On 12 June 2012 16:10, Joachim Franek joachim.fra...@pibf.de wrote:
1. USB
Assume I attach a spi device to ftdi and
have a userspace non rt program which
can read/write to the device.
What do you suggest to exchange data with hal
for not really time critical data (like this case
of
On 06/11/2012 11:56 PM, Jeshua Lacock wrote:
But that is also a 15V part IIRC. But that's ok - the only reason the
Makerbot uses a PC power supply is because they are dirt cheap and TUV
certified. You can use any supply you want. I use 15V supplies.
OK, that was my main concern. I just
On Mon, 2012-06-11 at 22:07 -0600, Jeshua Lacock wrote:
it supports two extruders
It has only one thermocouple input, so I'm not sure how you'd control
the second extruder head temperature.
Being an Arduino, it does have half a dozen analog inputs for
thermistors. I don't know whether the stock
On Tuesday 12 June 2012 12:42:01 Ed Nisley wrote:
There's been some work on reading analog values from various
microcontrollers into HAL through USB. That'd be the hard part of the
job,
Why not use a dmm with rs232 or usb?
There are some available with a thermocouple input.
Joachim
On Tue, 2012-06-12 at 13:22 +0200, Joachim Franek wrote:
Why not use a dmm with rs232 or usb?
A quick glance at the search results suggests that the combination of
thermocouple and usb runs about $100 direct from China and *much*
more than that from a reputable supplier.
You'd need a pair for
On 12 June 2012 12:55, Ed Nisley ed.08.nis...@pobox.com wrote:
A quick glance at the search results suggests that the combination of
thermocouple and usb runs about $100 direct from China and *much*
more than that from a reputable supplier.
A K-type thermocouple gives you 40uV/K
For 150C
On 12 June 2012 13:36, andy pugh bodge...@gmail.com wrote:
I found a 16-bit ADC with an 8x pre-amp
I forgot to say, it's about $2.
http://uk.rs-online.com/web/p/adc/6696098/
You would need to do linearisation in HAL (trivial-ish) and be a bit
cunning with the cold-junction compensation
On Tuesday 12 June 2012 14:36:52 andy pugh wrote:
On 12 June 2012 12:55, Ed Nisley ed.08.nis...@pobox.com wrote:
A quick glance at the search results suggests that the combination of
thermocouple and usb runs about $100 direct from China and *much*
more than that from a reputable
On 12 June 2012 14:20, Joachim Franek joachim.fra...@pibf.de wrote:
libmpsse
Does that hook in to HAL in a convenient way?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
--
Live Security
On Tuesday 12 June 2012 13:55:13 Ed Nisley wrote:
On Tue, 2012-06-12 at 13:22 +0200, Joachim Franek wrote:
Why not use a dmm with rs232 or usb?
A quick glance at the search results suggests that the combination of
thermocouple and usb runs about $100 direct from China and *much*
more
On Tuesday 12 June 2012 15:54:55 andy pugh wrote:
On 12 June 2012 14:20, Joachim Franek joachim.fra...@pibf.de wrote:
libmpsse
Does that hook in to HAL in a convenient way?
Today no.
libmpsse makes tho usage of libusb easier for spi devices.
I hope to have a normal programm to get the
On 12 June 2012 15:11, Joachim Franek joachim.fra...@pibf.de wrote:
I want to look to the lcnc code for
the userspace driver for hid devices.
This works nice with spancenavd for
the 3dspacenavigator.
Have you tried using hal_input to read it? It might just work if the
USB chip looks like a
On Tuesday 12 June 2012 16:18:18 andy pugh wrote:
Have you tried using hal_input to read it? It might just work if the
USB chip looks like a HID device at all.
No, I do not have tried this because this is not a hid device.
This is a usb to rs232 converter and detaching
the ftdi_sio driver
On 11 June 2012 01:09, Jeshua Lacock jes...@3dtopo.com wrote:
http://www.geckodrive.com/geckodrive-step-motor-drives/g251x.html $89
I think this is overkill for an extruder, which is only ever going to
move relatively slowly.
You would almost certainly be fine with one of the
If you're going to get any kind of Gecko for this application get a
G540 - handles all your axes at once (except the second head).
But that is also a 15V part IIRC. But that's ok - the only reason the
Makerbot uses a PC power supply is because they are dirt cheap and TUV
certified. You can use
I just put together one of the mk7 extruders over the weekend. It is a great
choice from my perspective anyway. The gecko driver will work fine. You will
need a 820 ohm and 20 ohm resistor (put them in series) to set the current to
the motor to 840ma. The driver will supply a constant current
On Monday 11 June 2012 02:09:23 Jeshua Lacock wrote:
Oh, can anyone recommend a decent RS485 card that will just work with Ubuntu?
http://www.ftdichip.com/Products/Cables/USBRS485.htm
But I have not tested it.
Joachim
On Sun, 2012-06-10 at 18:09 -0600, Jeshua Lacock wrote:
try the MakerBot extruder controller
My experiences with that thing may save you some heartache confusion:
http://softsolder.com/2011/01/06/thing-o-matic-extruder-controller-power-supply-improvement/
Am 11.06.2012 19:32, schrieb Joachim Franek:
On Monday 11 June 2012 02:09:23 Jeshua Lacock wrote:
Oh, can anyone recommend a decent RS485 card that will just work with Ubuntu?
http://www.ftdichip.com/Products/Cables/USBRS485.htm
But I have not tested it.
Joachim
This board should work
On Mon, 11 Jun 2012 09:46:26 -0700, you wrote:
I ended up throwing away my cheap Chinese junk stepper drivers because
they kept missing steps when coming out of idle. I run Keling KL-
4030's which are inexpensive and have worked well for me.
Made me laugh..
Keling KL-4030 are cheap Chinese
At $48 per kilo for material, it is on the expensive side, is there a
place for cheaper material?
-- Youda
On Mon, Jun 11, 2012 at 2:55 PM, Steve Blackmore st...@pilotltd.net wrote:
On Mon, 11 Jun 2012 09:46:26 -0700, you wrote:
I ended up throwing away my cheap Chinese junk stepper drivers
On Jun 11, 2012, at 10:03 AM, andy pugh wrote:
On 11 June 2012 01:09, Jeshua Lacock jes...@3dtopo.com wrote:
http://www.geckodrive.com/geckodrive-step-motor-drives/g251x.html $89
I think this is overkill for an extruder, which is only ever going to
move relatively slowly.
You
On Jun 11, 2012, at 10:46 AM, doug metzler wrote:
If you're going to get any kind of Gecko for this application get a
G540 - handles all your axes at once (except the second head).
Thanks Doug,
I actually have servos for my XYZ. I just want to get one extruder working for
now. But in the
On Jun 11, 2012, at 11:22 AM, mel...@earthlink.net wrote:
I just put together one of the mk7 extruders over the weekend. It is a great
choice from my perspective anyway. The gecko driver will work fine. You will
need a 820 ohm and 20 ohm resistor (put them in series) to set the current to
On Jun 11, 2012, at 11:38 AM, Ed Nisley wrote:
On Sun, 2012-06-10 at 18:09 -0600, Jeshua Lacock wrote:
try the MakerBot extruder controller
My experiences with that thing may save you some heartache confusion:
On Jun 11, 2012, at 5:49 PM, Youda He wrote:
At $48 per kilo for material, it is on the expensive side, is there a
place for cheaper material?
Yes, I just had that on my list because I figured it was worth starting with
known quality (its made by the people that make the extruder,
There's a contest going on for anyone who wants to take on the pellet
to filament conversion:
http://hackaday.com/2012/05/22/win-4-for-squirting-plastic-out-of-a-nozzle/
I have heard that the different providers have their own recipe for
the filament, so it might not be just pure ABS or PLA.
Jeshua re:
Are you using it on your mill, or do you have a dedicated printer for it?
I built my own printer. If you go to http://www.thingiverse.com/DougM
there's a piccie of it in my profile. It was my first foray into
building a machine with a moving the table rather than a moving head
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