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Robert Robotics
United States
เข้าร่วมเมื่อ 16 ก.ค. 2018
I'm making a battlebot
Introducing Subatomic! This year I'm going to try and captain my own team at Battlebots World Championship VIII, and this video shows you some more info about it. Hope you like it.
มุมมอง: 394
วีดีโอ
![MIT Mini Cheetah Actuator [#2]: Firmware and Configuration](http://i.ytimg.com/vi/2jzKCeKifuY/mqdefault.jpg)
![MIT Mini Cheetah Actuator [#2]: Firmware and Configuration](/img/tr.png)
MIT Mini Cheetah Actuator [#2]: Firmware and Configuration
มุมมอง 9K3 ปีที่แล้ว
I'll post a video detailing the control code a little later on. JST-GH Connectors: amzn.to/3t1GIfu XT30 Connectors: amzn.to/3qqtlnC 51146 Connectors: bit.ly/38lZPsT ST-Link Utility: www.st.com/en/development-tools/stsw-link004.html TTL Converter: www.adafruit.com/product/954 PuTTY: www.putty.org/
I Made a Bot that Catches Fish for Me in Animal Crossing
มุมมอง 9404 ปีที่แล้ว
Description: I made an automatic fish-catcher in Animal Crossing to get up to 100 fish in a row. Link to controller: www.amazon.com/gp/product/B07JWHVHLQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Link to Github: github.com/Robert-Robotics/animalCrossingAutomaticFisher
MIT Mini Cheetah Actuator Teardown
มุมมอง 107K4 ปีที่แล้ว
Here is a teardown video of a Mini Cheetah Actuator from AliExpress. Actuator: www.aliexpress.com/item/32985671853.html?spm=a2g0o.productlist.0.0.1d84249alSOOpc&algo_pvid=466b19b1-11c4-470a-868e-0c3d3f3c48a2&algo_expid=466b19b1-11c4-470a-868e-0c3d3f3c48a2-3&btsid=0ab6fa8115947737931131679e347e&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_ JST-GH Connector: smile.amazon.com/Connector...
15:17 this reminds me when I try to pee in the morning
I have some question about assemble sun gear and ring gear. In normal case, stator sticks to rotor becasue of magnetic, center of stator will misalign from center of rotor. I want to know how do you solve this problem. Thank you.
more animal crossing content pls
Which screwdriver set is that?
please make similar with software.... ive been searching for hours for some cheat or game slowdown as i have a dissability that makes fishing really hard for me with the react times of some of the fish...
360 * 12 actuators for a robot dog is $4320 just for the actuators. pretty crazy how Unitree robotics is selling the Go 2 (similar to the mini Cheetah) for under $2500 for the whole robot
Plastic gears
@@RobertRobotics Where did you hear that Unitree uses plastic gears for their robo-dogs?
Thanks a lot for sharing!
hello robert, please help me out
hello robert, Great video! Could you kindly let me know if this same configuration and firmware technique would work for GIM 8115-9 motors too?
Nice job!
13:28 코일이 감긴 스테이터와 링기어가 고정자, 자석이 달려 있는 썬기어가 회전, 아웃로터 방식의 모터, 선기어가 회전하면서 위성기어를 구동 위성기어 캐리어가 최종 출력단.
Its gear ratio looks very low. It will help back drive while generating much heat.
Thank you for sharing.
Hey, couldn't find the link for the sample code. Can you please guide me to the link for the same! Thanks a ton
What LED's did you use for Alex's car?
thanks!
Hope you guys get accepted, this bot seems great
Very impressive, but you could have also just reset the game each time you failed lol
very cool thanks
what type of wire for the winding and how many loops in each coil?
Do you have the video of controlling with a teensy? Please would like to see it
Excellent 👍👍👍
Super interesting bro😇
Hey Robert, did you do some tests with these actuators? I'm really interested in buying some of those, but I'm extremely skeptical about the electronics and the winding not being good and the actuator getting damaged at relatively low loads. Do you mind to share some your experiences with them or otherwise have an opinion on these?
Does it run continuously? Would make a great hub motor
who is ben? where can io download the binary file? thanks.
Ok, here is Ben. Thanks for your help moderfocas 😒😒 drive.google.com/drive/folders/16Q1ty0vweEwSLUS5kKFIQCJXj0VAnlm3
Why this shit costs 300 without driver its just a planetary gear!?🤨 Nice video👍
The reason for the odd numbered gear teeth is to prevent repetitive wear patterns from developing, honestly something I'm surprised the genuine MIT one didn't have. But the MIT was initially designed for lab/experimentation use I guess, not really true "industrial" purposes where they want it to last for thousands of hours.
Yea i think such a gear ratio is called a hunting ratio
To my understanding, the tooth numbers used in this version don’t solve that problem. The 19 teeth on the sun divide evenly into the 38 teeth on the planets, so repetitive wear patterns will still be generated.
Isnt the tooth wear issue going to remain if the repeated "reciprocating" motion of the rotor always remains in the same 5-30 deg flexion range? (That it, it doesn't continuously spin like a standard motor might).
@@TheCuriousOrbs true
That's cool! Thanks for letting know!
Hope they get cheaper in the future, i need this motor for my hub based rc car, i want get rid of the electronics near the motor by using vesc sensorless position control
Which T motor is it?
Great informative video😊👍 Cheers 🇪🇬🌹🇪🇬
Hello, i wonder why during calculation a gear ratio we ignore the middle gears? They don't play any role in lowering RPM?
Could you add your example code you used with the Teensy to communicate with the motor?
Nice video. However you missed some details, like the pattern of the rotor magnetic field and you could also apply the sheet on the rotor magnetic ring once disassembled. There is no marking/groove on the ring for alignment, so that would be a meaningful detail.
Thanks for doing this dissection of one of the major organs of the Cheetah. Great job Doc. Robert. I am sure it will help many like me.
Great video! Very interesting. I see this actuator is available without the driver. As this is an out runner motor, do you think the motor would run very well on a common brushless ESC from the radio control hobby? I'd like to use 4 of these as track drive motors in a robot I'm planning to build. Thanks!
You can use VESC or ODrive
you can use am32 esc
did you happen to have to tune the current control loop at all? Or were these motors close enough to the stock MiniCheetah actuator motors?
the chinese one is engineered better because the gear teeth are not multiples of each other xD
Dude, I would love to see more videos from you
Firmware link not given..please add
great content! I would love to see more about this actuator
really useful but your other videos are not available
Yours videos feel great and I definitely look forward to learn more from you.
you prolly dont give a shit but does any of you know of a trick to log back into an instagram account? I was dumb forgot the password. I would appreciate any tricks you can offer me!
@Arturo Skylar Instablaster =)
@Emerson Caspian i really appreciate your reply. I found the site thru google and im in the hacking process now. Looks like it's gonna take a while so I will get back to you later when my account password hopefully is recovered.
@Emerson Caspian It did the trick and I finally got access to my account again. I am so happy:D Thanks so much, you saved my ass !
@Arturo Skylar happy to help xD
At 0.5 360 us dollars per unit?
i think the baud speed should be 921600, at least it was working for me.
Hello, How can i control this motor in torque mode ?
I don't see the video on controlling with a Teensy.
Me either
I'm still patently waiting for someone to disassemble the Boston Dynamics Spot.
x2
x3
I tried but immediately stopped. (they are too complex) I better not touch it.
nice video! I am amazed that there is enough of a market to support the Chinese knockoffs of these motors, it's amazing how production over there works
Of course china will mass produce expensive things like this
hey robert, what is the measurement of the each teeth, inside, outside diameters?