#robotics Logs

Jul 23 2015

05:20 veverak xy part from internetz for 3d printing that got not enough thickness on places where it should have
05:20 veverak :/
05:23 veverak ok, it's my fail to use it and don't check it, I suppose
05:35 deshipu it's always your fail ;)
05:41 veverak yeah
05:43 deshipu the crazyflie 2.0 I won just arrived and it's soo bad
05:58 veverak why?
06:02 deshipu huge lag
06:02 deshipu over BLE at least
07:06 veverak http://i.imgur.com/9sCB1KA.jpg
07:06 veverak well
07:06 veverak this will hold until replacement is printed I suppose
07:07 Jak_o_Shadows1 My hot-end resistor failed today
07:07 veverak Jak_o_Shadows1: switched to thermocouple
07:08 Jak_o_Shadows1 also, instead of a tonne of threaded rod & nuts, I just have a piece of wood with 2 holes in it for the y-3nds
07:08 veverak iiiit got it's issues of it's own
07:08 veverak but at least the sensors itself is idiot-proof
07:08 veverak :)
07:08 Jak_o_Shadows1 Nah, it didn't overheat and fail I don't think
07:08 Jak_o_Shadows1 I mean, ok, high temp did't help, but it wasn't at a high temp when it failed
07:09 veverak http://www.thingiverse.com/thing:132739/#remixes
07:09 veverak I liked this idea a lot
07:10 veverak buuuut idler side is weak
07:10 veverak but I suppose that if I replace the idler with solution similar to this it will be OK http://www.thingiverse.com/thing:230842/#files
07:11 Jak_o_Shadows1 I've spring-loaded my idler
07:12 Jak_o_Shadows1 Wish my x was spring loaded as well
07:13 Jak_o_Shadows1 (Possibly because one of my z-rods is not perfectly straight. It's a little hard to tell)
07:18 veverak Jak_o_Shadows1: http://www.thingiverse.com/thing:160636
07:18 veverak while I didn't spotted my Z rods bended
07:19 veverak I still prefer this upgrade to the X axis
07:19 veverak http://www.thingiverse.com/thing:372056 I use thix axis actually
07:20 Jak_o_Shadows1 That first one is clever in some respets, but It's sorta just patching around the issue isn't it. But it is simple
07:20 Jak_o_Shadows1 Honestly, if I were redoing my x-axis, I would make the rods horizontal
07:21 veverak it's not perfect but it sounds more "sane"
07:21 veverak :D
07:21 Jak_o_Shadows1 Why can the x-axis rods poke through the back of the idler side one anyway?
07:22 veverak well, poke is maybe not perfect
07:22 Jak_o_Shadows1 pass-through
07:22 veverak perfect would be to have just holes for screws that holds idler
07:23 veverak but I still think about this as better solution than normal idler
07:24 Jak_o_Shadows1 It's a shame that I was so close to getting really good prints out
07:24 Jak_o_Shadows1 I mean, I'm pretty sure that one of my z-couplers makes it off-centre
07:25 veverak http://www.thingiverse.com/thing:141479
07:25 veverak Jak_o_Shadows1: ^^ made my days much happier
07:26 Jak_o_Shadows1 You've noticed no loss in accuracy in z-movement?
07:27 Jak_o_Shadows1 I suppose teh initial homing motion would deal with it, because you only ever turn in one direction while you're printing
07:28 Jak_o_Shadows1 Because yeah, that print seems like a realllly good idea
07:29 veverak Jak_o_Shadows1: well
07:30 veverak because of this I found out that my i3 frame was not tightend properly to y-axis and was actually tilted to one side
07:31 Jak_o_Shadows1 I'll probably find an error like that too.
07:31 veverak http://i.imgur.com/BJ7M19t.jpg
07:31 Jak_o_Shadows1 But that part also solves another problem I have: I installed my x-axis upside down (which flips the stepper motor around) because I was concerned about clearance between the motor and the frame
07:31 veverak aaaand thing is
07:32 Jak_o_Shadows1 So I'e had to do aweful cludges to get the z-axis nuts to stay in
07:32 veverak that this also prevents your printer smashing your print head into the heated bed
07:32 veverak :)
07:32 Jak_o_Shadows1 hey, it does too. That's handy.
07:32 veverak it allows you to get x axis to max position really quickly
07:33 veverak I usually lift it with hand and put something under it to block it from failing
07:33 veverak Jak_o_Shadows1: and it does improve your prints
07:33 veverak it removes any negative side effects that your threaded rods could have on the print
07:34 veverak and I didn't noticed any problems with z resolution
07:34 veverak only problem you could get is that whan you go up too fast it can jump, but nah, nobody goes that fast I suppose :D
07:34 Jak_o_Shadows1 Ok! first non-calibration print after I fix teh hot-end
07:34 veverak Jak_o_Shadows1: also it uses two nuts and spring between them
07:35 veverak to reduce baclash on z axis
07:35 veverak which is something most of X ends doesn't have
07:35 Jak_o_Shadows1 Good thing I bought extra M5 nuts
07:35 veverak Jak_o_Shadows1: + I know second guy in local hackerspace who uses it a lot and loves it
07:35 veverak for year or more
07:35 veverak yeah
07:36 veverak just ... you can except that wou will have to play a bit with it to make everyhthing proper
07:36 veverak also you need to more or less damage your x ends so they don't get in a way of thins thing
07:36 veverak or at least I had to because my nut was glued in the x ends
07:37 Jak_o_Shadows1 hahah. I assuredly don't have that problem.
07:39 Jak_o_Shadows1 It slightly messes with my z-endstop though, which is mounted to the x-axis
07:40 veverak well, unfortunetly :D
07:41 verak uses optoendstop on Z
08:06 LiohAu still no ROS user here? :(
08:07 Jak_o_Shadows1 I installed it once :P
08:29 deshipu I want to start using it at some point
08:29 deshipu but so much other things to do
08:31 veverak yeah
08:31 veverak :)
08:34 deshipu I made fourth version of the PCB for Tote
08:35 deshipu lots of small improvements
08:37 veverak :)
08:37 veverak nah
08:37 verak just remembered that his server is getting close to be 5 years
08:38 veverak *homeserver
08:38 veverak would be nice to decide what to do when it starts to fail
08:38 Jak_o_Shadows1 haha. I have a core 2 duo with 2gb ram
08:38 veverak sandy bridge with 8 gb ram
08:39 veverak it's just that
08:39 veverak if I will again homebuild server case and setup from normal components
08:40 veverak (but I want to have simple cluster this time)
08:40 veverak OR
08:40 veverak I will get something proper
08:40 veverak maybe get virtual in our hackerspace
08:56 deshipu I use a cubietruck for home server
08:57 deshipu a bit of a waste, a pi model A+ would work as well
08:58 Jak_o_Shadows1 I can't imagine running a server on a Pi, or anything but x86. It's a hassle enough getting required packages for centOS 6
09:08 rue_house I wonder what these 12 blackberries run
09:10 deshipu packages?
09:13 rue_house no processor wise
15:37 mumptai this channel got pretty silent in the later years
15:40 deshipu it's just resting
15:40 deshipu lovely plumage, though
15:47 verak is medita
15:48 veverak how I will mak my fillament holder finally perfecT?
16:01 SpeedEvil veverak: more struts
16:01 veverak struts
16:01 veverak ?
16:02 SpeedEvil nvm - ksp joke
16:02 veverak I see
20:29 anonnumberanon mumptai, robotics is dead
20:30 anonnumberanon no more robots
20:30 anonnumberanon EVER
22:11 rue_shop3 ok, tryng out a new driver for the high side P channel for my bench supply
22:11 rue_shop3 *excited*
22:15 rue_shop3 what good is a digital scope, if instead of having to wait for a CRT to warm up, you have to wait for it to boot?
22:16 Jak_o_Shadows Saving to a computer?
22:51 rue_shop3 it was just a thought
23:21 rue_shop3 making a 250Khz fet driver is interesting
23:21 rue_shop3 http://ruemohr.org/~ircjunk/circuits/fetdrive.gif
23:21 rue_shop3 hmmm
23:22 orlock eurgh
23:22 rue_shop3 I'm not using that circuit right now
23:22 orlock rue_shop3: Did you ever get that first of the six months apart images?
23:22 orlock I took it, just cant remember if you got it
23:22 rue_shop3 no...
23:22 rue_shop3 hah
23:22 orlock ok
23:22 orlock anothe r4 months or so to go for the second one anyway
23:23 orlock rue_shop3: current bug i need to fix is microseconds warparounds
23:23 rue_shop3 the circuit I'm using has about .5us rise time on 12V
23:59 rue_shop3 orlock, you wrote all the code your using now didn't you?