drive in the new machine it came up as /dev/sda rather than /dev/sdd, of course. I'm probably giving you just enough info here to be dangerous. ;-) Steve On Sat, Feb 20, 2016 at 11:05 AM, Steve Traugott <stev...@t7a.org> wrote: > A

Re: [Emc-users] Micro-switch repeatability

I also remember someone, could have been at reprap.org or cncrouterparts.com, doing repeatability tests, and getting similar surprisingly consistent results with cheap switches. On Mon, Feb 15, 2016 at 5:04 PM, Len Shelton wrote: > We don't use levers, we activate the

Re: [Emc-users] Well, thats the end of aliexpress.com for me

Interesting. My wife and I run an electronics manufacturing business. We tend to prefer mouser *because* their parametric search works so well -- I've always thought it was better than Digikey's. I think it probably comes down to getting the hang of a particular web site's parametric search.

Re: [Emc-users] VFD Tweaking

Here's a better VFD/motor matching overview, with a pretty picture of what's going on (scroll down until you get to the schematic showing the three output PWM waves): http://www.franklin-controls.com/pump/blog/motors/ On Thu, Jan 7, 2016 at 5:29 PM, Steve Traugott <stev...@t7a.org>

Re: [Emc-users] VFD Tweaking

On Thu, Jan 7, 2016 at 5:14 PM, Brian Morel wrote: > As far as the current issue, you need to be careful using old motors with > a vfd. The insulation ratings of the older motors were not designed to > handle the voltage spikes that can occur with running motors fairly >

Re: [Emc-users] debris collection

For a muffler, loosely stuff some random open-cell foam rubber scraps into a 5-gallon bucket. Attach an outlet hose to the vacuum and stick the other end into your bucket full of foam rubber. Works surprisingly well relative to the time invested. In the case of the bucket max, it also might