#robotics Logs

May 22 2014

08:44 SlaveToTheSauce i like that way of drawing a bridge rectifier so much more
08:44 SlaveToTheSauce it's sooo much clearer
08:44 rue_bed http://electronics.stackexchange.com/questions/31833/3v-to-500v-dc-converter
09:35 rue_more SlaveToTheSauce, :)
11:03 wallo does anyone use those cheap 60$ digital oscilloscopes
11:04 wallo i want to get one but they seem unreliable
11:12 GuShH wallo: what do you seriously expect for 60 bucks
11:12 GuShH a lecroy?
11:13 GuShH rohde schwarz?
11:13 GuShH you get what you pay for...
11:13 GuShH buy at least a cheapie rigol.
11:13 GuShH -very least-
11:19 wallo i hear ya
20:04 GuShH god damn...
20:05 GuShH rue_bed: I can't figure out these oscillations http://gushh.net/tmp/dscn5496f.jpg
20:05 GuShH that's 6063-T6 1 inch od tubing
20:06 GuShH near the headstock I get some banding... I'm wondering whether it's caused by the saddle or the bearings
20:06 GuShH you can't really notice it by eye unless you have a strong light source
20:06 GuShH it wasn't held between centers, but I don't see chatter... I doubt it's the material itself
20:07 GuShH finish is smooth, looks polished, but it has banding
20:07 GuShH that was a final 1 thou pass on a coarse-ish feed, nothing special
20:08 GuShH speed is fine, plus it would show issues throughout, not just near the headstock... my centers are not big enough for the inside bore of this thing, I would have to build some type of cap with a center hole..
20:08 MrCurious hahahaha, i thought you were taling to rue_bot... then i thought yeah, we could automate him...
20:08 MrCurious talking
20:08 GuShH MrCurious: no just me and OCD
20:10 GuShH trying to figure out what's wrong
20:10 GuShH I've read about oscillations carried from the AC motor
20:10 GuShH ie resonant frequencies and whatnot
20:11 GuShH Not sure what to believe.
20:38 rue_shop2 neutral harmonics?
23:23 Curious discovers $11 logic analyzers
23:57 rue_more what do you get for $11?