#garfield Logs

Dec 02 2014

20:55 rue_shop4 how am I supposed to know if my mic works!?
20:56 Tom_itx did all that script make it?
20:56 Tom_itx . scripts/rip.... was the last line
20:57 rue_shop4 dunno
20:57 rue_shop4 I found the bit and told you about it
20:57 Tom_itx i missed that
20:57 Tom_itx i knew it was missing packages because that's what they do with the iso
20:58 Tom_itx it's optimized for running lcnc, not for building it
20:58 rue_shop4 I found the line
20:58 Tom_itx it were several lines
20:58 rue_shop4 it uses a program to figure out of the package is isntalled
20:58 Tom_itx anyway, i got it installed last night
20:59 rue_shop4 I cant find it on this computer, the shop network dropped out
20:59 rue_shop4 check zlog
20:59 Tom_itx so i can compile any flavor on the new wheezy os
20:59 rue_shop4 ah ok
20:59 Tom_itx they've made a couple nice improvements
20:59 Tom_itx like what they're calling 'move off'
21:00 Tom_itx allows you to pause in the middle of a cut to change a tool etc and resume
21:00 rue_shop4
21:00 rue_shop4 ?
21:00 rue_shop4 ops
21:00 Tom_itx wtf
21:00 rue_shop4 sorry, leaning on keybaord apartney
21:00 Tom_itx and the TP which improves short line segments
21:01 Tom_itx 2.7 also supports ethernet cards
21:01 Tom_itx which mesa is working on
21:01 Tom_itx so instead of parport or pci, you can run from ethernet
21:03 Tom_itx i wish i could code, i'd like to help program for it
21:03 Tom_itx i did learn how to make bit files for the fpga boards
21:04 rue_shop4 huh
21:04 rue_shop4 looking at an old book for a new cnc design
21:04 Tom_itx i did one for a guy the other day
21:04 rue_shop4 does all the PID in analog
21:04 Tom_itx hmm
21:04 Tom_itx probably wouldn't matter if it was digital or analog
21:05 rue_shop4 encoder and computer generate the error that does to a dac thru the pid and to the pwm for the motor driver
21:05 Tom_itx sounds like spindle control
21:05 Tom_itx that's what they do there
21:05 rue_shop4 its for the axies
21:05 Tom_itx i know
21:05 Tom_itx alot of spindle controls use 0-10v
21:07 Tom_itx what you workin on tonight?
21:07 rue_shop4 I was going to, but then, and while I was, I noticed I should be working on,
21:07 rue_shop4 but I did change the bulb out the back door of the house
21:08 rue_shop4 so I put the new cnc back on the shelf
21:08 Tom_itx aww
21:09 rue_shop4 partly so I can have the reprap out tommorow
21:09 rue_shop4 with the new cnc, I'm haivng a cascade failure, thats gonna lead to a complete redesgin with what I can do with the welder and the lathe
21:11 Tom_itx i thought you just redesigned it
21:11 rue_shop4 no i proved the design is a fail
21:11 rue_shop4 it cant get the resolution or speed I wanted out of it
21:11 rue_shop4 the Y axis is damn near as slow as the stepper cnc
21:12 rue_shop4 the 150lpi strips wont give me more than about 20 thou
21:12 rue_shop4 (need room for control error)
21:12 Tom_itx motors not strong enough?
21:12 Tom_itx or pwm too slow?
21:12 rue_shop4 the motors are strong enough
21:12 rue_shop4 on 18tpi rod they are too slow
21:13 rue_shop4 if I used 27:1 gearbox and belt drove them off a 2cm pulley I'd get what I want
21:13 Tom_itx mine are 20tpi so i can relate
21:13 Tom_itx direct drive
21:13 Tom_itx but they're steppers
21:13 rue_shop4 hmm
21:13 Tom_itx you just about gotta gear / belt reduce servos
21:14 Tom_itx did you get some timing belts for it?
21:14 Tom_itx i can't rememmber
21:15 rue_shop4 no
21:15 rue_shop4 I dont know if I want to belt drive it
21:15 Tom_itx alot of guys do that
21:15 rue_shop4 but I was thinking about it
21:15 Tom_itx larger teeth than what i used
21:15 Tom_itx maybe 5mm
21:15 Tom_itx mine are 2 and 3mm
21:15 rue_shop4 I was looking at engine timing belt
21:15 Tom_itx 2 on the encoder and 3 on the motor
21:16 Tom_itx you may as well get what you need
21:16 rue_shop4 the idea was to upgrade my old cnc
21:16 Tom_itx 15mm wide should be ok
21:16 Tom_itx i used 9mm on the spindle
21:16 rue_shop4 and it became a cascade resulting in 'build a new one'
21:17 Tom_itx just draw a line in the dirt and build to that
21:18 rue_shop4 I wonder how large the timing pulley is on a car engine
21:18 Tom_itx they vary
21:18 Tom_itx but you won't get the hole size you need
21:18 Tom_itx then again, i didn't either
21:18 Tom_itx but i knew i could bore them out
21:19 Tom_itx i was rather happy i could reuse the ones from the bot on the encoder
21:19 rue_shop4 lathe :)
21:20 Tom_itx yep, i wouldn't know what to do without mine
21:20 Tom_itx even as old as it is