#garfield Logs

Apr 04 2022

04:53 AM Tom_L: morning
08:39 AM rue_mohr: mmm
09:05 AM rue_mohr: 2386
09:06 AM rue_mohr: huh, I still cant tell
02:17 PM Tom_L: <rue_mohr> 2381
06:01 PM rue_mohr: up a bit then
07:15 PM Tom_L: wow i was out cold for a bit
07:22 PM aandrew: rue_mohr: is there anything inherently wrong with taking a regular old, run of the mill op amp in a non-inverting configuration with a zero ohm feedback resistor?
07:23 PM aandrew: eg +ve input to signal via 47k, -ve input to ground via 47k, 0R between output and -ve?
07:23 PM aandrew: I don't need gain, just buffering
07:24 PM aandrew: usually I just have + to signal, - to fb shorted
07:40 PM aandrew: stupid question, please disregard
07:57 PM rue_mohr: it could be, depending on te op=amp
08:00 PM * Tom_L goes to hunt down a hunk or steel
09:56 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/MODS/fixture/A9_Fixture1.jpg
09:57 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/MODS/fixture/A9_Fixture2.jpg
09:57 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/MODS/fixture/A9_Fixture3.jpg
09:57 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/MODS/fixture/A9_Fixture4.jpg
09:57 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/rue/Can_Holder/A9_New/MODS/fixture/A9_Fixture5.jpg
09:58 PM Tom_L: i gotta redo the holes though
09:58 PM Tom_L: i didn't have the cnc zero'd in Y and they're not centered
09:58 PM Tom_L: tomorrow...
11:07 PM rue_bed2: oh wow
11:08 PM rue_bed2: you didn't buy it specifically I hope..
11:09 PM Tom_L: no it was cutoff from another project
11:09 PM rue_bed2: wow
11:09 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Skate_truck/Skate_truck3.jpg
11:10 PM rue_bed2: may be its cause I just slept, I cant tell if its steel or alum
11:10 PM Tom_L: that was with the old sherline motor
11:10 PM Tom_L: alum
11:10 PM Tom_L: i don't have much steel around
11:10 PM rue_bed2: ok
11:10 PM rue_bed2: rail spacer?
11:10 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/cnc/Skate_truck/Setup1.jpg
11:11 PM Tom_L: rollerskate truck
11:11 PM rue_bed2: or skates
11:11 PM rue_bed2: oh
11:11 PM rue_bed2: k
11:11 PM Tom_L: did 4 i think
11:11 PM rue_bed2: I kinda remember
11:12 PM Tom_L: i'll move it down and redrill it tomorrow maybe
11:12 PM Tom_L: i had to ream the holes on the drillpress since the reamer was too long
11:13 PM rue_bed2: my pins were a hair large I had to tweak them with a file
11:13 PM Tom_L: i did too
11:13 PM Tom_L: that was just 1/4" bar
11:14 PM Tom_L: not dowel pins
11:14 PM rue_bed2: you might be able to just shape a pin to fit in eh? I couldn't do the milling
11:14 PM Tom_L: or just machine the slot positive so it sits in a slot
11:14 PM rue_bed2: yea
11:14 PM Tom_L: no pins
11:14 PM rue_bed2: thats what I mean
11:14 PM Tom_L: i was just messin tonight
11:14 PM rue_bed2: it wasn't an option for me
11:14 PM Tom_L: maybe half an hour or so
11:15 PM Tom_L: i may make a larger U part to see if it will bend them
11:15 PM rue_bed2: gonna try to go back to sleep, wake up at 1
11:15 PM Tom_L: i'm headin to bed too
11:15 PM rue_bed2: I just woke up
11:15 PM rue_bed2: cats
11:15 PM Tom_L: i'll be up at 4:30 my time
11:15 PM Tom_L: 2:30?
11:16 PM rue_bed2: heh
11:16 PM Tom_L: yours
11:16 PM Tom_L: i wasn't planning to do anything tonight but got bored
11:17 PM Tom_L: the part is a little loose sideways with those pins
11:17 PM Tom_L: they're 1/4" and the slot is a tiny bit wider than that
11:18 PM Tom_L: not enough to matter i don't think