#emc | Logs for 2011-07-23

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[00:12:49] <PCW> just in case you wanted to see a bldc hal file setup with the 8I20
[00:12:51] <PCW> hm2-servogreen.hal
[00:12:52] <PCW> 5i20green.ini
[00:13:07] <PCW> (both at freeby.mesanet.com)
[00:13:18] <anonimasu> perfect, will they be up so i can grab them tomorrow?
[00:13:33] <PCW> up now
[00:13:48] <PCW> but time for me to go home BBL
[00:14:16] <anonimasu> bedtime here also
[00:14:21] <anonimasu> thanks for the help!
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[00:28:20] <Jymmm> QUESTION... do you think a W&D (used) would fit into a Ford Expedition SUV ?
[00:28:28] <Jymmm> both
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[01:08:32] <Tom_itx> w&d?
[01:08:50] <Tom_itx> how big a torch you got?
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[02:25:29] <Grandixximo> Hello everyone
[02:25:59] <Grandixximo> Does anyone know, if there is a way to make tool incrementation on EMC2?
[02:26:13] <Grandixximo> I mean, tool got wasted while working
[02:26:23] <Grandixximo> expecially polishing tools
[02:27:30] <Grandixximo> So you need a real time trajectory incrementation, to always have the polishing tool touching the surface to polish, what is the best way to do this in EMC2?
[02:28:55] <Grandixximo> Other CNC that have this have the diameter going smaller while the machine is working, and every trajectory is recalculated accordingly
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[03:02:03] <alex4nder> hey
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[03:24:32] <nicko> gandixximo>> cant answer your question - but I'm interested in the answer ! you're taling about a CNC grinder?
[03:25:32] <nicko> how does the system know how much to offset the 'tool' - is it sensor feedback - or you just trust a given rate of wear ?
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[03:41:34] <Grandixximo> well there are two ways
[03:41:40] <Grandixximo> one is with an amper meter on the motor
[03:42:00] <Grandixximo> that feels either tool is cutting or not, the other would be with a tool wear rate
[03:42:12] <Grandixximo> i personally like more the ampere system
[03:43:23] <nicko> interesting
[03:43:34] <nicko> we were chatting about this just the other day !
[03:43:39] <nicko> in fact I brought it up
[03:43:55] <nicko> I *can* answer your question
[03:46:03] <nicko> I cant find it in google
[03:46:27] <nicko> but open up the developers manual and search for 'adaptive feedrate' or 'adaptive feed rate'
[03:46:51] <nicko> info is sparse - or should I say, examples are sparse
[03:46:59] <nicko> but its what you're talkign about
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[04:29:13] <Grandixximo> `thanks
[04:33:25] <Grandixximo> i don't find such adaptive feed rate in the development manual
[04:33:35] <Grandixximo> EMC2_Developer_Manual.pdf
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[04:35:20] <Grandixximo> but anyway adaptive feedrate it's not what i need
[04:36:48] <Grandixximo> the problem is not that the motor is forcing too much so i need to slow down, the problem is my tool is becoming smaller 1mm every meter due to waste, so i have to change the tool diameter whuile working
[04:38:07] <Grandixximo> for example i'm working with G41 with a tool D75 after i do a line of 1 meter my tool is D74 so the machine should knowledge that and calculate my trajectory accordingly
[04:40:01] <Grandixximo> To polish there are normelly 6 tools, wich have to pass on the same surface and this tools waste easily, that is why i need an adaptive radius compensation
[04:40:46] <Grandixximo> I don't think the adaptive feedrate can help me, even tough it seems useful for other porpuse
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[05:49:57] <nicko> yes, - sorry I got bit excited there prematurely
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[07:19:58] <Valen> you could make them in the tool table
[07:20:04] <Valen> then just change tools
[07:21:21] <Grandixximo> you mean i have to change tool evey line i make?
[07:21:22] <archivist_emc> Grandixximo, or taper the cut knowing the wear rate
[07:21:41] <Grandixximo> i know the wear rate
[07:21:47] <archivist_emc> which will vary by diameter
[07:21:50] <Grandixximo> what you mean taper the cut?
[07:23:05] <Grandixximo> Sorry i don't get you, can you explain?
[07:23:18] <archivist_emc> add a wear term to the finish location
[07:26:26] <Valen> if you move 1mm in Y by the end of the cut
[07:26:35] <Valen> rather than G1 x100
[07:26:41] <Valen> G1 x100 Y1
[07:27:19] <Grandixximo> Well yes i could manually calculate all the positions, but i don't want to do it
[07:27:47] <Grandixximo> And what about radiuses the calculation would be more difficult done manually
[07:28:10] <Grandixximo> how do you add a wear term?
[07:30:23] <Grandixximo> write in the Gcode a G10 command to reduce the tool after every movement would work if you are working in G41-G42 radius compensation?
[07:30:47] <Valen> you could perhaps hook in to something to change the radius whilst its cutting
[07:31:40] <Grandixximo> Ok would that work has someone try before? where should i start at?
[07:32:52] <Grandixximo> Changing the radius while it's cutting sounds good, but are we sure that would work?
[07:33:23] <Grandixximo> I tryed changing the tool diameter in the tool table while machine is working and nothing happens
[07:33:40] <archivist_emc> look at the torch hight control and how it was implemented, add a live tool measurement facility and create a something to suit
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[07:41:02] <Grandixximo> I think the problem would be for EMC2 to read my tool diameter changes
[07:41:51] <Grandixximo> I understand how i could make the tool decrease with a tool measuring facility, but how do i make EMC2 read the tool diameter changes while working?
[07:42:47] <Grandixximo> the axis are always controlled so if you tell EMC to change them they will move, but are tool diameter always in control?
[07:59:25] <archivist_emc> read the torch height control, it compensates live, in that case its material warp and tool wear and Z
[08:00:11] <archivist_emc> tool table is not read live
[08:00:42] <Grandixximo> i understand but he is working with Z i have to work with X and Y and Z only works from up, so incrementing it's easier than a tool that work in a hole one time touching left one time touching right
[08:01:53] <archivist_emc> you need to write your own methods of compensation, I dont think this has been done yet
[08:03:37] <Grandixximo> i mean he either has to go up or down, and if he got a dislevel either always down or always up, but my tool is becoming smaller while i work, and sometime i work on the left sometime on the right ecc.. of the tool that mean that only a live tool diameter reader could increment me the right way
[08:03:44] <archivist_emc> the closest possibly for you is the kerf compensation than micges did for laser cutting
[08:04:26] <archivist_emc> Im expecting you to take the concept and apply it to other axes
[08:05:32] <archivist_emc> I dont expect it to be a simple re-use of current code
[08:06:03] <Grandixximo> it would not work unless i know what side of the tool is touching my piece
[08:06:21] <Grandixximo> Can i know that?
[08:08:39] <Grandixximo> Is it not more easy to make EMC2 read the tool table live?
[08:09:22] <archivist_emc> its complex, I think the path it set ahead with offsets included so there is no live contact point offset vector, unless you add it to the code
[08:16:03] <Grandixximo> Is it not easier to change the tool diameter while working with X-Y and force EMC to go get the tool diameter live and change the G41 according?
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[08:17:31] <archivist_emc> no
[08:18:51] <archivist_emc> I think you should read about the trajectory planner and how the tool offsets work and how paths are calculated
[08:19:25] <archivist_emc> or, use better tooling that does no wear so fast
[08:20:32] <Grandixximo> it's 25 years we work with this kind of tools we know they wear but they are the only way to polish stone
[08:20:54] <Grandixximo> It's not the quality of the tools really
[08:23:41] <archivist_emc> I have seen very large diameter tooling used in grinding to minimise the wear rate
[08:24:34] <archivist_emc> but you can modify the source to add live wear compensation, I dont expect it will be easy
[08:25:52] <archivist_emc> look at this http://wiki.linuxcnc.org/emcinfo.pl?Laser_Beam_Compensation
[08:26:49] <archivist_emc> and the resultant hal module http://wiki.linuxcnc.org/emcinfo.pl?LaserBeamCompensation#Hal_module
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[08:29:23] <Grandixximo> enable correction according of direction of current move
[08:31:22] <archivist_emc> you want the override with wear instead, just modify accordingly
[08:32:14] <Grandixximo> yes i think it could work, i'll look into it, thanks a lot
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[08:43:31] <Grandixximo> <archivist_emc> are you still here?
[08:45:13] <Grandixximo> To override Z axis movement the first step is to decouple the axis.X.motor-pos-cmd from the stepgen.X,
[08:45:14] <Grandixximo> this enables us to override the target coordinates for the Z axis.
[08:45:14] <Grandixximo> We must still enable the user to manually jog the axis when cutting is not in progress, to do this we use a mux
[08:45:14] <Grandixximo> controlled by the LockPierceHeight signal, if we have an LockPierceHeight signal we disconnect the Z axis input signal and forward
[08:45:14] <Grandixximo> the feedback coordinates instead of the requested coordinates. The feedback coordinates are the current position.
[08:45:17] <Grandixximo>
[08:45:19] <Grandixximo> The next step is to determine if we have a senseUP or senseDown signal, in case one of them is active we want to
[08:45:22] <Grandixximo> move the Z axis up or down correspondingly until the signal is deactivated. This is done by muxing each direction
[08:45:25] <Grandixximo> independently, if a signal is active the target coordinate forwarded will be set to the maximum (Down movement) or
[08:45:28] <Grandixximo> minimum (Up movement) allowed for the Z axis as configured by the user. Finally we mux the results from both
[08:45:31] <Grandixximo> directions using the senseZDown signal to switch between them. Keep in mind that if neither SenseUP or SenseDown
[08:45:36] <Grandixximo> signals are active the original signal will be passed through, this signal is either the feedback or the coords
[08:45:39] <Grandixximo> requested by the user/gcode.
[08:45:47] <Grandixximo> I have just read this and it's a letdown
[08:46:39] <Grandixximo> since they override Z when they get the sensor, i cannot acoutally follow a G-code and override XY to increment my tools, because i would not follow the G-code
[08:47:56] <Grandixximo> X and Y would move only of my overrided dimension, they will not follow the Gcode since it's overrided
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[09:02:10] <Grandixximo> In the torch height control the Z is not controlled by Gcode no more, it's only controlled by the sensor that touch the plate to cut, you can write whatever you want in the Gcode the Z would always follow the sensor, the sensor is feeded by the X and Y movement, in my case i need to follow the direction feeded by the Gcode for X and Y, i can't override them, it would maybe be easy when i'm making straight lines since i have to override the axis that is
[09:02:10] <Grandixximo> not moving, but what about when i'm making a 45 degree line i can't override either of the axis since both need move
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[10:20:07] <ufukizgi> hi everybody
[10:20:45] <ufukizgi> while I'am compiling EMC
[10:20:49] <ufukizgi> checking for glib... configure: error: no -- required until somebody makes modbus optional
[10:21:17] <ufukizgi> writes, and stop.
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[10:26:34] <ufukizgi> sorry the last error is:
[10:26:36] <ufukizgi> checking for BWidget using /usr/bin/tclsh8.5... configure: error: not found
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[10:42:48] <Ox90> exit
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[11:34:45] <cysign> hi, anybody there?
[11:35:08] <cysign> i have problems registering to the linuxcnc-forum...
[11:35:37] <cysign> i don't get the confirmation mail... neither in inboxfolder nor in spamfolder...
[11:36:07] <cysign> admin, if u read this... could you resend confirmation for "cysign"? or could u mnually activate my account?
[11:36:43] <cysign> since I get the message "not a com R32 image" when I try to boot my ubuntu 10.04 with emc.... i need help in the forum...
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[11:38:43] <jthornton> I don't see that username, try registering again
[11:38:52] <cysign> i tried it twice
[11:39:15] <cysign> on my second shoot i got the message, that I'd already be registered
[11:40:03] <jthornton> let me look again in a different spot
[11:40:34] <cysign> You are already registered with this username and password. Registration Complete! An email with further instructions on how to complete your registration has been sent to the email address you provided. Please check your email (including your spambox) to complete your registration. To have the email sent again, simply try logging in with the username and password of your registration.
[11:42:31] <cysign> ah, I recived the confirmation-mail right now!
[11:42:37] <jthornton> ok
[11:42:52] <cysign> thx 4 ur help :)
[11:42:57] <jthornton> np
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[12:38:22] <jthornton> /me installs EMC2 on the D525
[12:38:34] * jthornton ...
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[13:13:43] <jthornton> dam disk is bad
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[13:18:50] <IG-garage> what is D525 ?
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[13:21:06] <jthornton> motherboard
[13:21:14] <jthornton> atom motherboard
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[15:03:35] <Tom_itx> jthornton you broke down and got a D525?
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[15:17:48] <JT-Shop> yea
[15:18:14] <JT-Shop> one of my D510's lost Ethernet
[15:18:39] * JT-Shop puts the sheetrock tape away as it is not needed anymore :)
[15:28:21] * anonimasu looks at a grinder
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[16:15:59] * IG-garage was in his garage
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[16:19:03] <IG-garage> used angle grinder to clean the gas tank of motorcycle. Damn wheels - one lacks 2 spokes and another one lacks 1 spoke, and aluminum of hubs is dirty
[16:21:26] <SWPadnos> jthornton, did the ethernet port die completely, or did it just lock up from time to time?
[16:21:42] <IG-garage> from now on, I will plan to visit my garage regularly for about half an hour - but for somewhat more time in fact. First, to clean and cover the gas tank, then to make wheels look good.
[16:21:48] <SWPadnos> err - JT-Shop ^^
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[17:00:13] <JT-Shop> SWPadnos: AFAIK it died and never came back
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[17:03:44] <IchGuckLive> Hi all around the world
[17:03:58] <IchGuckLive> Amy winehouse past awaay today
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[17:13:08] <JT-Shop> nap time
[17:13:20] <Tom_itx> agreed
[17:13:32] <Tom_itx> mowed, edged, washed the car
[17:13:36] <Tom_itx> definitely
[17:14:08] <IchGuckLive> hows the head in the USA
[17:14:33] <Tom_itx> heat is heat
[17:14:42] <IchGuckLive> the Americans around here started today at 5Deg the househeaders
[17:14:43] <Tom_itx> no end in sight
[17:14:50] <Tom_itx> 3 digits again today
[17:21:50] <IG-garage> Amy winehouse?
[17:23:16] <IG-garage> we once worked on the crane, were fixing it, in 60 celsius above the working steam boiler (coal power plant) so the metal were starting heating your legs through the boots.
[17:27:19] <syyl_> amy-who?
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[17:37:36] <ktchk> Hi kimk
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[18:21:06] <IG-garage> syyl_: that singer
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[18:40:16] <Fox_Muldr> hi. i try to build a little tool length probing sequence with help of g38.2 and g38.4. i want to do it like the homing sequence when for example the x axis moves towards the switch with full speed until the switch is closed. after that move with low speed backwards until the switch opens. using g38.2 works as expected and the z axis moves until the probe switch is closed. but when i try to use g38.4 afterwards i get the error message "pr
[18:40:16] <Fox_Muldr> obe is already clear when starting g38.4 or g38.5 move. no matter if the probe switch is still closed or open. does g38.2 and g38.4 maybe use different internal hal signals? i only mapped "motion.probe-input" in my hal file to the corresponding probe switch
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[18:46:17] <IG-garage> why not chase the aliens? :)
[18:46:41] <Fox_Muldr> not until my cnc works as i expect it to do ;)
[18:50:52] <danimal_garage> anyone know about galil motion control boards?
[18:53:18] <danimal_garage> i have a dmc-630 that was in a computer that came with my little desktop mill
[18:53:41] <IG-garage> danimal_garage: may I ask not CNC-related question? What is the best way to finish (as for polishing) the aluminum? I used abrasive rubber but I can not anymore buy these tools locally for my mini-drill... Want clean hubs of two wheels...
[18:54:15] <IG-garage> hey guys, can i make any use of old printers (A4 and A3) ?
[18:54:33] <IG-garage> there are steppers in there, right?
[18:56:54] <anonimasu> anything special I need to do to wire up encoders into the 7i47?
[18:57:05] <anonimasu> like ground the rxa0-?
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[19:01:34] <IG-garage> questions with no unswars, my dearest freds, probably rhetoric ones
[19:05:11] <danimal_garage> IG-garage: i don't know, manybe a sewn cloth wheel and rouge?
[19:05:26] <danimal_garage> i don't typically polish stuff
[19:05:29] <IG-garage> well, maybe...
[19:06:47] <IG-garage> i have cleaned couple of hubs for my first motorcycle. Such thingies for mini drill, 2 for one hub, one per 40-50 cents, green abrasive rubber
[19:08:26] <danimal_garage> hmm this motion control board looks a little pricey, maybe i should sell it and buy the mesa
[19:08:27] <IG-garage> this is *finishing*, not polishing, also close to it. surface is still shiny, just because it's smooth
[19:09:19] <IG-garage> *although
[19:14:20] <IG-garage> Most famous rouge in Russia is green rouge made of chromium oxide, in three degrees of fineness, mostly used to polish glass
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[19:15:17] <IG-garage> 'State Optical Institute' SOI-1,2,3 ГОИ-1, 2, 3
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[19:38:04] <archivist> anyone have any spare 1 3/8 ns tooling smaller than its in between iso 30 and iso 35, damned oddball size
[19:44:25] <IG-garage> archivist: motors and details from printers worth something? Have found couple of printers at scrape yard
[19:45:36] <archivist> not much use, often not powerful enough
[19:46:08] <IG-garage> even for engraving?
[19:47:11] <IG-garage> but can i try use them without any board? Just want to get closer to electrics, having, i'm bachelor of mechanics - who doesn't know electronics at all :)
[19:47:19] <archivist> they can just about move the printers head, think about extra weight and cutting forces
[19:48:44] <anonimasu> did anyone make a grinder run with emc?
[19:48:45] <IG-garage> yeah, i know, but don't just cras my dream!
[19:48:46] <anonimasu> surface grinder?
[19:49:15] <IG-garage> it's like I/O human-powered switch at the angle grinder?
[19:49:29] <ds3> how would a CNC grinder be used?
[19:49:50] <IG-garage> j/k it will have standard type of G-vode for the moves
[19:49:58] <ds3> seems all the grinding techniques start with a touch off and go from there to avoid blowing up the wheel
[19:50:09] <archivist> anonimasu, we do have a user making a stone grinding machine, he was asking questions this morning
[19:50:41] <archivist> he wanted to cater for wear during a cycle
[19:50:49] <IG-garage> why not? X, Y, and Z axes
[19:54:43] <anonimasu> I'd make a probe routine instead
[19:55:06] <anonimasu> so after a pass I can go and touch off my wheel with a optical sensor
[19:55:31] <IG-garage> it's a series of moves: longitudinal ones, then to the side, and finally a step lower
[19:55:36] <anonimasu> yep
[19:55:50] <anonimasu> tho, I'd make it better with a plc..
[19:56:11] <anonimasu> smart servo on the y axis and ahuydralic feed on the x...
[19:56:22] <anonimasu> and a servo on z with glass scale feedback
[19:56:32] <IG-garage> idea to use software instead of schemes helps to reduce building time and costs
[19:56:42] <anonimasu> schemes?
[19:57:03] <anonimasu> a plc and a 2 axis controller card
[19:57:17] <anonimasu> and 5 hours of work
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[19:58:37] <anonimasu> nothing specially complex
[19:58:50] <archivist> anonimasu, his is during the cut though, :-
[19:58:51] <archivist> the problem is not that the motor is forcing too much so i need to slow down, the problem is my tool is becoming smaller 1mm every meter due to waste, so i have to change the tool diameter whuile working
[19:59:30] <anonimasu> i read about this before today
[19:59:37] <archivist> something that currently is not in emc
[20:00:05] <anonimasu> they do longitudal passes from one side because that lets the wheel wear one side
[20:00:24] <anonimasu> and it wont wear much until a cycle is done
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[20:01:16] <anonimasu> archivist: food for thought.
[20:01:27] <IG-garage> the passes are parallel to the wheel
[20:01:45] <anonimasu> yeah but only the side of the wheel cuts, not full width ones
[20:02:06] <IG-garage> only touch the surface, only produce sparkles, use hundreds part of the millimeter
[20:02:10] <anonimasu> so there's material left on the whell to clean up for wear over the surface
[20:02:47] <IG-garage> it cuts randomly, you move it to the side on its width
[20:02:49] * archivist spots a huge amount of miss understanding and buggers off into the garage
[20:02:56] <anonimasu> archivist: what if you were to probe your tool in cycle
[20:03:28] <anonimasu> like with a macro, and then you comp the position reading during a few cycles
[20:03:31] <anonimasu> so you dont ferror
[20:03:38] <anonimasu> (if the z depth is the problem)
[20:05:12] <IG-garage> archivist: several lines within O-cycle, starting Z and your control... Only 4 ans half an hour of work
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[20:29:39] <alex4nder> hey
[20:30:39] <IG-garage> iyou dude
[20:31:11] * anonimasu garage-irc's
[20:31:54] <Jymmm> You think the latest release could run on a P3 1Ghz with 512MB ?
[20:35:36] <anonimasu> which damn pins should I wire up to my 7i47?!
[20:42:01] <Tom_itx> all of them
[20:42:20] <anonimasu> for enc input
[20:42:24] <Tom_itx> do dmesg
[20:42:26] <Tom_itx> to find out
[20:42:41] <Tom_itx> after you load the pin file
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[20:46:42] <anonimasu> im trying to see if I have encoder signals
[20:46:48] <anonimasu> but my board dosent blink or anything
[20:47:09] <Tom_itx> are they open collector?
[20:47:17] <Tom_itx> maybe you need pullups or something
[20:48:08] <anonimasu> they are grounded on the - signals
[20:48:13] <anonimasu> and go to 5v
[20:49:15] <pcw_home> 7I47 is for differential encoders only (not TTL)
[20:49:32] <Tom_itx> i used them with the resistor thing
[20:49:34] <anonimasu> um, cant you use them for that, if you gound one side?
[20:49:35] <Tom_itx> and they work
[20:49:51] <Tom_itx> anonimasu, add a resistor divider to the other side
[20:49:56] <Tom_itx> i forget the values
[20:50:09] <anonimasu> boring.
[20:50:16] <anonimasu> nothing just works without a mess
[20:51:10] <pcw_home> Differential encoders do :-)
[20:51:24] <anonimasu> well, my chip for converting signals didnt come with that option
[20:51:48] <anonimasu> :/
[20:52:02] <pcw_home> Probably a 7I52 would have been better
[20:52:53] <pcw_home> 7I47 is basically a RS-422 interface (in and out)
[20:53:41] <anonimasu> but I remember you talked about using the inputs as single ended instead...
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[20:54:50] <Tom_itx> i think i used 680 ohm
[20:55:51] <pcw_home> The reason just grounding the - input does not work is that the + input needs to go above and below the -input
[20:55:53] <pcw_home> Yes you can use the but you need to 1. turn off the termination 2. bias the - inputs(s) 1/2 way up say with 2 low value resistors
[20:56:22] <pcw_home> use the inputs as single ended
[20:57:35] <anonimasu> I have some 250ohm, somewhere.. I think but that might be too small
[20:57:45] <pcw_home> 7I52 (or just 7I42 breakout) would be better for this, or just bare FPGA pins if you are careful...
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[20:58:43] <anonimasu> ordering more stuff this week/month is not a good option
[20:58:57] <pcw_home> even 1.8 w would be fine, 250+250 = 500 Ohm = 10 mA = 25 mW per resistor
[20:59:05] <pcw_home> 1/8W
[20:59:47] <danimal_garage> pcw_home: does the 7i48 have the same size card as the 7i33?
[20:59:56] <danimal_garage> and is the pinout the same?
[21:00:00] <pcw_home> that gives you 2.5V with a 125 Ohm source impedance
[21:01:16] <anonimasu> just bridge gnd and + to the - input on the board?
[21:02:05] <danimal_garage> i didn't see the mounting hole layout in the manuals
[21:02:07] <pcw_home> Yes make a voltage divider from +5 and ground (2.5V) and use theis 2,5V to terminate all the -inputs
[21:04:18] <pcw_home> danimal I'd have to look at sizes. the 7I48 has three terminal blocks instead of two
[21:04:20] <pcw_home> pinout is basically the same but 7I48 has opto isolated enable+ enable- outputs (10 mA max)
[21:05:05] <pcw_home> rest is the same (encoder pinout analog pinout etc)
[21:05:15] <danimal_garage> it looked the same size in the picture
[21:05:19] <danimal_garage> but hard to tell
[21:05:30] <anonimasu> well, no resistors :@ fuck it.
[21:05:45] <pcw_home> Also on the 7I48 all enables are driven by a common signal (no individual enables)
[21:05:49] <danimal_garage> i just want to make sure it bolts up to my standoffs that i'm using for my 7i33
[21:06:05] <anonimasu> im just gonna pick up the 400 nails i made fall down in the search for resistors...
[21:06:58] <danimal_garage> pcw_home: ouch, i couldnt run the 3 drives off of one enable with the 7i33, not enough current i'm assuming. I had to wire them seperately.
[21:08:47] <pcw_home> freeby.mesanet.com/7i48mech.pdf
[21:09:28] <danimal_garage> thanks
[21:09:40] <danimal_garage> i'm ordering one Monday
[21:09:45] <pcw_home> You have 6 enable outputs so they can be wired individually (just logically driven by EMC at once)
[21:09:59] <danimal_garage> ah sweet
[21:10:33] <danimal_garage> i just wanted to make sure it was as plug and play as possible, i didn't want to open a can of worms
[21:10:43] <pcw_home> unlike the 7I33 they can be used for 12 and 24V enable inputs (as log as you are not driving a relaly or more than 10 mA)
[21:10:57] <pcw_home> s/log/long/
[21:11:01] <danimal_garage> nice
[21:11:45] <danimal_garage> the computer that came with that little cnc machine i got had a galil motion control board in it
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[21:11:54] <danimal_garage> a dmc-630
[21:12:21] <pcw_home> anonimasu, there probably a really wierd hack you can do to get the 2.5V by using an unused channels termination resistors
[21:12:24] <danimal_garage> probably worth something to the mach crowd i'd assume, huh?
[21:12:45] <pcw_home> Yeah Mach has a Galil plugin
[21:12:53] <danimal_garage> sweet
[21:12:58] <danimal_garage> it's a 3 axis board
[21:13:15] <danimal_garage> i'll ebay it to pay for the 7i48 :)
[21:14:09] <danimal_garage> i got a Bosch Colt router to use as a spindle
[21:14:35] <pcw_home> Only real difference with the 7I48 and 7I33 setup is the PWM mode and freq
[21:15:22] <danimal_garage> cool
[21:15:32] <danimal_garage> i'm excited, that gives me room for a 4th axis
[21:15:57] <danimal_garage> then i'll take the 7i33 and put it in that mini mill
[21:16:29] <pcw_home> 7I48 is PWM, Mode 2, and 24 KHz instead of PDM mode 1 at 6 MHz for the 7I33
[21:16:55] <danimal_garage> mode 1 is default, so there isn't a parameter for that stuff in the hal, right?
[21:17:01] <danimal_garage> or is there... i havent looked yet
[21:17:29] <pcw_home> Was that an inkjet marker?
[21:17:31] <pcw_home> its a parameter on the PWMgen
[21:17:43] <danimal_garage> pcw_home: yes
[21:18:10] <pcw_home> and the PWM freq is a parameter as well
[21:18:13] <danimal_garage> suprisingly beefy for a printer
[21:18:54] <pcw_home> was the inkjet stuff missing?
[21:20:32] <danimal_garage> yes
[21:20:38] <danimal_garage> otherwise i'd try and use that
[21:21:14] <danimal_garage> the nozzles are like 15k the guy told me
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[21:21:43] <danimal_garage> for that price, i'd buy a laser
[21:22:02] <danimal_garage> for now, i'll go the cheap route and engrave
[21:22:25] <pcw_home> Ahh so they robbed the head, thats kind of weird
[21:22:28] <danimal_garage> i'll only have like $350 invested into the whole machine
[21:22:49] <danimal_garage> pcw_home: yea, i thought so too...
[21:23:41] <danimal_garage> 35000rpm and 600ipm should make this thing a speedy little engraving machine
[21:27:19] <pcw_home> quite a deal for a small servo driven router
[21:27:39] <danimal_garage> yea i'm excited
[21:27:48] <danimal_garage> if only i could get it out of my van lol
[21:28:01] <danimal_garage> i'm waiting for my friend to come over to help
[21:28:40] <danimal_garage> i wish i had a good cart
[21:28:40] <anonimasu> pcw_home: that sounds alot easier for me
[21:29:08] <anonimasu> pcw_home: do i just bridge another channel to the - one of the ones i want to use?
[21:33:33] <anonimasu> sorting mixed brass nails, is therapeutic.
[21:43:23] <Tom_itx> to a point
[21:44:40] <Tom_itx> is the 7i33 a general io buffer?
[21:45:17] <Tom_itx> i can't keep track of all these boards...
[21:46:30] <anonimasu> me neither
[21:46:55] <anonimasu> Tom_itx: i'll go for your suggestion about the wiring, but tomorrow I have no resistors like that at home
[21:46:58] <anonimasu> they are all at work
[21:48:16] <danimal_garage> 7i33 is an analog servo board
[21:48:24] <danimal_garage> 4 channel
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[22:00:00] <pcw_home> Anonoimasu: Ya, disable termination on the channels you want to be TTL, enable termination on 2 unused channels (of say enc 3)
[22:00:02] <pcw_home> so then connect enc3A+ to 5V enc3A- to enc3B+ and enc3B- to ground. Now the junction of enc3a- and enc2B+ is your 2.5V reference
[22:00:04] <pcw_home> (you have just made a 2 --> 1 voltage divider out of 2 termination resistors)
[22:00:49] <pcw_home> s/enc2b+/enc3b+/
[22:02:10] <anonimasu> seems like a neat hack
[22:02:28] <anonimasu> :)
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[22:13:51] <danimal_garage> sweet... i forgot i had some aluminum plate stashed fora special occasion. Now i can make my spindle mounts
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[22:17:55] <mrsunshine> gah, have to go buy the plates that i found on the scrapheap, 10mm thick and like 40x40 cm or something
[22:18:02] <mrsunshine> dont know if its a good price but =)
[22:18:02] <Guest977> m using EMC2 since 2 years now i want to start development .. may be its a silly question but FROM where to start?? i started from "autogen.sh" but it really terrified idea.
[22:18:18] <Guest977> is there any step by step documentation for beginners??
[22:18:20] <mrsunshine> 12$ a piece or something like that
[22:18:24] <anonimasu> dont worry, check the wiki
[22:18:51] <Guest977> i read wiki pages..even i read integrator manuals and all.. now problem is source :(
[22:18:55] <danimal_garage> sounds pricey mrsunshine
[22:19:01] <mrsunshine> ahh it is? :/
[22:19:18] <mrsunshine> dont know the pricing
[22:19:23] <danimal_garage> for scrap, seems like it
[22:19:26] <mrsunshine> so, i thought it was "good" =)
[22:19:27] <danimal_garage> aluminum?
[22:19:30] <mrsunshine> danimal_garage, alu yes
[22:19:47] <danimal_garage> shouldn't pay more than $2 an lb for scrap
[22:20:05] <anonimasu> pcw_home: junction?
[22:20:15] <mrsunshine> danimal_garage, well this person is kinda greedy, when he sees your interested he beefs the prices
[22:20:20] <danimal_garage> ah
[22:20:23] <anonimasu> does that i need a wire from + and - to make it work?
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[22:29:45] <pcw_home> yes you first make a 2.5V reference for all your -inputs by tying two terminated inputs in series (the terminated in-,in+ pairs are like a floating 120 Ohm resistor)
[22:30:48] <IG-garage> danimal_garage: just used stripes of very fine sandpaper, good finishing for aluminum
[22:31:11] <danimal_garage> cool
[22:31:12] <anonimasu> you mean like this
[22:31:50] <IG-garage> Have taken some A2 printer (Epson) and some regular A4 one, no covers, rigid frame, 4 wires from some motors
[22:31:51] <anonimasu> connect rx3 to + and rx3/ to rx4 and rx4/ to gnd?
[22:32:44] <IG-garage> it's 5:30 AM and I'm back from garage. Had been thinkin' of it 'hole nigh' lon'
[22:32:48] <pcw_home> so for the terminated inputs you are using just for the resistor:
[22:32:50] <pcw_home> in3A+ to 5V in3A- to next terminated input (say in3B+) then in3B- to ground
[22:32:52] <pcw_home> yes exactly with the rx3/ RX4 junction being your 2.5v reference
[22:34:35] <JT-Shop> dang my butt is sore
[22:34:55] <Tom_itx> stop sitting on it so much
[22:35:15] <danimal_garage> JT-Shop, hot date?
[22:35:18] <JT-Shop> been riding the bike for the last 4hrs in this 95F heat
[22:35:23] <Tom_itx> ahh
[22:35:27] <JT-Shop> yep hot all right
[22:35:30] <danimal_garage> haha
[22:35:38] <Tom_itx> at least you have fun places to ride
[22:35:45] <danimal_garage> doesnt your bike have a/c?
[22:35:49] <Tom_itx> nice winding roads etc
[22:35:56] <JT-Shop> only thing missing Dan
[22:37:11] <JT-Shop> we drove 200 miles for some stack stick casings LOL
[22:37:18] <JT-Shop> and for a ride
[22:37:50] <anonimasu> pcw_home: it works!
[22:37:51] <anonimasu> :)
[22:37:54] <anonimasu> alot neater then ext resistors
[22:37:58] <Tom_itx> woo hoo
[22:38:12] <JT-Shop> YEA!
[22:38:26] <anonimasu> we'll see if the encoder talks.
[22:38:28] * JT-Shop wanders off to the kitchen to get the meat ready for stuffing
[22:38:29] <anonimasu> soon :)
[22:38:44] <IG-garage> May I ask, bearings in screwdrivers are more robust than at the lightweight drill of the same price?
[22:39:04] <pcw_home> well there were some resistors around after all...
[22:40:05] <IG-garage> JT-Shop: Sauerkraut + boiled potato, optionally some rough bread (I'll have such a nap soon)
[22:42:07] <IG-garage> Speaking from the experience of old single virgin, clean pans gradually improve the taste. So does clean pants - they improve one's performance.
[22:42:54] <anonimasu> pcw_home: I see blinking of the led's but I get no encoder data
[22:42:58] <Jymmm> try soap some day
[22:43:07] <IG-garage> already
[22:46:19] <anonimasu> can I somehow just see that I get signal input on the pins?
[22:49:27] <IG-garage> Already (5:30 AM) it's a 'soap Sun day'. I only have two pans, and therefore Sunday is not enough. Soap Tuesday, Thursday, and dirty Saturday are implemented. :)
[22:51:48] <anonimasu> I have 5v in on rx0 and 2.5 on rx0/
[22:51:56] <anonimasu> and the same for rx1 and rx1/
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[22:55:54] <pcw_home> the LEDs are on the FPGA side signals so you have encoder data
[22:56:18] * IG-garage thinks of small wind turbine generator made of his stepper motors from printers
[22:57:27] <pcw_home> did you check the dmesg for the pinout?
[22:58:54] <anonimasu> yes
[22:59:01] <anonimasu> I have input on the gpio pins now
[22:59:12] <anonimasu> when i move the port to the other one
[23:01:13] <pcw_home> you should still have readable GPIO pins on the encoder inputs
[23:03:05] <anonimasu> let me see
[23:04:40] <anonimasu> gpio 4 toggles
[23:05:01] <anonimasu> but I cant see anything on the other gpio pin
[23:06:45] <pcw_home> well with encoders it takes two to tango...
[23:07:01] <anonimasu> but why not? the led stops blinking when emc starts
[23:07:10] <anonimasu> the input led for the second channel
[23:07:22] <anonimasu> cr9
[23:07:32] <pcw_home> sounds like you have it on the wrong connector
[23:08:12] <pcw_home> and are over driving the 7I47s encoder output with a FPGA output
[23:08:25] <anonimasu> they are ont he enc0 pins
[23:08:34] <anonimasu> err enc1
[23:08:58] <pcw_home> P4?
[23:09:20] <pcw_home> (assuming 7I43)
[23:09:27] <danimal_garage> are cellerons suitable processors for emc, typically?
[23:09:34] <anonimasu> yes
[23:09:39] <danimal_garage> i know it's on a case by case basis, but..
[23:09:58] <pcw_home> yes P4?
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[23:10:43] <anonimasu> I took the wiring for gnd and stuff from the datasheet
[23:11:11] <pcw_home> 7I47 goes to 7I43 P4?
[23:11:50] <anonimasu> yes
[23:14:35] <anonimasu> can I somehow move it to p3 and test?
[23:14:41] <anonimasu> so I didnt screw a pin up or something
[23:14:55] <pcw_home> And when the 7I47 is on P4 (the inner 7I43 connector) one of the encoder LEDS stops blinking when EMC runs?
[23:15:03] <anonimasu> yes
[23:15:09] <anonimasu> only when it runs not before i start it
[23:17:09] <pcw_home> and the dmesg lists the encoders on P4 (GPIO 0 through 23)?
[23:17:57] <pcw_home> (and I assume you are sure you are using the new bitfile)
[23:18:43] <anonimasu> no, im not right now, im using the default just to see that I have anything on the input
[23:18:46] <anonimasu> the included servo one
[23:18:56] <anonimasu> i didnt hook up the rj45 board yet
[23:19:37] <pcw_home> Well then its expected to not work (not the right pinout for the 7I47)
[23:20:12] <anonimasu> wtf.. :) i thought the bitfile in the example contained the right stuff for it
[23:20:30] <anonimasu> svst4_4s.bit(the included with the official dist)
[23:21:16] <anonimasu> im sorry, i were being stupid i thought i read that it's that board in the config stuff
[23:21:22] <pcw_home> No thats for our Hbridges or 7I33
[23:21:36] <anonimasu> im gonna load up the right one tomorrow and see what happens :)
[23:22:08] <pcw_home> Just shows the FPGA has stronger outputs than the 7I47 :-)
[23:22:17] <anonimasu> :D
[23:23:34] <anonimasu> mhm, im gonna try it now even if it's late so I can see if today was waste effort :)
[23:24:56] <pcw_home> may bail on the sserial thing if you dont have 2.5 and the latest patches but worth a try
[23:25:45] <anonimasu> i grabbed one from git earlier but not compiled yet
[23:27:41] <pcw_home> good luck, got to go to the feed store 'for they close
[23:27:46] <pcw_home> bbl
[23:34:05] <anonimasu> dosent work need a newer emc
[23:34:08] <anonimasu> tomorrow.
[23:34:09] <anonimasu> :)
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[23:57:53] <danimal_garage> part one of spindle mount done!