#robotics Logs

Sep 18 2020

05:32 AM Phrkd is now known as Phreaked
05:57 AM Phrkd is now known as Phreaked
06:50 AM Steffann is now known as Steffanx
06:17 PM * RifRaf checks for a pulse
06:38 PM ace4016: *thump thump*
06:48 PM RifRaf: phew, thought we had lost him
07:26 PM ace4016: :P
08:23 PM Jak_o_Shadows: Maybe I should swap from serial through to a custom USB endpoint
08:23 PM Jak_o_Shadows: Just to avoid having to specify which damn COM port it is
08:31 PM Jak_o_Shadows: Hmm, ok, About +- 30 degrees in yaw
09:03 PM Jak_o_Shadows: and +- 25 deg in pitch/roll if done independently
09:12 PM Jak_o_Shadows: I THINK i'm reasonably happy with it, as a gut
09:12 PM Jak_o_Shadows: the software is ok enough
09:12 PM Jak_o_Shadows: the hardware design is ok
10:00 PM Jak_o_Shadows: Hmm.
10:03 PM Jak_o_Shadows: I don't want to mess round with figuring out brushless motors
10:17 PM Tom_L: how come?
10:19 PM Tom_L: https://www.arduinolibraries.info/libraries/brushless-servo
10:23 PM Tom_L: https://howtomechatronics.com/tutorials/arduino/arduino-brushless-motor-control-tutorial-esc-bldc/
10:41 PM Jak_o_Shadows: More the gearbox side of things
10:41 PM Jak_o_Shadows: I want like robot legs - or quadrapod legs
10:58 PM Tom_L: ask rue about the belt style harmonic drive i posted for him some time back
10:59 PM Tom_L: looked simple and actually doable
11:13 PM RifRaf: Jak_o_Shadows what you working on that pitches and yaws?
11:14 PM Jak_o_Shadows: Stewart Platform
11:14 PM Jak_o_Shadows: To be used as the chest/gut of a quadrapod
11:15 PM RifRaf: very cool, was hoping it was some kind of creature
11:20 PM Jak_o_Shadows: In (long) progress
11:21 PM RifRaf: ah yes, i know about long projects, but waiting 15 years has given technology time to catch up in my case
11:21 PM Jak_o_Shadows: Yeah
11:21 PM Jak_o_Shadows: I'm kinda hoping the same for the legs
11:21 PM Jak_o_Shadows: Hobby Servos just don't quite cut it
11:21 PM Jak_o_Shadows: I think I want legs kinda like this on it: https://github.com/DarrenLevine/TipTap
11:22 PM RifRaf: i am working on some actuators now
11:23 PM Jak_o_Shadows: Cool
11:23 PM Jak_o_Shadows: What sort, and waht for?
11:23 PM RifRaf: ok looks similar, you using planetary gears and brushless motors?
11:24 PM RifRaf: cycloidal gearboxes with brushless
11:24 PM Jak_o_Shadows: For the stewart platform, I am using hobby servos
11:24 PM Jak_o_Shadows: For the legs, I haven't started designing them even
11:25 PM RifRaf: and going to try make the cheetah style drivers with encoder, waiting for pcbs
11:26 PM RifRaf: the soldering is a bit scary cause eyes suck now, but will toaster oven them hopefully
11:27 PM RifRaf: like you am going to try a quadrapod to test things before i make foxys legs
11:29 PM Jak_o_Shadows: Yeah
11:29 PM Jak_o_Shadows: My goal is a quadrapod that actually looks fluid and cn move fast
11:29 PM Jak_o_Shadows: But i'll start with one that can move
11:31 PM RifRaf: i guess you know opendog v2? its coming along nicely now
11:32 PM Jak_o_Shadows: Yeah. I don't mind the legs
11:33 PM Jak_o_Shadows: Not a big fan of the hips
11:33 PM RifRaf: in the recent update it is moving very well, yep good legs, but i would rather not use belts
11:33 PM Jak_o_Shadows: and the whole chest region.
11:34 PM RifRaf: is ok if you like bulldog style, am sure it can be made much better with aluminium parts
11:35 PM Jak_o_Shadows: I don't hate belts for the knee joint
11:35 PM Jak_o_Shadows: I'd rather something with a bit more elasticitity though
11:35 PM RifRaf: yep good for getting the power down and less mass
11:36 PM Jak_o_Shadows: Yeah.
11:41 PM RifRaf: tiptap looks promising, hadn't come across it
11:46 PM Jak_o_Shadows: It's pretty neat