I found Best Robot Actuator (GYEMS: RMD x8)
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- เผยแพร่เมื่อ 1 มิ.ย. 2024
- I found really cool Quasi Direct Drive (QDD) Robotic Actuators. They have a normal position control and also a torque control. Here I tested them and they show the torque more than 30Nm. I was really impressed by the CAN protocol, it is well developed. If you need MIT Mini Cheetah like actuator, I really advise these ones.
Links:
www.aliexpress.com/item/10000...
www.aliexpress.com/item/10000...
Special thanks to my special Patrons: Wesley Corp and RobotDigg Shanghai!
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#Robotics #Robot #Actuator - วิทยาศาสตร์และเทคโนโลยี
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the Best way to support your channel is to make companies with you !!!
@Simon Julius ...what does that have to do with this video? it's not relevant to this channel, or the technology being tested in this video.
Здравствуйте! У меня почему то на прямую через их драйвер не конектется, пишет
I want to tell you how much I enjoy watching all your videos. I am only casually interested in robotics; I have no real applications that I could use for myself. But I very much like watching your videos because you show the entire process of evaluating motors and mechanisms. I have been a CNC and 3D printing enthusiast for over 25 years now, and robotics may become affordable enough in the future that I might begin to dream up uses that I can’t envision today. But in the meantime I find great joy in watching all of your projects and experiments. You are one of my favorite channels, and I hope you continue with your videos because they are so informative and entertaining. I love how TH-cam brings the world together.
I am amazed! I though something like this would be far more difficult. Thank you for opening my eyes to new possibilities.
Thank you so much for sharing these! I've been looking for something like this for a very long time for the purpose of building a very advanced camera slider!
This channel is heaven! thank you so much for your testing. THIS IS GREAT!
It has been super strange to see something I designed copied by so many Chinese vendors, and then reviewed by people on the internet.
You might as well release the CAD now so at least the clones are of better quality ; )
Miss your periodic videos. Hope Life is good at Boston D.
Could you give me a link so i can buy from you?
Nice work tends to end up in some fun places.
Ben Katz if this is a great product, why not? :)
As usual, awesome content! Thank you for sharing.
Dude, it's so great that world have such a wonderful videomaker. I'm appreciate that your content is full of practical use and a little bit of humor.
I really appreciate these videos, I wish you great success.
There is something reassuring about your way of explaining and demonstrating your ideas and progress that I really like. Your could be a good politician.
Just subscribed. Thanks for the great information and resources!
You're a cool dude, genuinely. I dig it. Definite like and subscribe. Keep going.
Thank`s you to share your work with the best attitude!!!
Thanks for the nice video and consistent test method.
Professional content and very clear and light way to explain
Thank you for making these videos.
Good to find someone who knows so much. Liked and subscribed.
Very well done presentation! I came because of James Bruton youtube channel and he loves your channel also! I had to become a subscriber, because of your honesty! Thank you very much!!!
your video is really helpful for me (i'm a programmer in s.korea). thank you so much.
Thanks for the good review , very useful
These are awesome! Great video
Thx for your videos!
Great videos thank you so much, this helped me so much.
Thank you for sharing! Very good info.
Thank you for your comment!
Hi, it's a really nice actuator, thank's for share :D
very good lesson. It is easy to undestand. Thank you
Watching it jump in his hand when he changes direction is both scary and beautiful. Like watching that guy with the bear sanctuary play with his bears.
10:06 ...nice socks. lol
Great job on the video, it is very informative. I always wondered how these devices worked. I have been very interested in this technology, since seeing the HAL (Hybrid Assisted Limbs) exoskeleton in a video, that was developed by Cyberdyne in Japan.
Thanks for sharing your knowledge. --- Alfredo @ Tyler, TX, USA
Thanks!
Very interesting and useful.
Thank you for sharing！Very useful
Thanks a lot, very interesting!
thank you for such video
Excellent video
Great content, I find your videos very informative, however could you look at the feasibility of using clearpath servo motors for robotic arm projects?
Good video and explanation, you rock's, thx!
Thank you a lot!
@@Skyentific Than's for share your work with the best attitude!!!
good information, thank you
great job!!! thanks!!!!
Excellent video and really both products are just beautifull !! Unfortunately a little expensive for me as a hobbyist...
great video!!!!... can you please explain a little bit about what is torque control mode and how you used it in this actuator.
So beautiful motors 😍
"It's almost like on those fancy TH-cam channels", heheh this is a fancy TH-cam channel! working on frickin' robot arms
Thanks!
at those prices for each of those it better be.
Thanks for bringing attention to these actuators. I bought one for a project. Do you have a video that details how to use the CAN bus?
This is so helpful for my 6 axis 3d printer
Очень познавательное видео, большое спасибо)
Большое спасибо за добрый комментарий!
Hi, this is a really nice video. Thanks for uploading. I wonder if you have tested the peak current it takes to reach the 31+ Nm? Thanks again!
Nice video !
Thank you!
Well done.
Hi first of all very interesting videos keep the great work, secondly which D printer do you use for making your parts? thank you very much
Hey, great review! Do you still have the documentation of this motor by any chance? It would be really useful. Thanks
Nice video and actuator. Is it possible to review some cobot (collaborative robot) joint actuators like Universal Robots, Han's robotics?
A very interesting option is a motor wheel from a gyro scooter. 600rpm and 350W nominal. very large Nm and no backlash. the price for a motor is only $ 30-40. I controlled using a VESC controller. very well you can configure the necessary PID.
I will assume that the difference in Nm is ~ 1.5. in favor of gear with play :-(
but just by increasing the voltage you can easily raise the current -> Nm. I turned the 36V motor from 60V. without heating I could not give a continuous load.
but the most important thing is WITHOUT BACK LASH!
Great video! It inspired me to buy the RMD-X8. Would it be possible for you to publish the code you wrote to test the actuator?
nice video really like it,,, is it necessarily to use termination resistor ??!! and why??
Very cool! are there numbers available for inertia and friction? also I wonder how higher rpm operation is
Good video! Thank you :) What is the nominal speed of the motors?
Great review. I would like to know if this motor has an internal brake that can prevent it from turning when there is no power to the motor. Just like in an industrial robot where the robot arm segments stay in place when the robot is turned off.
Very interesting! they are not the cheapest thing on this earth but they seems good, maybe for the 7Axis new robot
!
To build robotic arms, you need lightweight motors with high torque. If you compare continuous torque to motor weight ratio, Dynamixel H54 is the best.
Thank you for this video. It helps me a lot.
Please could you explain how information from the motor can be read on the Mac. Which program is needed for that?
It is shown on the video at 7 min 28 sec.
Great review! Could I ask you if you have any idea about the backdrive reistance? With this I means what effort (Nm) is needed to manually drive the output shaft when the actuator is turned off. In my project it is very important that the device can be manually overrriden without adding too much resistance. Thank you in advance!
Great channel...
Love your explaination and your details... i would lo e to build 7 dof to hold a industral router. Question have you ever looked at clear path servo motors?
Thank you. Theoretically, if you would like to make serial robot, clearpath servos are a little bit heavy for its torque. You would need to use a large reduction gearbox. Personally, I never used these servos.
@@Skyentific i was thinking of using a 5kw atc spindleon the end of the arm.... aprox 20kg....which means redesigning your fram i would..love to 3d print a mold of it..would require redesigned heavy duty supports and thicker bracing support and cast the peices from carbon fiber shell filled mineral cast expoxy....yes...much heavy industrial robotic arm..using clearpath servo and..harmonic gears...
Where can find a free 3d cad model of this or simular 7 dom arm
Thanks for sharing. Is it typical to include another gear with these actuators? Any harm in doing so?
Wow, for a robotic student seeing these actuators is sooo pleasing to the eyes.
If possible plz do make a video of some of the options for the feedback systems that we can use in case of using a normal DC motor with gearbox (not a stepper motor) for the actuators.
This is my project actually sothat we can use the DC motor of our choice.
So basically, making these nice cheap multipole actuators completely worthless by switching back to a design with no holding torque, phase backlash, big EMF capacitors, and terrible positional control.
Здравствуйте. Подскажите пожалуйста сопротивление у обмоток этих моторов. Нужно попробовать их использовать с другими CAN контроллерами. Спасибо. Надеюсь найдете время померить. Хорошего дня!
I have no need for one of these but I really want one now lol
Awesome
Пора открывать производство таких приводов! В будущем робот без таких будет считаться стим панком! Танец в конце- топ!
Спасибо. Я думаю что скоро такие актуаторы начнут дешеветь.
@@Skyentific по ходу сам начну делать
@@Skyentific если покажешь нутрянку
In minute 4:37 you mention that you implemented two termination resistor on the cable that goes from the CanBus shield to the RMD X8 Motor.
Please can specify which termination resistors you used and in which sequence?
This is the servo that I mentioned to you on your previous video but you haven't replied to my question. Anyway, yeah the good thing is it can read position in multi-turn. But when ever you turn off the power and power again, the servo will lost its absolute position, so you may need to calibrate every time you reboot the servo to get the absolute output shaft position. It's just a small issue, just point out to you :) anyway nice video again!
Do you have any idea what library he's using? I can find an "mcp_can" library by searching on github, but none of the ones I found were compatible with his code.
I have the steadyWin actuator, i suppose you have to calibrate motor before it will move at all :-).
The red light comes up , but no movement
Hi, thank you for sharing this video. I just bought one. Could you also share your Ardunio code you used for your demo? Thanks
"Great video! I'm curious about the actuator's flexibility. Can you also adjust the stiffness and drag values on this actuator, similar to what's possible with the Mini Cheetah clone actuator?"
Welcome. I have a question about the universal robot arm, how is the mechanism of moving the arm by hand and then storing the movement, explain this please
I would love to make a 2 axis gimbal platform for a telescope/camera out of something like this for tracking terrestrial things like rocket launches and races. Do they provide any kind of measure of mechanical vibration in the drive? What is your subjective experience based on tinkering with them?
Any idea on whether MyActuator is still supporting these motors? They seem to have gone offline and aren't responding to support messages. Using this exact same setup and code, can't get any communication with the motors, even with the debug software.
Nice
I m thinking of using those strong and cheap compaired to this , e-skateboards brushless motors along with odrive or FSESC that cost one fourth of this actuator for a robotic arm
Hi! we are experiencing difficulties trying to find a good way to home the actuator, it comes with an absolute encoder, but unfortunately it is not mounted on the output shaft, but on the motor shaft, so we can detect home in the 0-360 range of the motor shaft, however, we dont know on which of the 6 positions of the gearbox output it is on... not without adding an extra encoder, limit or home switch and a routine. Are there any similar motors out there that do have an output shaft encoder, or how do you recommend we go around this?
Thanks!
I dont know if you have it or not, but you should make a page with projects etc...and a Discord channel.
Good luck!
Great...
66.7% Positive feedback
for an aliexpress store only open since Oct 2019 seems kinda poor?
I am wondering how shock resistant the gear train is. For legged applications, you might overload the gears momentarily.
So if you can control the speed of the actuator you could probably slow it down before it stopped to reduce backlash.
Hello.
Can you please described me the torque mode?
Do i understand correctly, that if i want to rotate a motor with constant speed, and constant torque, than my input via can is only :"direction, speed, desired torque"? Or desired torque is set only via config limiting current? Can i during motor operation change all these parameters?
Thank you very much
Does the No driver model come with a encoder still? I’d like to use odrive. Wasn’t sure if these have a driver board with a integrated encoder on a outboard shaft or some thing similar
The links are down, just wanted you to notify :)
Hi, Could you explain how to adjust PID values with that? For reference, I have a plan to develop SCARA arm (H: 68cm, L1: 30cm, L2:30cm) using use RMD X8 Pro.
Вы используете алюминиевые профили которые сильно гнутся - это тоже снижает усилие- torque
Я предсказывал что Вы перейдёте на покупные актуаторы ещё пол года назад)
Hi! Where can I find the motor control protocol documentation that is used in this video?
Ваш английский становится лучше радует, спасибо за видео)))
Спасибо! Приятно слышать, а то все только и критикуют мой английский! :)
wow, unboxing...
Skyentific what will be if you increase torque it will corrupt actuator? for example if i want use actuator for milling wood plate i should use some reduction gear ?
Very good find, will you use this actuator for your humanoid robotic arm?
I will use it for my second humanoid robot arm. But the first one will use ODrivers and Multistar motors.
they look like great actuators. it would be great if there were cheaper alternatives
Do you wish that these motors had a higher gear reduction? 1000 RPM seems high for a robot arm application
If you pay over $500 for an actuator, you should also look at the Robotis Dynamixel XM and Pro series.
WOW! Can I ask that where can I find this manual?
Would a breakthrough in actuators accelerate the widespread use of robots?
How did you calculate the backlash of the arm? I can't seem to find it online
may I know how to diy the CAN connect cable like you do?