#robotics Logs

Aug 20 2018

12:16 AM Arirang is now known as Guest17082
03:43 AM logicmoo is now known as dmiles
04:56 AM veverak: well
04:58 AM veverak: for some reason my stm32 acting as slave does not 'ack' the data
04:58 AM veverak: which is interesting
04:58 AM veverak: as there is write, than read, which passes
04:58 AM veverak: than starts another write.. (ACKed) and first byte of that write is not ACKed
05:17 PM _unreal_: Ok one more time slightly different crowd of people in here. any one think these are total crap or a rip off? https://www.amazon.com/Nema23-Stepper-FMD2740C-Breakut-Controller/dp/B07236CFKC/ref=sr_1_8?ie=UTF8&qid=1534735983&sr=8-8&keywords=cnc+controller
05:20 PM Tom_L: hefty steppers, mine are 570
05:20 PM Tom_L: https://www.ebay.com/itm/3pcs-NEMA23-570OZ-IN-5A-3-8-DUAL-SHAFT-STEPPER-MOTOR/253223632606?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
05:20 PM Tom_L: probably not a bad combo deal
05:21 PM Tom_L: ask over there if those drivers are ok. i'm not that familiar with the chinese drivers
05:22 PM _unreal_: That one driver is $100
05:22 PM _unreal_: That kit I posted is 4 motors WITH driver and a psu and a breakout board for $340
05:22 PM _unreal_: even if they are low quality its prob still way more then I need
05:23 PM Tom_L: 3 steppers
05:29 PM Tom_L: i was looking for the largest nema23 steppers i could find and that's what i came up with
05:38 PM Tom_L: the 36v power supply is better than 24 but higher is better
05:38 PM Tom_L: you get better step rates
05:39 PM Tom_L: it's a good all around kit if that's what you're looking for
05:53 PM Tom_L: https://www.ebay.com/itm/US-Free-Ship-3-axis-nema-23-stepper-motor-435oz-in-31kg-cm-drivers-cnc-kit/262510104370?hash=item3d1ed24f32:g:gtcAAOSwW7JbcSuL
05:53 PM Tom_L: same basic idea without the control board
05:53 PM Tom_L: _unreal_,
05:54 PM Tom_L: that and a 7i96 would get you set up
05:55 PM Tom_L: afik
05:55 PM Tom_L: so they're charging 100 bux for the control board
05:56 PM Tom_L: the 7i96 is 119
05:57 PM Tom_L: pretty much a wash but a better controller
05:57 PM _unreal_: Thats dont know anything about the 7i96
05:57 PM Tom_L: ethernet IO card set up for stepper control
05:57 PM Tom_L: for use with linuxcnc
05:58 PM Tom_L: would require a pc running preempt-rt linux
05:58 PM Tom_L: i've got 2 ethernet cards i'm testing
05:58 PM Tom_L: that's a newer card that doesn't require a daughter card for the IO isolation
05:59 PM Tom_L: it's all built on the card
05:59 PM _unreal_: hum
05:59 PM Tom_L: http://store.mesanet.com/index.php?route=product/product&product_id=311&search=7i96
06:00 PM Tom_L: also has sserial so you can expand the IO with an additonal sserial card if you need more IO
06:00 PM Tom_L: it should have enough for a basic stepper system. that's the point of the card
06:02 PM Tom_L: 4 stepgens and 1 pwm or 5 stepgens and no pwm
06:02 PM Tom_L: pwm for the spindle control
06:02 PM Tom_L: stepgens for the steppers
06:03 PM Tom_L: you need 4 axis?
06:08 PM _unreal_: I'd like to setup7
06:08 PM _unreal_: err 6
06:09 PM Tom_L: you have software to drive a 6axis mill?
06:09 PM _unreal_: XYZ, A, bc.
06:09 PM Tom_L: cad cam
06:09 PM _unreal_: ya
06:09 PM Tom_L: what?
06:09 PM Tom_L: that shit's expensive
06:09 PM _unreal_: I WORK for a super yacht company
06:09 PM _unreal_: in south florida
06:09 PM Tom_L: i know you do
06:09 PM Tom_L: just wondered what they used
06:10 PM _unreal_: we welll had a guy that was using the cad computer all the time. just got fired for being stupid
06:10 PM Tom_L: it takes an above average cnc programmer to use that stuff
06:10 PM _unreal_: I dont remember off the top of my head
06:10 PM Tom_L: i've looked at a few
06:10 PM _unreal_: autocad
06:10 PM _unreal_: full licenced copy
06:11 PM Tom_L: but i don't need 5 axis
06:11 PM Tom_L: i hope you're not using acad for cam
06:11 PM Tom_L: what a pita
06:11 PM _unreal_: I say 6 axis, because I want to do is XYZ, AN a.. then a angling HEAD
06:11 PM _unreal_: for carving.. I'm prob only building a 12" clearence
06:11 PM Tom_L: yeah
06:12 PM Tom_L: you'll need more that that for 5-6 axis
06:12 PM _unreal_: My goal is to build a micro bi-axis head unit
06:13 PM _unreal_: that uses one of the blcd high power small foot print spindles.
07:15 PM rue__: test test
07:19 PM Tom_L: pass pass
08:12 PM rue__: so you know all these dead nicks I get all wound up about?
08:12 PM rue__: it turns out their exploited computers on the internet, waiting for botnet commands
08:13 PM rue__: when a computer gets hacked, they come install an irc interfaced bot on the computer
08:14 PM rue__: it joins a network, sometimes freenode, sometimes undernet
08:14 PM rue__: all those dead nicks are bots, waiting for commands
08:16 PM rue__: Aug 20 17:52:10 t0002 sshd[32655]: Failed password for invalid user rogerio from 111.231.241.171 port 50462 ssh2
08:16 PM rue__: * [rogerio] (rogerio@gateway/shell/marcovecchiocorp/x-jyydszmquffeelum): rogerio
08:16 PM rue__: * [rogerio] orwell.freenode.net :Amsterdam, NL, EU
08:16 PM rue__: * [rogerio] is using a secure connection
08:16 PM rue__: * [rogerio] is logged in as rogerio
08:16 PM rue__: * [rogerio] End of WHOIS list.
08:16 PM rue__: I'm just gonna throw out there, thats no co-inncodince
08:21 PM orlock: rue__: The IRC-as-CNC i've seen before
08:22 PM rue__: ?
08:24 PM orlock: rue__: I've sniffed the traffic of hacked systems and seen them connecting to IRC servers, but they are usually private
08:24 PM orlock: i guess freenode/etc sticks out "less"
08:25 PM rue__: yea, did you catch the networks/channels?
08:25 PM rue__: I actaully think that #freenode is one of the control channels
08:25 PM orlock: fuck, last time would have been 15 years ago
08:25 PM orlock: and it was a private irc network
08:25 PM rue__: yea, thats the other thing, its been the same _forever_ now
08:25 PM rue__: ah
09:28 PM _unreal_: hum
09:30 PM _unreal_: rue__, just purcahsed a few more things
09:30 PM _unreal_: https://www.ebay.com/itm/272596155477
09:36 PM rue__: I dont think I can help ya
09:36 PM rue__: I can show you how to get it working with things your not interested in using
11:04 PM rue_shop4: _unreal_, the driver is working nicely so far, I just need 4 wries and a controller
11:25 PM rue__ is now known as rue_mohr