[Emc-users] FPGA dev board for Beaglebone

Anyone who reads hackaday will see this but thought the people using the Beaglebone for linuxcnc may be interested. http://www.kickstarter.com/projects/1575992013/logi-fpga-development-board-for-raspberry-pi-beagl Brian ---

Re: [Emc-users] Isel Davinci G-code

On Wednesday 18 December 2013 23:18:21 ad...@mmri.us did opine: > I have a small Davinci CNC that I bought years ago for prototyping, but > never used as my larger CNC gets all the work. > > On Page 47 and 48 of the manual in the link below, it describes the > Gcode for Arcs. > My machine cuts a

[Emc-users] Isel Davinci G-code

I have a small Davinci CNC that I bought years ago for prototyping, but never used as my larger CNC gets all the work. On Page 47 and 48 of the manual in the link below, it describes the Gcode for Arcs. My machine cuts arcs in the X-Y plane but will not move e.g. in an arc whenever the Z-axis

Re: [Emc-users] "Slow" G code (sam sokolik)

running it as fast as it could go - feedrate set to way more than the config would allow (config is 500ipm 30in/sec^2) While the penguin - (metric so .1 is about .004") parabolic blend (old)P.1=2:21 Strait G64=4:12 circular blend (new) P.1=1:41 Strait G64=2:27 this was from a wh

[Emc-users] Ramped feed rate.

 (Ok here I am mumbling into a microphone before the crowd... )   But going way, way, way back ( Picture in your minds eye teletypes and paper tape programs...) I had always wanted a ramped feed rate command.   Like   G1 X1. Z-.25 F20. ( ramp command) X4. Z-1. F5.   So that the move from X1. Z-.25

Re: [Emc-users] "Slow" G code (sam sokolik)

Hey Sam;   How does it the improved look ahead compare on the "chips" 3d NGC sample file?   Greg -- Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how a

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

On 18 December 2013 19:07, Kirk Wallace wrote: > > I noticed your sensors don't have matching sensor planes? > http://wallacecompany.com/tmp/image2826.pn > g Indeed not. In fact all three are in different planes. The top ones wrap around a bevel gear

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

On 12/18/2013 09:11 AM, andy pugh wrote: > On 18 December 2013 16:55, Kirk Wallace wrote: > >> The >> installations I have seen so far just bed them in a glob of glue. I was >> hoping to use a more formal method. > > Mine are slotted into bores in an aluminium plate, but glue was still > involved

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

On 12/18/2013 10:55 AM, Kirk Wallace wrote: > On 12/17/2013 09:35 PM, Jon Elson wrote: > > ... snip >> If the gear is steel, you could use the trick I used: >> http://pico-systems.com/bridge_spindle.html > ... snip > > I ordered a batch of these Avago sensors, and now that I have them in > hand it

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

I like all the ideas and suggestions here. Many thanks to all who responded. I think I'll try these automotive gear tooth sensors, and see how that works, Digikey.ca has them available, so I can order them fairly locally. Just FYI, I do like the Acetal nut idea, will try that before going ball-sc

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

On 18 December 2013 16:55, Kirk Wallace wrote: > The > installations I have seen so far just bed them in a glob of glue. I was > hoping to use a more formal method. Mine are slotted into bores in an aluminium plate, but glue was still involved: https://picasaweb.google.com/lh/photo/pyvsRqIQpQalC

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

On 12/17/2013 09:35 PM, Jon Elson wrote: ... snip > If the gear is steel, you could use the trick I used: > http://pico-systems.com/bridge_spindle.html ... snip I ordered a batch of these Avago sensors, and now that I have them in hand it looks like they are not the easiest sensors to mount. Th

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

On 18 December 2013 03:37, John Alexander Stewart wrote: > > Was thinking that, while it was off, I could make up a large disk with > holes for the encoder. Would it be better to read off the 40 tooth gear on > the spindle?? To me, in my novice state, I'd think that was not as good, > but... I

Re: [Emc-users] Lathe spindle encoder, Mesa 7i76.

On 18 December 2013 01:11, dave wrote: For the spindle I did something dumb which I will need to fix. Used a > 360 cpr Koyo encoder but geared it (in a moment of dullness) 2:1 so > index pulses are not unique in angular index. > That isn't necessary an impossible problem. If the ratio is exactly

Re: [Emc-users] Servo Following Error

On 18 December 2013 02:29, Jeshua Lacock wrote: > > > It looks like Max Velocity was at the default max (912 in/min) for that > test, but I confirmed it does the same thing with max velocity set way low > like 16 in/min. > > Interesting it would go that fast though because currently the limits I >