#linuxcnc | Logs for 2013-10-02

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[10:31:36] <jthornton> it's morning now
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[10:41:27] <DJ9DJ> tag
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[10:57:17] <kengu> good afternoon
[10:59:18] <DJ9DJ> dito, good afternoon :)
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[11:10:44] <EngEC> Hi there!
[11:11:17] <EngEC> Does anyone here know how to install an library in linuxcnc and use it in HAL?
[11:11:41] <EngEC> (its a C++ lib)
[11:11:55] <jthornton> in the source code?
[11:13:36] <EngEC> yep, its an open-source lib
[11:14:01] <jthornton> what does this library do?
[11:14:48] <EngEC> communication through the USB, it handles the protocol that is used between the software and the driver
[11:16:56] <jthornton> doesn't sound like something you would use with HAL
[11:16:56] <jthornton> what are you trying to do
[11:17:52] <EngEC> though so... send commands through the USB port
[11:18:46] <jthornton> what do these "commands" do?
[11:20:01] <archivist> and which direction
[11:20:08] <EngEC> its for my spindle driver, the 'commands' are send to set the desired spindle
[11:20:39] <EngEC> PC -> Spindle_Driver
[11:20:59] <EngEC> but was nice to make the transciever work XD
[11:21:22] <EngEC> (make it bidirectional)
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[11:28:32] <EngEC> does anyone know how to help me?
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[11:35:55] <jthornton> you might try the mailing list
[11:36:34] <EngEC> thx j ;)
[11:36:36] <jthornton> but it does not sound like some easy thing to do so be prepared to study the internals of LinuxCNC
[11:37:52] <EngEC> I've been studying it, but needed to ask to the community if anyone could help, that would be easier XD
[11:38:00] <jthornton> does your drive have a modbus input for control?
[11:38:00] <EngEC> nevertheless, thanks alot for your help
[11:38:13] <archivist> or see examples of the usb input devices that people have used and see if they can be extended
[11:38:22] <jthornton> it's always easier if someone else does the work
[11:39:02] <EngEC> arch, that was my idea, but couldnt find one
[11:39:03] <jthornton> all the usb are input only devices IIRC
[11:39:18] <EngEC> j, its not that, but the help is appreciated
[11:39:23] <EngEC> it doesnt use modbus
[11:39:30] <EngEC> its an SPI interface
[11:39:43] <EngEC> hal-input, I read
[11:39:46] <EngEC> I've*
[11:39:47] <jthornton> IIRC Mesa has a SPI card
[11:39:52] <archivist> spi...one of the mesa cards ?
[11:39:55] <EngEC> but that is the problem, I need outtake
[11:40:15] <jthornton> might try and catch pcw_home and ask him
[11:40:18] <EngEC> no, its another driver, one inside the driver
[11:40:28] <EngEC> but that gave me an Idea
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[11:41:25] <jthornton> there is some talk on the forum about SPI
[11:41:46] <EngEC> thx, I'll ask him =D
[11:43:46] * jthornton heads out for some mountain bike riding
[11:44:18] <archivist> ew too much effort this time of day :)
[11:45:24] <EngEC> ahaha
[12:05:48] <Jymmm> jthornton: Look at ntop. It can show you all the traffic on the lan and from where and what; apt-get install ntop
[12:10:46] <Jymmm> jthornton: NOT 'ntopng', that is something new, not the original 'ntop' even though they are from the same place.
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[13:42:55] <jdh> is it useful for anything other than job seeking?
[13:42:57] <jdh> <urk>
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[13:48:10] <JT-Shop> Jymmm: Thanks, I'll have to look at it later, making parts...
[13:48:33] <Jymmm> jthornton: np, I just totallt forgot about it for monitoring traffic on a lan
[13:49:04] <JT-Shop> the netgear thing gives me what I need for now
[13:49:17] <JT-Shop> if the usage goes up I'll start looking for where
[13:49:39] <Jymmm> JT-Shop: NTOP is still neat, you can see who is using what.
[13:49:49] <Jymmm> JT-Shop: all web based
[13:50:34] <JT-Shop> looked like terminal to me, I installed it and did man ntop
[13:51:43] <Jymmm> it has it's it's own web server
[13:52:18] <Jymmm> http://www.elblogderigo.info/wp-content/uploads/2009/08/cacti_ntop1.jpg
[13:55:02] <JT-Shop> must need some setup or something
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[13:56:50] <Jymmm> yeah, you have to start it =)
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[14:00:17] <JT-Shop> it gives me an error :(
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[14:11:38] <JT-Shop> lol you need to start is as sudo
[14:14:13] <jdh> libpcap requires r00t to put the adapter in promiscuous mode
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[14:14:55] <jdh> assuming this uses pcap
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[15:23:10] <Tom_itx> Jymmm how is ntop different than wireshark?
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[17:17:09] <IchGuckLive> hi all B)
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[17:24:28] <uw> HELLO
[17:25:06] <DJ9DJ> hi there
[17:25:41] <IchGuckLive> B)
[17:25:48] <IchGuckLive> tomorrow rest day in germany
[17:25:52] <DJ9DJ> indeed
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[17:32:15] <IchGuckLive> someone has a moose dxf to cut on plasma
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[17:33:46] <jthornton> there is a ton of that on the zone
[17:34:30] <IchGuckLive> i see but no moose
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[17:52:15] <Loetmichel> IchGuckLive: sowas? http://www.cyrom.org/palbum/main.php?g2_itemId=8731
[17:52:48] <IchGuckLive> nein ein 3d aufsteler ich hab was
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[17:53:57] <Loetmichel> ok
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[17:57:56] <IchGuckLive> schönen feiertag BY folks
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[17:58:09] <DJ9DJ> danke gleichfalls
[17:58:14] <DJ9DJ> hm, too fast 4 me
[18:00:11] <Loetmichel> grrr... day of german unity... forgot that completely... would have gone to the doc tomorrow... and would have been standing in front of a closed door :-(
[18:00:24] <Loetmichel> i hope he has open friday
[18:00:35] <Loetmichel> s/has/is
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[18:11:12] <DJ9DJ> hmm, are you ill?
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[18:26:32] <Jymmm> Tom_itx: wireshark is to atmel, as ntop is to ardunio... http://www.youtube.com/watch?v=glNZA9vpy8Y
[18:27:59] <Jymmm> Tom_itx: That's the best video I could find, but ntop shows more than that video so poorly shows
[18:28:49] <Jymmm> Tom_itx: Other than startup and password, theres really not much to know/configure, unless oyu want more specifics.
[18:29:50] <Jymmm> Tom_itx: wireshark gives you specifics, ntop gives you "the big picture"/overview.
[18:30:22] <ReadError> ntop is good
[18:31:02] <ReadError> you may want to put a transparent linux box between your modem/router
[18:31:07] <ReadError> then you can easily block stuff
[18:31:13] <ReadError> and do QOS
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[18:37:07] <uw> Hi there DJ9DJ
[18:39:07] <Jymmm> JT-Shop: Basically, ntop will let you see instead of guess where all your traffic is coming from.
[18:39:52] <JT-Shop> ok, thanks
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[18:53:51] <DJ9DJ> good evening uw
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[19:16:37] <Tom_itx> ReadError, why not block it at the router?
[19:17:00] <Tom_itx> i'm trying to figure out how to set up rules for mine
[19:17:11] <ReadError> not all routers are that flexible
[19:17:24] <Tom_itx> this edgemax is
[19:17:37] <Tom_itx> it basically runs linux
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[19:39:47] <ReadError> well yea but if he has 10GB per month to blow he probably doesnt have that ;)
[19:40:21] <ReadError> theres a linux router appliance OS
[19:40:27] <ReadError> forget the name ;/
[19:41:51] <jdh> several of them
[19:44:24] <ReadError> yea im sure theres more
[19:50:48] <jdh> RouterOS & EdgeMax, dd-wrt & tomato for some routers
[19:52:57] <ReadError> http://en.wikipedia.org/wiki/PfSense
[19:53:02] <ReadError> this is bsd based
[19:53:07] <ReadError> which is actually better for routers
[19:54:24] <jdh> BSD is just a fad, it will never last.
[19:55:47] <tjb1> What happened to r00t?
[19:55:48] <Loetmichel> wasnt there a big loophole in the dd-wrt code?
[19:56:08] <Loetmichel> i've read something about router-botnets discovered lately
[19:56:27] <ReadError> has ntop, proxy, etc
[19:56:29] <ReadError> good for what he needs
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[19:59:11] <tjb1> Is there a bot in this channel that tracks users?
[19:59:20] <tjb1> Like, able to use a seen command?
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[20:02:12] <jdh> !seen tjb1
[20:02:13] <the_wench> last seen in #linuxcnc 2013-10-02 20:59:19GMT 00:02:53 ago, saying Like, able to use a seen command?
[20:02:26] <jdh> looks like there is.
[20:03:31] <jdh> !seen the_wench
[20:03:31] <the_wench> last seen in #heekscad 2013-09-25 02:03:53GMT 186:59:38 ago, saying joined chan
[20:09:02] <tjb1> !seen r00t4rded
[20:09:03] <the_wench> Never heard of the entity r00t4rded you ask for
[20:09:17] <tjb1> hmm
[20:10:44] <tjb1> !seen r00t4rd3d
[20:10:44] <the_wench> last seen in #linuxcnc 2013-05-18 19:11:59GMT 838:59:59 ago, saying joined chan
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[20:25:24] <andypugh> Well, I found what was wrong with my PSU (exactly what i thought was wrong with my PSU)
[20:25:25] <andypugh> https://plus.google.com/photos/108164504656404380542/albums/5930254306221907233
[20:26:10] <cradek> yuck
[20:27:21] <micges> andypugh: it was loud?
[20:27:23] <cradek> jmk always knows the right answer for this kind of thing, doesn't he
[20:27:45] <Loetmichel> hmmm
[20:27:50] <andypugh> Yes, though all his solutions are perfect, industrial-strength, and expensive.
[20:27:56] <cradek> haha
[20:27:59] <Loetmichel> what was that, andypugh? diodes or varistors?
[20:28:14] <andypugh> micges: It made me jump, but the smell was worse.
[20:28:18] <Connor> What was it >
[20:28:19] <Connor> ?
[20:28:31] <andypugh> Loetmichel: A normal power resistor!
[20:28:40] <Loetmichel> oh.
[20:28:50] <Loetmichel> softstart circuit?
[20:29:03] <andypugh> Crowbar circuit.
[20:29:22] <Loetmichel> ah, for the dc bus in the VFD?
[20:29:35] <andypugh> Perhaps living up to its name a bit too much.
[20:29:40] <Loetmichel> hrhr
[20:29:47] <andypugh> Loetmichel: DC bus for the 8i20 dirives.
[20:30:10] <Loetmichel> isnt a corbar normally made with a solid short and hoping the fuses in the input will blow?
[20:30:15] <Loetmichel> crowbar
[20:31:08] <andypugh> True, I guess this isn't technically a crowbar.
[20:32:23] <Loetmichel> more like a shunt regulator
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[20:32:55] <andypugh> Well, it tries to regulate to zero...
[20:34:07] <andypugh> The purpose is to discharge the caps when the power goes off. I guess not bothering would be an entirely reasonable option, as long as I could guarantee to always remember what I had done...
[20:35:58] <Loetmichel> andypugh: i can assure you: you WILL remember it when you touch it ;-)
[20:36:16] <andypugh> My worry is that I won't remeber anything else ever again.
[20:36:29] <Loetmichel> harhar
[20:36:37] <Loetmichel> how much voltage on that dc bus?
[20:37:07] <andypugh> 300V
[20:37:25] <Loetmichel> the 80V from these were "awakening" to say the least: http://www.cyrom.org/palbum/main.php?g2_itemId=4760
[20:37:31] <Loetmichel> oh, ok, that could be bad
[20:37:36] <CaptHindsight> large bleeder resistor
[20:37:47] <Connor> Make a coil gun. :)
[20:37:50] <Loetmichel> CaptHindsight: will last a bit long
[20:37:54] <Loetmichel> ti discharge
[20:37:55] <andypugh> That _is_ my large bleeder resistor.
[20:38:18] <CaptHindsight> was, your bleeder resistor :)
[20:38:24] <Loetmichel> or will waste to much power when small enough for reasonable discharge times
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[20:38:37] <Connor> stove element ?
[20:38:50] <Loetmichel> so the solution with a big resistor and a relais to switch it on the caps at poweroff is a good idea
[20:40:59] <andypugh> A permanently connected stove element would probably over-heat. Aren't they normally thermostatically controlled? And I would need to double the rating of all the parts.
[20:41:57] <Connor> Is this for continuous use ? I.E. not a spike ?
[20:42:19] <Connor> I know that people have used them for breaking resistors without issue..
[20:42:56] <andypugh> It is meant to discharge the caps when the machine is off.
[20:43:07] <Connor> Then it should be fine.
[20:43:15] <andypugh> Otherwise the 300V will hang about to surprise me when I am working on the machine.
[20:44:00] <Connor> the spike shouldn't last long enough to burn them out.
[20:44:17] <Loetmichel> andypugh: WIMP! ;)
[20:44:23] <andypugh> The 100W power resistor is 100% OK (so, it takes 1kW for 4seconds, it can handle that). It is only not OK when a relay fails and wires it permanently across the mains supply.
[20:44:37] <Loetmichel> (not serious!)
[20:45:05] <Connor> Why did the relay fail ?
[20:45:29] <Loetmichel> andypugh: i had the problem the other way round with a softstart for a 2.4kW stage Amplifier with primary SMPS
[20:47:09] <Loetmichel> the 16 caps with 1800µf 400V have killed a whole rack of amps in a fixed installation whre the amps were about 2meters (electrically) from a 250A Circutbreaker on tha mains power rails
[20:47:16] <Loetmichel> big rails that is
[20:47:28] <andypugh> Connor: I am not sure. I suspect a momentary power glitch. The relay is only supposed to close at 300V and not release until 0V. If it tries to release at 300V then (because it is DC) the contacts arc and weld. Then the other contacts in the relay make contact, and we have both the NC and NO contacts closed at the same time (which is not meant to happen)
[20:47:49] <Loetmichel> switched the breaker on: BIG bang, 10 amps spitting oput flames and debris in the front...
[20:48:08] <Loetmichel> and that were 4 times 10W ceramic Resistors in each amp
[20:48:17] <Loetmichel> simply disintegrated
[20:48:43] <CaptHindsight> I use relays with a delay for power transfer switches
[20:49:32] <andypugh> What I should be using is force-guided relays where it is physically impossible for one set of contacts to close if the other is welded.
[20:49:45] <PCW> andypugh: If i disable writes to the setup register the fanuc interface works
[20:50:21] <CaptHindsight> the problem is similar, power goes out, generator turns on, transfer switch moves to generator, power comes back up intermittently
[20:51:54] <CaptHindsight> if the contacts are welding then they aren't big enough
[20:54:09] <CaptHindsight> that will happen if you use the same relay with NC and NO contacts for switching
[20:54:34] <PCW> bugs:
[20:54:35] <PCW> 1: I had an error in the regmap file for the Fanuc aA64 (both count fields are 16 bit) so in the
[20:54:37] <PCW> AA64 format string, the 20 changes to 16 and the last pad changes from 3 to 7
[20:54:38] <PCW> 2. batt and valid bits are inverted
[20:54:40] <PCW> 3. CRC ends up as a scaled floating point number
[20:55:11] <CaptHindsight> PCW: I need an FPGA board with more than 144 IO
[20:56:20] <CaptHindsight> or a breakout board with another FPGA to do more demultiplexing
[20:56:31] <PCW> we had a customer that wanted ~400 I/O (288 scaler counters)
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[20:57:09] <PCW> how fast are the signals?
[20:57:15] <CaptHindsight> I just have too many data and control lines
[20:57:49] <Connor> CaptHindsight: What in the world are you doing to need more that 144 I/O ?
[20:57:49] <CaptHindsight> the data is 3bits at 30MHz
[20:58:38] <CaptHindsight> Connor: really big printheads
[20:58:45] <PCW> how many channels of 3 bits at 30 MHz?
[20:58:49] <CaptHindsight> 1k-4k nozzles
[20:59:02] <CaptHindsight> 4 channels per head
[20:59:05] <Connor> ink or 3d printer ?
[20:59:10] <CaptHindsight> yes
[21:00:22] <CaptHindsight> plus they have 5 lines for an eprom and one design also requires a few bits for a 2MHz DAC
[21:01:19] <CaptHindsight> might just have to make a board myself
[21:01:31] <DJ9DJ> gn8
[21:01:57] <PCW> probably (use a zynq and Ethernet the data to the head)
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[21:03:47] <CaptHindsight> PCW: ~15MBytes/sec just for nozzle data
[21:04:19] <CaptHindsight> per head and there might be 4->100 heads
[21:04:59] <CaptHindsight> maybe Parallela with lots more IO
[21:05:44] <CaptHindsight> using the 3x20 for now
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[21:06:07] <CaptHindsight> the MB has 6 PCIe slots
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[21:10:48] <CaptHindsight> I have some zedboards but they only have 68 single-ended I/O or 34 diff pairs
[21:11:43] <PCW> Yeah thats a lot of I/O
[21:12:19] <CaptHindsight> http://global.kyocera.com/prdct/printing-devices/inkjet-printheads/ these are even bigger, 100 million drops a second per printhead
[21:12:39] <CaptHindsight> some use LVDS, some don't
[21:13:47] <CaptHindsight> the ones that don't, you want to sit down with their engineering director and have a chat :)
[21:15:55] <CaptHindsight> http://global.kyocera.com/news/2012/0404_phhs.html 330 million drops per second from a head with 5,120 nozzles
[21:17:17] <andypugh> CaptHindsight: Transputer.
[21:17:44] <andypugh> (That was a joke, don't bother googling)
[21:18:02] <andypugh> We actually have systems at work that use transputers though.
[21:18:09] <CaptHindsight> from the 80's- early 90's
[21:19:09] <CaptHindsight> we're not doing much processing, just moving lots of data around
[21:19:29] <andypugh> Too fast for Smart Serial I guess?
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[21:20:40] <andypugh> One of those wide printheads squirting binder into a powder-bed machine could make parts in minutes.
[21:20:55] <andypugh> (or, for that matter, sand moulds)
[21:21:03] <CaptHindsight> GbE and fiberchannel are the most popular
[21:21:12] <CaptHindsight> yeah, how it's done
[21:21:26] <andypugh> It might even be comparable with traditional wood-pattern production rates. That would be game-cganging.
[21:22:09] <CaptHindsight> I think ExONE uses Fuji heads or the Kyocera
[21:23:27] <CaptHindsight> you can also mix resin with the sand, and then just print and cure the outside walls, then bake the whole mold to make it solid
[21:23:53] <andypugh> I am trying to persuade a friend that he needs me to build him a sand mounld printer
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[21:27:15] <CaptHindsight> andypugh: most of this is pretty straightforward to build except for obvious patents and inkjet tech being under really tight NDA
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[21:28:43] <andypugh> This would not be commercial, just for making parts ofr his vintage vehicles.
[21:28:45] <CaptHindsight> printing sand molds is not difficult but the patent holders artificially keep the costs of doing so high
[21:29:40] <CaptHindsight> printheads are also expensive, so you're fuel injector approach will work
[21:29:55] <CaptHindsight> you're/your
[21:30:05] <CaptHindsight> bbl
[21:31:24] <Tom_itx> andypugh i put a few leds in the PSU to help drain my caps
[21:31:27] <Tom_itx> works rather well
[21:33:40] <Tom_itx> seen on the boards i made to mount the caps: http://tom-itx.dyndns.org:81/~webpage/cnc/psu/control1.jpg
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[21:41:31] <andypugh> That's a lot of caps, how long does it take the LEDs to discharge them?
[21:42:35] <andypugh> As I keep pointing out, the voltage and capacitance I am talking about makes it a slightly different proposition.
[21:44:43] <andypugh> For a start the resistor to limit the current to 50mA at 300V would be dissipating 15W.
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[21:50:13] <andypugh> I made a voltage-doubling supply a while ago. 2 caps, 2 diodes, 700VDC from the mains. That scared me.
[21:52:44] <Tom_itx> not very long
[21:52:58] <Tom_itx> i got them surplus, they're small but add up to what i needed
[21:54:08] <Tom_itx> they discharge in maybe 10-15 sec
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[21:56:37] <andypugh> Tom_itx: What voltage are the caps at?
[21:57:25] <andypugh> PCW: The CRC ending up as a float is a consequence of Smart Serial making everything float. (which is typically more useful in HAL)
[21:57:30] <PCW> andypugh suggested AA64 string:
[21:57:32] <PCW> p%5pbatt_faill%1bp%2ppos_invalid%1bp%9plow%16lp%2pencoder%16hp%2pcomm%10up%7pcrc%5u
[21:58:10] <andypugh> I just removed the requirement to have a name, so p%p12 can just be %p12
[21:58:19] <PCW> OK
[21:58:47] <andypugh> But I will use your string, if it works for you.
[21:58:58] <PCW> we encoder non floats by having 0 scaling numbers
[21:59:07] <PCW> encode
[21:59:31] <PCW> but perhaps a intger type would be better
[21:59:38] <PCW> integer
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[22:00:16] <PCW> I think its better without the extra P's
[22:00:21] <andypugh> Well, in HAL it is no problem, and CRC is useless at the moment. I would suggest that we would need to add a CRC "type"
[22:00:44] <PCW> or calculate it in the driver
[22:00:48] <andypugh> You can't do CRC in HAL, you don't have the bytes to CRC..
[22:01:23] <andypugh> Yes, exactly, CRC needs to be intercepted by the Smart Serial driver.
[22:01:55] <PCW> I have (fairly crufty) example code
[22:01:56] <andypugh> (I am thinking that UART and BSPI could come under this formatting convention too)
[22:01:58] <Tom_itx> andypugh, they're around 48-50v
[22:02:42] <PCW> Yeah its a much nicer to have those thing programmable
[22:02:49] <andypugh> PCW %16ogu = 16 bits of gray-coded unsigned output bits...
[22:03:54] <andypugh> Actually, that won't work, it would have to be uart_0_out=hello%34uworld%24f, uart_0_in=...."
[22:04:47] <andypugh> The trick is to add that without breaking the 7i65(?) driver.
[22:08:19] <PCW> as far as I know the 7I65 driver is broken anyway
[22:08:36] <andypugh> Oh
[22:08:45] <Jymmm> I blame the 7i65 mfg
[22:08:54] <Tom_itx> heh
[22:08:55] <andypugh> I blame the driver writers.
[22:08:57] <PCW> at some point it started segv-ing
[22:09:10] <andypugh> I thought we solved that?
[22:09:20] <Jymmm> andypugh: YEAH! They can't even spell COLOR correctly!!!
[22:09:22] <andypugh> I guess that is why you sent me one several months ago?
[22:09:49] <PCW> I was able to avoid the segv but it no longer worked at that point
[22:10:16] <andypugh> I need the mill back up to test. But I will put it on my list to test.
[22:11:09] <Tom_itx> just how big is that list?
[22:11:25] <PCW> Is the phase_error_us pin the scaled read of 7600?
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[22:13:20] <Jymmm> WOW http://www.youtube.com/watch?v=FcifJkhXpMM
[22:13:42] <andypugh> PCW: It should be, though it is currently worryingly integer. If you set the plimit to 0 you will see that it oscillates between -500 and +500 uS. which sounds right.
[22:15:30] <PCW> Yes thats what you would expect if it cant lock
[22:16:01] <andypugh> Seems to indicate that the scaling it right?
[22:16:10] <PCW> Yes
[22:16:14] <Tom_itx> Jymmm, that's some crappy welding
[22:16:34] <andypugh> I have shoelaces that strong. But thinner.
[22:16:48] * Jymmm smacks the synthetic rope out of Tom_itx
[22:17:38] <andypugh> (Seriously, 4mm spectra shoelaces, 1000kg breaking strain, just in case)
[22:17:39] <Jymmm> 1/8 = 2500lbs avg strength
[22:17:39] <Tom_itx> you goin climbin with 3/4" rope?
[22:18:20] <andypugh> I have caved with 9mm rope. It looked too thin.
[22:18:40] <Jymmm> 1/4" = 8600lbs
[22:18:46] <Jymmm> avg
[22:18:50] <Tom_itx> i use 5/8 for tree work similar type rope
[22:19:19] <Jymmm> 1/2" = 34,000 lbs
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[22:22:19] <andypugh> Tom_itx: 16mm rope? Is that a circumference?
[22:22:40] <Tom_itx> diameter
[22:22:56] <andypugh> That's pretty chunky rope
[22:23:07] <Tom_itx> i don't care to fall
[22:23:16] <Tom_itx> and it gets abused
[22:23:28] <andypugh> Cavers consider 12mm to be big (that would be 1/2")
[22:23:53] <andypugh> But I guess you don't have to drag your ropes a few miles through constricted passages.
[22:23:55] <Tom_itx> pretty sure this is 5/8.. it could be 1/2
[22:25:01] <andypugh> As I said, 9mm is perfectly OK, but it _looks_ wrong. (3/8')
[22:25:27] <andypugh> (Caving rope doesn't see dynamic loads)
[22:26:25] <Tom_itx> yeah, i've seen some of that thin stuff (1/8 or so) rated at unreal numbers
[22:26:29] <andypugh> The jammers are rated from 8mm to 13mm
[22:26:35] <Tom_itx> mostly used to carry equipment i suspect
[22:28:03] <andypugh> Yes, you would probably not hang yourself on 3mm string.
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[22:28:55] <andypugh> Though the Russians devised an entire set of caving equipment based around 5mm(?) steel wire rope.
[22:29:41] <PCW> There is an issue with the DPLL there will be errors in modules that use it until its locked
[22:30:41] <PCW> there also seems to be a bug with the battery bit (and maybe other bits)
[22:30:43] <PCW> the battery status is only updated if the encoder count changes
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[22:35:57] <andypugh> Is that them, you or me?
[22:36:37] <PCW> also data-incomplete seems to come from the wrong place (and encoder bit?)
[22:37:16] <PCW> Ill check the battery bit on winders
[22:40:09] <PCW> Must be a driver thing, the battery bit in the data stream is updated in real time
[22:42:02] <andypugh> data-incomplete is *0x1800 & 0x800, which sounds like the right register and bit?
[22:42:27] <andypugh> Cable fault seems to be wrong, mind.
[22:45:06] <andypugh> And data-incomplete was only being checked if there was a cable fault (oops)
[22:48:59] <PCW> cable fault is 0x1700 0x80000000
[22:49:14] <PCW> (high = fault)
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[22:50:27] <PCW> data incomplete is now basically the busy bit in the global busy register
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[22:52:04] <PCW> if anything is wrong (cable error, busy, no return data, stale data etc) the busy bit will be high
[22:52:19] <PCW> so probably no need to read 1800
[22:54:25] <andypugh> OK.
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[22:55:20] <PCW> that much is basically working (if i pull the plug all the data goes to 0)
[22:56:49] <andypugh> How does this look?
[22:56:50] <andypugh> ct 2 23:56:28 dn2800 kernel: [93526.329815] hm2/hm2_5i25.0: Writing 0x00001280 to 0x1800
[22:56:51] <andypugh> Oct 2 23:56:28 dn2800 kernel: [93526.329823] hm2/hm2_5i25.0: Writing 0xF0007DD4 to 0x1900
[22:56:52] <andypugh> Oct 2 23:56:28 dn2800 kernel: [93526.329828] hm2/hm2_5i25.0: Writing 0x4C428000 to 0x1700
[22:56:53] <andypugh> Oct 2 23:56:28 dn2800 kernel: [93526.330775] hm2/hm2_5i25.0: Writing 0x00001200 to 0x1800
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[23:02:27] <andypugh> 1024 kHz is 0x7DD4 or 0x1EB8420 ?
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[23:07:55] <PCW> Let me check my calculyser
[23:09:37] <PCW> 0x7DD4 is what I get
[23:14:01] <andypugh> Great.
[23:14:21] <andypugh> That just leaves 0x1700
[23:15:49] <andypugh> The 4C looks right
[23:19:32] <PCW> 64 +8 +4
[23:19:38] <PCW> yep
[23:20:20] <andypugh> I still don't quite "get" the request length
[23:24:01] <PCW> the fanuc encoder needs a request pulse, it should be 8 usec long at 33.333 MHZ this is 10A (428 is 10A shr 2 so is correct)
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[23:26:09] <andypugh> So, it seems that we correctly turn on writes, set the values and turn off writes?
[23:27:25] <andypugh> Currently the busy flag sensing is on the individual channel bits. Do you want me to push now, or wait until I have recongigured for the busy-bits-global version?
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[23:28:47] <PCW> Look like it dont return the write enable state on reads but I should
[23:30:14] <PCW> Looks OK I would wait for the global busy check as its designed to save I/O cycles (no need to read anything but global busy and data regs for normal use)
[23:30:16] <andypugh> Does that matter?
[23:30:32] <PCW> only for debugging
[23:30:37] <andypugh> (write-enable, that is)
[23:31:30] <PCW> not really but it was assumed at the beginning that the defaults would be used (so they are protected)
[23:31:32] <andypugh> As it is just me and thee looking at this, there is no penalty in me pushing the current version to the dedicated branch.
[23:32:20] <PCW> sure and i can try my (cable error = stay busy) firmware
[23:33:51] <PCW> Also only the global busy bit has the gating with DAV so its really the authority on whether the data is any good or not
[23:35:13] <andypugh> Aye, I get that, but you have hours to go, and I have mere minutes
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[23:35:48] <PCW> no hurry. its great to see it working as is.
[23:38:18] <andypugh> I used your config string. That does not appear to swap "valid" and "batt", curiously.
[23:38:24] <somenewguy> I have two dumb questions for you guys, I think I already know the answer to the first one tho
[23:38:51] <somenewguy> can something like this "variable transformer" be used to control motor speed of my 1/4 hp motor, or will an inductive load blow it up
[23:38:52] <andypugh> Typicallly the annswer is "It's a type of fish"
[23:38:53] <somenewguy> http://www.heatersplus.com/18tp.html
[23:39:15] <somenewguy> thats a heck of a poisson ratio...
[23:39:30] <PCW> they were not swapped, just had wrong names (batt should be batt_fail)
[23:39:37] <andypugh> it can control the _power_ of your AC motor.
[23:39:49] <somenewguy> i realize I would need feedback and all that jazz
[23:40:02] <PCW> (valid should be pos_invalid)
[23:40:08] <somenewguy> just wondering if it can happilly drive a motor, I know sometimes these things are not as simple as they appear
[23:40:20] <andypugh> How much does it cost?
[23:40:39] <somenewguy> I have one that has been orphaned, they are like 180
[23:40:54] <somenewguy> or 90, its been a while
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[23:41:17] <somenewguy> $180
[23:41:24] <PCW> it might sort of drive a AC-DC motor
[23:42:13] <andypugh> You can buy a 3hp Variable Frequency Drive for that money
[23:42:45] <andypugh> http://www.ebay.com/itm/300652886556
[23:43:05] <andypugh> But I don't think that will drive a 1-phase motor
[23:43:32] <andypugh> If it was free, then try it.
[23:43:39] <somenewguy> well I already have the Payne transformer sitting infront of me on my desk
[23:43:57] <somenewguy> but I don't wanna blow it up, could serve a better use somewhere else
[23:44:13] <somenewguy> and it was paid for with money, so I don't wanna hook it up to somethign that will just kill it
[23:44:25] <somenewguy> wow that VFD si a lot chepaer than I would have expected one to be, of that size
[23:44:45] <somenewguy> my mill is a mini mill, so 1/4 hp is plenty, for the record
[23:44:53] <andypugh> I can see that with a Radio Control servo to twiddle the knob for you that it might work
[23:45:10] <somenewguy> which I also have sitting in a box
[23:45:30] <somenewguy> hence me going "hmmmm" when I noticed it on the shelf for the first time in a while
[23:45:48] <andypugh> Which Mini-Mill? They typically already have a variable speed drive.
[23:45:57] <somenewguy> drilling 1mm holes 25mm deep in acrylic had me wishing for a slightly slower low speed
[23:45:59] <somenewguy> taig
[23:46:24] <somenewguy> my friend has a chinese one w/ speed controll, I am trying to get him to let me breed em
[23:47:47] <andypugh> I grafted a proper 1hp 3-phase onto my Chinese mini-mill (actually I think mine is an Indian knock-off of a cheap Chinese knock-off of a cheap Emco)
[23:49:15] <somenewguy> haha
[23:49:15] <andypugh> Not likely to work on a Taig though: https://picasaweb.google.com/lh/photo/Dk3wsS9o7XJ-N2kfUnESDtMTjNZETYmyPJy0liipFm0?feat=directlink
[23:49:28] <somenewguy> the taig is a bit smaller than the chinise mill
[23:49:43] <somenewguy> woah
[23:49:48] <somenewguy> that's a lot of mooor
[23:50:23] <somenewguy> I am kinda hoping to have a treadmill fall into my lap, cause I have a few 24 volt/25 amp DC motor controllers, and I understand them a bit more
[23:50:32] <somenewguy> induction motors are sitll black magick as far as I am concerned
[23:50:51] <andypugh> That whole machine is now filed under "Error of judgement, sell to a fool"
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[23:51:39] <andypugh> It is an OK lathe, but very narrow in the bed for the centre height and length.
[23:51:58] <andypugh> But it is a dreadful mill.
[23:52:21] <somenewguy> the proportions look a little, unique
[23:52:40] <somenewguy> oh speaking of unique, here was my second important question
[23:53:07] <somenewguy> I don't have a flat computer surface i work on for the mill, and likely never will so my trackball mouxe (shut up i ran out of laser/ir ones) is a pile
[23:53:16] <somenewguy> really hard to use on my dented little table
[23:53:36] <somenewguy> so I was wondering if anyone has ever used those ball mice (the onese with teh ball on top, not sure what they are called) in the shop, if it is convenient?
[23:53:47] <kwallace2> Unless I missed something, that heatersplus unit is for brushed motors... or heaters.
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[23:53:51] <somenewguy> that way sufrace quality just doesn't matter, and Icould hold it as I walk around if needed
[23:54:19] <kwallace2> Oops, I scrolled to the wrong place.
[23:54:22] <somenewguy> kwallace2: the hearsplus thing is used for heaters a whole lot yes, I don't think it would work on a brushed motor
[23:54:24] <somenewguy> still AC
[23:54:46] <andypugh> The mill has been replaced by this: 1970 Harrison iron + 750W servos. http://www.youtube.com/watch?v=X0celdfZmkA
[23:55:10] <kwallace2> A brushed AC or "universal" motor.
[23:55:22] <somenewguy> the SECOND I have the floor space and a structural floor, I am selling the taig and gettting a real mill
[23:56:05] <somenewguy> moster motors
[23:56:19] <somenewguy> I am very jealous
[23:57:12] <andypugh> somenewguy: Well, really, what you want is a touchscreen, a jog-wheel, an axis-selet and the Touch (or Gscreen or GmoccaPy) interfaces
[23:57:16] <somenewguy> are brushless servos steppers with feedback?
[23:57:54] <somenewguy> I was thinking about a touch screen, but not too sure about spending the money, also would need to have a more finalized setup
[23:57:59] <andypugh> Techically, yes they are
[23:58:16] <somenewguy> also this is a hobby (that makes me money, but not much) so I need to TRY and be carefull how much I spend
[23:58:21] <somenewguy> that only goes so well of course...
[23:59:00] <andypugh> But they are a 2 or 4 or 6 step-per-rev stepper, but with a huge degree of (closed loop) microstepping
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