#linuxcnc-devel | Logs for 2016-05-07

[18:06:07] <andypugh> Which version of Python does the Lucif builbot use?
[18:06:17] <andypugh> (Lucid. Buildbot)
[18:55:02] <jepler> andypugh: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?MinimumSoftwareVersions
[18:55:09] <jepler> 2.7 I guess
[18:56:13] <andypugh> There is a discussion on the other channel about compiling 2.7 or master on 10.04
[18:56:27] <andypugh> I am not sure that I am giving good advice.
[19:43:26] <jepler> oh 10.04 and master branch aren't going to mix
[19:46:38] <jepler> sorry I got the name wrong the first time. I updated that page with codenames.
[21:30:00] <skunkworks> seems awfully rube Goldberg.. http://imgur.com/fiV3kx6
[21:31:18] <skunkworks> Q3 is forward - Q4 is reverse. Q1 is the brake, Q2 is Forward motor Q3 is Reverse motor
[21:31:31] <skunkworks> ugh
[21:31:48] <skunkworks> I3 is forward - I4 is reverse. Q1 is the brake, Q2 is Forward motor Q3 is Reverse motor
[21:43:33] <skunkworks> for the carousel to stop quickly - the brake and motor relay have to be on at the same time.
[21:44:01] <skunkworks> for an amount of time. seems 1/2 a second is enough - maybe less.
[21:46:04] <skunkworks> so when the motor forward signal goes low - it engauges the brake relay while keeping the motor energized for the amount of timer time.
[21:47:06] <jepler> my hat's off to anyone who takes the time to understand ladder diagrams and how to use our classicladder gui. the rest is just tedious details, right?
[21:47:12] <jepler> no wait it's all tedious details
[21:49:17] <skunkworks> it sure took a bit to get familiar with the gui again..
[21:50:02] <skunkworks> it actually feel pretty streamlined once you get used to it.
[22:13:10] <pcw_home> why do the motor and brake have to be on an the same time? seems funny
[22:15:22] <pcw_home> is the brake on the motor or somewhere else?
[22:23:11] <pcw_home> Looks like I can compile the hm2-ether firmware ROM under dosemu.
[22:23:12] <pcw_home> lets see if I got broadcast rx working or I just broke it...
[22:23:59] <skunkworks> the brake is a module from orientla motor.
[22:24:03] <skunkworks> oriental
[22:24:30] <skunkworks> I assume it does some sort of dc injection maybe
[22:24:59] <skunkworks> I couldn't find a good schematic for it
[22:25:07] <pcw_home> Ahh not a simple magnetic brake
[22:25:50] <skunkworks> http://site.motadistribution.com/Brochures/orientalmotor/ZOHO_acsb31in.pdf
[22:25:52] <skunkworks> no
[22:25:58] <pcw_home> not a magnetic friction brake I mean
[22:26:03] <skunkworks> correct
[22:26:22] <skunkworks> it stops pretty instantaneously..
[22:27:42] <skunkworks> and they way they have it wired up - it seems the braking relay - and the motor forward/reverse relay have to be pulled in for the motor to stop
[22:27:59] <skunkworks> otherwise it costs for 2 or more pockets
[22:28:24] <skunkworks> coasts
[22:28:25] <pcw_home> maybe the DC injection source needs the AC motor power
[22:29:14] <skunkworks> right - the schematics from the pdf seem to show the motor power running through the brake module
[22:31:09] <skunkworks> seems a bit odd they would go to so much trouble.. (plus the logic is a bit convoluted..)
[22:31:31] <skunkworks> maybe way cheaper than a physical brake..
[22:31:40] <skunkworks> and doesn't wear out
[22:32:07] <pcw_home> Yeah no wear, quieter