Small homes (and curves in gen)

Re: Small homes (and curves in gen)

NewPerfection — Sat, 18 Aug 2012 20:05:32 -0400

anode505 Wrote:
-------------------------------------------------------
> Is this normal for re-flashing?
> I need to unplug the USB and power cylce the board
> to get the software to upload the new firmware.
> If I do just one of those, no-go. (dang, I
> struggled over that one for a stretched :) )

If the board doesn't auto-reset (I'm not sure if Gen6 does) then it's normal. If it has a reset button you can push that as soon as the Arduino IDE says "Done Compiling" as well.

Re: Small homes (and curves in gen)

anode505 — Sat, 18 Aug 2012 20:03:40 -0400

Ok will up the baud. I gotta tweak the axis anyways.
Is this normal for re-flashing?
I need to unplug the USB and power cylce the board to get the software to upload the new firmware. If I do just one of those, no-go. (dang, I struggled over that one for a stretched :) )

Re: Small homes (and curves in gen)

NewPerfection — Sat, 18 Aug 2012 19:59:29 -0400

As Polygonhell said, you need to increase the baud rate. 115200 should be fast enough to avoid the pauses you are getting, even with very short segments. 38k won't cut it.

Re: Small homes (and curves in gen)

Polygonhell — Sat, 18 Aug 2012 19:54:02 -0400

38K is very low, most people run at either 250K or 115200.
You need recompile the firmware to change it

Re: Small homes (and curves in gen)

anode505 — Sat, 18 Aug 2012 19:48:44 -0400

AH! Missed that small perimeter speed. Gosta play. :) thanks

Whats the 'cut-off' to be 'small perimeter/?

(Baud is the standard 38K for this firmware. I try not to mess too much with it. I'm PIC man, not audrino )

Re: Small homes (and curves in gen)

Polygonhell — Sat, 18 Aug 2012 18:41:55 -0400

Two thing can make slic3r slow things down dramatically, you're small perimeter speed and the minimum layer time.
The stopping is a problem with the firmwares buffer running our of print commands, this is a function of the serial connection between sprinter and pronterface. If the baud rate is too high, you can get a lot of errors and see this happen, it also happens if it's not high enough.

Re: Small homes (and curves in gen)

NewPerfection — Sat, 18 Aug 2012 17:30:04 -0400

What do you have the baud rate set at?

Small homes (and curves in gen)

anode505 — Sat, 18 Aug 2012 17:20:10 -0400

(Prusa, Gen 6-Sprinter, Ponterface/Splic3r)

I've found the machine does some random (when and how long) micro-pauses when doing curves/radius.
This normal? I find it hard (but not impossible) to believe its a PC->Gen6 coms prob.

Alos on small holes/radius, < 4mm Dia, it goes so slow it goobers up. I've kludged a fix of just making them square holes. The 2mm holes come out pretty much round, and just a quick clean up with a drill bit (I do that with most all holes anyways)

So, my big question is why does the feed rate drop so much on a radius? And can I adjust the extruder rate during a radius?

I might go back to SFACT and se if that does any better. But I think its in the firmware.