#garfield Logs

Jan 08 2023

01:36 AM rue_mohr: I think, what I want is to build a 'breaking table'
01:47 AM rue_mohr: a table of velocity indexes, and the distance that it takes, in full reverse to stop from that speed
01:47 AM rue_mohr: I wonder if its lienar
01:47 AM rue_mohr: I dont think so
02:33 AM rue_mohr: https://twitter.com/ntv_rd/status/1611888120571756545
02:34 AM rue_mohr: https://www.youtube.com/watch?time_continue=27&v=fpTvZlnrsP0&feature=emb_logo
03:30 AM rue_mohr: aaah
03:30 AM rue_mohr: series vs parallel PID thats what it was
08:31 AM aandrew: rue_mohr: heh reminds me of when we were developing the enhanced DC injection braking for our soft starters
08:32 AM aandrew: 125HP motor on the floor, we could take it from 1800rpm to 0 so fast it would tip the motor over on its side
08:35 AM aandrew: we had an install where a software bug snapped the shaft off a motor connected to a... ball mill I think it was? that was *not* a happy customer
08:35 AM aandrew: I think that one was 250hp, I wasn't on that one
03:10 PM rue_mohr: huh
03:10 PM rue_mohr: ya know, its similar
03:10 PM rue_mohr: I'm just adding a factor where it stops at a particular position
04:58 PM polprog: rue_mohr: its rclib, i wrote it ages ago
04:58 PM polprog: based on your program
04:59 PM polprog: https://gitlab.com/coniferous/rclp
05:04 PM polprog: i should add inductance calculations there
05:33 PM rue_mohr: :]
05:33 PM rue_mohr: huh, gitlab also wont work in my browser
06:08 PM rue_mohr: arg, there is nobody to talk to on this planet...
06:08 PM rue_mohr: there is me
06:09 PM rue_mohr: I know, but its not the same
06:09 PM rue_mohr: well, I'm still here
06:09 PM rue_mohr: hey, what about these mcp6001 you found, want to play?
06:10 PM rue_mohr: didn't we buy some mcp6002 as well?
06:10 PM rue_mohr: we did, I'm not sure if we have them
06:10 PM rue_mohr: hey, there is a parcel in the box
06:10 PM rue_mohr: lets go see!
06:10 PM rue_mohr: +- pouring rain..
06:11 PM Tom_L: now there is we
06:11 PM Tom_L: wanna work out spindle orient?
06:12 PM Tom_L: gonna review that now that i have a decent motor
06:33 PM rue_shop3: how many lines on the encoder?
06:40 PM Tom_L: 500
06:41 PM Tom_L: + index
06:41 PM Tom_L: the code is mostly there, just needs polishing for the new motor
06:43 PM rue_shop3: PID ADJUSTMENTS?
06:44 PM Tom_L: i'm not sure
06:44 PM Tom_L: i had 2 pid loops on the sherline but i think i only need the working one on the new spindle
06:45 PM rue_shop3: what happens if you try to do positioning now?
06:46 PM Tom_L: i don't know yet
06:46 PM Tom_L: right now i'm still rounding up code
06:47 PM rue_shop3: do you have to rewrite the fpga?
06:47 PM Tom_L: no
07:13 PM Tom_L: ok of the comparison operators EQ,NE,GT,GE,LT,LE what are LT and LE?
07:14 PM rue_shop3: LESS THAN LESS THAN OR EQUAL
07:14 PM Tom_L: equal, notequal, greaterthan, greater or equal, LT LE?
07:14 PM Tom_L: ahh
07:14 PM Tom_L: duh