Ideal for the Super Fast Robot (T-motor)

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  • Опубліковано 21 лип 2024
  • T-motor company was kind enough to send me two robot actuators with MIT mini Cheetah controllers. And It was a pleasure to test them. Thanks to the fast controller you can do the collision detection and bilateral telepresence.
    Here the link to this actuator:
    Sales Engineer: Yoyo Liu
    E-mail: yoyo@tmotor.com
    Skype: Yoyo28rctiger
    WhatsApp: +86 15797704489
    Product Link: store-en.tmotor.com/goods.php...
    Special thanks to my special Patrons: Wesley Corp, RobotDigg Shanghai, Pierre Freyssinet, M. Aali and Shounak Bhattacharya!
    Please subscribe. This will help me to develop other projects like this, to bring the bright future closer!
    One time donation:
    www.paypal.me/Skyentific
    If you want to help this channel, please support me on Patreon:
    / skyentific
    Instagram: / skyentificinsta
    Facebook: / skyentificface
    Twitter: / skyentifictweet
    #Actuator #Brushless #Robotics
  • Наука та технологія

КОМЕНТАРІ • 258

  • @steveanimatrix3887
    @steveanimatrix3887 4 роки тому +2

    Pretty exciting. T-Motor has a very good reputation in the drone industry. Both my drones have T-Motors installed.

  • @sanches2
    @sanches2 4 роки тому +7

    Друг, i love the way you present. Every time i watch a video of yours i have good laughs guaranteed and perfectly presented interesting actuators. Directly stolen from ...'s thesis made me roll on the floor laughing:) Best wishes from Bulgaria!

  • @Mushaz
    @Mushaz 4 роки тому +3

    Love watching all your videos! This one was very interesting, thank you for sharing and keep making these videos.

  • @immortalsofar7977
    @immortalsofar7977 3 роки тому

    That telepresence demo was freaken cool!

  • @dunichtich100
    @dunichtich100 4 роки тому +2

    As always a verry nice video and presentation of the motors! 😊👍👍👍

  • @mosesturner4018
    @mosesturner4018 4 роки тому +7

    Lovin that Eee PC!

    • @Skyentific
      @Skyentific  4 роки тому +6

      And it needs less than 10 minutes to boot!

  • @mattanimation
    @mattanimation 4 роки тому +3

    another great video, yes those actuators did look pretty sexy coming out of the box.

  • @zahidullah3413
    @zahidullah3413 2 роки тому

    As always a verry nice video and presentation of the motors !!!

  • @4ikapikadesi
    @4ikapikadesi 4 роки тому +4

    Очень классный канал. Третий день под впечатлением. Спасибо!

    • @Skyentific
      @Skyentific  4 роки тому +2

      Спасибо большое что смотрите!

  • @Guanaalex
    @Guanaalex 4 роки тому +2

    Thank you so much, for this very helpful educational video. You are an excellent teacher. Super!

  • @MikeNugget
    @MikeNugget 4 роки тому

    Amazing review!

  • @jesusdemiguelfernandez8647
    @jesusdemiguelfernandez8647 3 роки тому +2

    Hi @Skyentific! Really nice video! Could you share the values for the proportional and derivartive gains? At the beginning the values were Kp = 100 and Kd = 0.1?

  • @herobone9385
    @herobone9385 4 роки тому +1

    You could try using the STM32 you used for your DIY Mini Cheetah Controller as the brain. Most of the STM32 boards are programmable in the Arduino language and some even support CAN built in or have support for normal Arduino shields. And of course they are much faster than an Arduino.

  • @TomTom-tp3qc
    @TomTom-tp3qc 4 роки тому +1

    Perfect motor for a DIY scara robot arm!! Imagine the 3D printer you could make with that.

  • @dreggory82
    @dreggory82 4 роки тому +1

    Awesome!

  • @natec1
    @natec1 3 роки тому

    Those look very fun to play around with and try things

  • @normcaissie5598
    @normcaissie5598 4 роки тому +1

    Awesome videos. Thanks

  • @nabajyotidey5613
    @nabajyotidey5613 3 роки тому

    You are an awesome inventor... Love you from India.

  • @JPA55MOR3
    @JPA55MOR3 3 роки тому +13

    Just bought one. Will update soon

    • @BoltzVideo
      @BoltzVideo 3 роки тому

      Hi, did you manage to get it running with Arduino (or similar) controller?

    • @akimrain
      @akimrain Рік тому

      @@BoltzVideo HI what about you? How did you run it?

  • @larstronruddahl4199
    @larstronruddahl4199 4 роки тому

    Great videos! How do you rate this motor compared to the Gyems RMD X-8 you reviewed earlier. Any differences in build quality, backlash etc? Are they controlled the same way?

  • @Vancha112
    @Vancha112 4 роки тому +8

    "super simple" 😂 this is some amazing stuff, but there's not a lot of sub fields of robotics than can be considered simple in my opinion. This requires a lot of knowledge of a lot of topics, so don't play yourself down ^^. Thank you very much for making it understandable!

  • @MultiUroX
    @MultiUroX 4 роки тому +41

    mayze forze bez with you :D

  • @Sigmatechnica
    @Sigmatechnica 4 роки тому +29

    I like this style of actuator but they are all so expensive :( still geared dc motors and steppers for me!

    • @excitedbox5705
      @excitedbox5705 4 роки тому +6

      Look at gimbal motors on aliexpress. Same style but much more affordable.

    • @Alex-kr7zr
      @Alex-kr7zr 3 роки тому

      Still cheaper and more compact than a typical strainwave geared AC drive actuator used in robotics, and they get significantly cheaper with higher volume.

    • @Sigmatechnica
      @Sigmatechnica 3 роки тому +1

      @@Alex-kr7zr Yeah progress is being made here for sure. It's just a bit frustrating as a hobbyest that the barrier for entry is still quite high.

  • @TheNamelessOne12357
    @TheNamelessOne12357 4 роки тому +19

    Does these actuators require endstops and homing cycle when used in robot arm, or the position is always absolute and precise?

    • @Skyentific
      @Skyentific  4 роки тому +1

      P Kav it is absolute in the range of one motor rotation (1/6 output shaft rotation). And you don’t need endstops, and you don’t need to do the homing.

    • @TheNamelessOne12357
      @TheNamelessOne12357 4 роки тому +1

      @@Skyentific Absolute encoder? So homing and endstops are still required. Axis 1, for example, can turn much more than 60 degrees.

  • @riyadhzulkifli49
    @riyadhzulkifli49 4 роки тому +2

    Hi sir, at 3:30 i think the Kp, Kd and Ti is the coefficient of the PID controller of a closed loop control of the system

    • @Skyentific
      @Skyentific  4 роки тому +4

      Yes, I think you are right. But when you say coefficient of PID, it is less obvious how to use them. :)

  • @Build_the_Future
    @Build_the_Future 4 роки тому +5

    I wish it was stronger but I love the controller I think it's better than the Odrive except for the lack of power.

    • @Skyentific
      @Skyentific  4 роки тому +1

      Eric lamb ODrive have a lot of possibilities. This one has less control, but it is super easy and extremely fast.

  • @kevinsantanamedina6376
    @kevinsantanamedina6376 3 роки тому

    Nice video, how do they motor know it hit something? like your hand in the minute 6.30 , is it a current sensor or something else? and how is controlling the stiffness? thanks in advance and thanks for the good content

  • @tomcypher3864
    @tomcypher3864 3 роки тому

    Interestion if stiffness and damper are P and D coefficients of PID controller respectively

  • @antongricunov9856
    @antongricunov9856 5 місяців тому

    Your videos are very cool! Thank you for that! I'm from Ukraine and I don't understand English well, but with your accent it's easier for me to understand!
    Please make more robotics and hardware videos! I like and subscribe!

  • @Stigmaru
    @Stigmaru 3 роки тому

    What did you use for the P, V, T, KP, and KD max/min limits? T Motors website seems to list the same (most likely wrong) cookie cutter spec sheet for all their motors and also doesn't provide the KD/KP values at all.

  • @Morkvonork
    @Morkvonork 4 роки тому

    When you dont power those actuators from batteries what kind of power supply do you use for high amperage?

  • @davidalbertopozaaguilar4698
    @davidalbertopozaaguilar4698 4 роки тому +2

    Ausgezeichnet!

  • @anujregmi4582
    @anujregmi4582 4 роки тому

    good work

  • @scienceofgame6270
    @scienceofgame6270 4 роки тому +2

    First of all, thanks for this informative video. Would you compare them with MIT Mini Cheetah, INNFOS, RMD x8, RMD x8 PRO actuators which were in your previous videos? Even though it is a hard comparison, it may guide us.

  • @needsmoorecowbell
    @needsmoorecowbell 3 роки тому

    Hi Skyentific, on Hackaday website there are threads talking about the Steadywin V2 model of Ben Katz motors being a poor quality with the built-in controller being very unreliable and inconsistent (1amp in one direction and sometimes 15 amps in the other).
    Have you noticed any of these types of issues with the tmotor or gems motors? Do they seem to function reliably and consistently forward and back, etc?

  • @MarinusMakesStuff
    @MarinusMakesStuff 4 роки тому +2

    Supercool, if I had three of these I would make such an awesome 3D-printer with it. But I assume these are way out of my price range. Also lovely to see how you can link them together and 'feel' the force that you apply on one end to translate into the second one.

    • @Mr30friends
      @Mr30friends 4 роки тому

      I don't think that motor speed is a concern in 3d printing. It would be kind of an overkill.

    • @TheNamelessOne12357
      @TheNamelessOne12357 4 роки тому

      3D Printer actuator must have no backlash.

    • @evanemanuel1774
      @evanemanuel1774 4 роки тому +2

      If you really wanted to make an awesome 3D printer, you might pick low/minuscule backlash, mid-range speed, high stiffness, and a controller that focuses on precision and not torque or speed. AKA steppers. BUT the very fact that you saw this video and considered what cool things you could make with it, that’s what the world needs. stay inspired my friend

    • @MarinusMakesStuff
      @MarinusMakesStuff 4 роки тому

      @@Mr30friends Maybe I love overkill :)

    • @MarinusMakesStuff
      @MarinusMakesStuff 4 роки тому

      @@TheNamelessOne12357 This will be fine. Trust me. At the scale I'm thinking backlash will not be a problem anyway.

  • @sigmamalerules1106
    @sigmamalerules1106 4 роки тому +3

    First Comment I love your videos .from Bangladesh !

    • @Skyentific
      @Skyentific  4 роки тому +1

      I confirm: first comment. Thank you!

  • @dimitrischreiber9140
    @dimitrischreiber9140 4 роки тому +1

    Do you have a PCIE / Ethernet / USB to CAN adapter you use?

  • @Goodwill345
    @Goodwill345 4 роки тому

    Safety first, you are in the habit of taking your face too close to the moving arms, we don’t want you to get hurt. super good video, Thank you

  • @nosferatuohnezahn6630
    @nosferatuohnezahn6630 4 роки тому +4

    Like everytime, Nice video!

  • @net676789
    @net676789 3 роки тому

    Can I know how you control the the two actuators to perform like that?

  • @Alex-kr7zr
    @Alex-kr7zr 3 роки тому

    Nice, finally we can do remote arm wrestling.

  • @DelanAbbas
    @DelanAbbas 3 роки тому +2

    "Some power for me" lmao

  • @T4nm4y
    @T4nm4y 4 роки тому

    Can you show the movement at max speed? That would be interesting!

  • @KiranTeja
    @KiranTeja 3 роки тому

    what motors and controllers do you recommend for animatronics?

  • @user-eb4kl1uy2c
    @user-eb4kl1uy2c 4 роки тому +17

    С русским акцентом мне даже легче понимать английский язык :).
    И с юмором, что тоже приветствуется!

    • @Skyentific
      @Skyentific  4 роки тому +8

      Спасибо. Отдельное спасибо что не стали Мутко вспоминать :).

    • @SABTEC
      @SABTEC 4 роки тому +1

      А я то думал почему мне все так понятно на слух. Не знал, что автор русский ;). Интересно слушать и смотреть, спасибо!

    • @user-eb4kl1uy2c
      @user-eb4kl1uy2c 4 роки тому

      @@SABTEC Здравствуйте! А я бывший типограф, :) , в совдепии работал на ещё плоскопечатных машинах высокой печати.

    • @ukyakin
      @ukyakin 3 роки тому

      Да-да, полностью поддерживаю)!

    • @nibunimu
      @nibunimu 3 роки тому

      Русский акцент сразу ударил по ушам. Что бы убедиться в своей правоте открыл описание под роликом, но увидев там какого-то Yoyo Liu был крайне удивлен. Пока не понял что это просто контакт продавца.

  • @sachinthakur6646
    @sachinthakur6646 3 роки тому

    Does it support multi torque in position control?

  • @omarcruz6326
    @omarcruz6326 4 роки тому +1

    Nice

  • @wei1224hf
    @wei1224hf 3 роки тому

    There are at least 3 companies in China producing and selling MIT motors :
    HaiTai Motor, they are the first company producing the MIT motor, as soon as the MIT opensource the motor.
    ZhiQing Dog, they are producing the entire Mini Cheetah dog , and selling it at the price of 1.8W RMB, means 6000$. They have 3 diffrerent types of MIT motor to sell.
    T-Motor , they just start producing the MIT motor this year , Skyentific is introducing this company here.

  • @CyberDunk2077
    @CyberDunk2077 3 роки тому

    Could use them to have adjustable dampening and ride height on an ebike. Price is eyewatering though, Maybe this technology will be more affordable in the future. Good video.

  • @Nathan0A
    @Nathan0A 3 роки тому

    What's the max RPM? Can it run as a servo motor, if so what is the CPR of encoder?> I want to DIY force-feedback game controllers for sim racing and flight sims

  • @gauravphalke5311
    @gauravphalke5311 4 роки тому

    Can your DIY robotic arm write on pape.. if yes please make a video on that.. keep the good work..

  • @Eugensson
    @Eugensson 4 роки тому +2

    Switzerland or Luxembourg? (Judging by the eeepc keyboard)

  • @syedfawad8245
    @syedfawad8245 3 роки тому

    Can you suggest any motor which has a linear ball scew actuator

  • @astasna
    @astasna 3 роки тому

    That what I want to use to design barrier free openings ! Existing ones suck like hell

  • @hysoon6167
    @hysoon6167 4 роки тому +1

    Hi, great video! But 1 question:
    how did you do the bilateral telepresence? Couldn’t hear what you said in the video :(

    • @Skyentific
      @Skyentific  4 роки тому +6

      Everything is explained in the master thesis of Ben Katz. And he took it from this paper: ieeexplore.ieee.org/document/1618740 .
      But basically it is:
      Torque1 = Kp*(pos2-pos1)+Kd*(v2-v1)-K*v1
      Torque2 = Kp*(pos1-pos2)+Kd*(v1-v2)-K*v2

    • @hysoon6167
      @hysoon6167 4 роки тому +1

      @@Skyentific Thank you so much! This is just great!

  • @Dave-nz5jf
    @Dave-nz5jf Рік тому

    where did he get that cool holder?

  • @BoltzVideo
    @BoltzVideo 3 роки тому +1

    Nice video! Do you have a link to the arduino CAN code that you wrote?

    • @akimrain
      @akimrain Рік тому

      Hi, do you have similar motor? how did you control it?

  • @Andre_Beth
    @Andre_Beth 3 роки тому +1

    Sorry if I missed something here, but is this using an FOC library?

  • @prokradima
    @prokradima 4 роки тому +1

    It will be great if you put links on previous videos

    • @Skyentific
      @Skyentific  4 роки тому

      Дмитрий Кравцов yes! You are right!

  • @bradlypring6646
    @bradlypring6646 3 роки тому +1

    Question: Did this motor come with any cables? or do i have to create my own CAN and power harnesses?

    • @Skyentific
      @Skyentific  3 роки тому +1

      I don’t know. I got 1 set of cables (CAN, power, serial) for 2 actuators. So it looks like half a set per actuator. ?!

    • @1119hayabusa
      @1119hayabusa 3 роки тому +2

      One UART, CAN, and Power cables are included per motor package.

    • @akimrain
      @akimrain Рік тому

      @@1119hayabusa hi, how do you control this motor? I have similar ones

  • @jiachen3920
    @jiachen3920 4 роки тому +4

    Hello, good, I wanted to ask if the motor is only capable of controlling the torque or the speed and position can also be controlled.

    • @Skyentific
      @Skyentific  4 роки тому +6

      Yes. You can put torque = 0, this will be position control. If you also set stiffness to zero, this will be speed control. But for speed control there is a drawback: it has a limit at how many turns it can make. It cannot rotate indefinitely like with ESC.

    • @jiachen3920
      @jiachen3920 4 роки тому +1

      @@Skyentific Thank you for your response.

    • @jiachen3920
      @jiachen3920 4 роки тому

      @@Skyentific Sorry I have tried to reproduce your arduino code but I have missed several errors when compiling, if it is not so much trouble if I could upload your code I would appreciate it.

    • @yoyoliu7109
      @yoyoliu7109 3 роки тому

      Hi Jia, this actuator support "position control, speed control, and torque control".

    • @akimrain
      @akimrain Рік тому

      @@jiachen3920 Hi Jia, did you make it work?

  • @user-gz4tr1ho4l
    @user-gz4tr1ho4l 4 роки тому +1

    Вот интересно какую скорость номинальную оно имеет?
    Ньютон-метры это конечно интересно, а RPM то умолчал

    • @Skyentific
      @Skyentific  4 роки тому

      365rpm, I don’t know where you need to have such high rpm. I don’t pay attention at rpm of QDD actuators, because they usually have enough rpm for most of the tasks.

  • @numbperson
    @numbperson 3 роки тому

    Hello! Is it possible for you to share your code for the torque threshold and the bilateral teleoperation? I couldn’t get mine working properly and I can’t find good resources online besides yours! Enjoying your videos!

    • @akimrain
      @akimrain Рік тому

      Hi, do you have also similar motor? how do you operate them?

  • @rahulnarasimhan1669
    @rahulnarasimhan1669 3 роки тому

    What battery can I use for AK80-9 motor?

  • @Not-C-418
    @Not-C-418 4 роки тому +2

    Stupied question : Can i use them as a stepper motors for a CNC

    • @Skyentific
      @Skyentific  4 роки тому +1

      Yes. But steppers are good for CNC. They are cheap, no backlash. And on CNC, you don’t need to have light motors. The feature of this motor: they are light and powerful.

  • @TheRealFrankWizza
    @TheRealFrankWizza 4 роки тому

    How are you doing with computer vision?

  • @ashishsiddharthIIT
    @ashishsiddharthIIT 2 роки тому

    Hi... Can we move it at different rpm...(velocity control mode) I want to move my motor at 1 rpm, 2 rpm... 10 rpm and 100 rpm... with endless rotation.

  • @shiveshkumar1045
    @shiveshkumar1045 3 роки тому +1

    Hi, we started to experiment with these motors after watching your video. However, we find the operation to be noisy. Especially when you push it after setting some Kp, Kd values. Did you notice it as well?

    • @kaifbhojani7979
      @kaifbhojani7979 2 роки тому

      Hello @Shivesh Kumar can you please tell us how are you controlling the motor and which controller are you using.

    • @akimrain
      @akimrain Рік тому

      Hi Shivesh, same question here

  • @drbra1n
    @drbra1n 4 роки тому +1

    Эс олвейс, итс эн амэйзинг видео - грит джоб, френд! Сач э вандефул интрадакшен ин роботикс фо новайс юзерс, лайк ай эм. Рили апришиэйт йор ворк. Гритингз фром Юкрейн!

  • @gerssiwakorn4713
    @gerssiwakorn4713 Рік тому

    I try to control AK60-60 in Ubuntu 20.0.4 with TMotorCANControl Api in python lib but check motor connection method return (RTNETLINK answers: Operation not supported). I have to install some driver? to make TMotorCANControl Api find Can0? (I use R-Link can protocol)

  • @planktonfun1
    @planktonfun1 3 роки тому

    pretty cool, now do send it to another side of the room and try to control

  • @michaelrosenblum2583
    @michaelrosenblum2583 Рік тому

    Hello, fist of all very helpful video, secondly, do you know of a way to program and control the motor using Python rather than Arduino?

    • @akimrain
      @akimrain Рік тому

      hi Michael, did you figure it out? do you have similar motors?

  • @rca168
    @rca168 4 роки тому +1

    I put the like

    • @Skyentific
      @Skyentific  4 роки тому +1

      Raphaël Casimir thank you!

  • @DAG_42
    @DAG_42 3 роки тому

    When that Eee PC from 15 years ago was new... it cost about half as much as one of those motors =O

  • @b5a5m5
    @b5a5m5 4 роки тому

    8:02 Make windshield wipers!

  • @wizardOfRobots
    @wizardOfRobots 3 роки тому

    bilateral telepresence reminds me of the movie Real Steel.

  • @MrGatlin98
    @MrGatlin98 4 роки тому +1

    What is the name of that shield that's being used with the Arduino?

    • @Scott_C
      @Scott_C 4 роки тому

      He said "can bus shield" didn't hear a specific brand. However, I don't think there are many CB shields, and any of them would probably run the motor since it's an international com standard.

    • @MrGatlin98
      @MrGatlin98 4 роки тому

      @@Scott_C Thanks. I noticed that later in the video (I commented too soon lol). I found one online from Sparkfun that looks identical.

  • @aann4546
    @aann4546 3 роки тому

    this might be out of scope...
    but is that a safety goggles or your working glasses?
    or both???
    because it looks cool man......

  • @zahidullah3413
    @zahidullah3413 Рік тому

    @Skyentific, please also share the code of this demonstration.

  • @moldedjelly80
    @moldedjelly80 3 роки тому +1

    When chaining the motors together, is there a trick to the CAN Id and Master Id settings on the motors? I can talk to a single motor fine but when I add another motor in (including the termination 120ohm) I can't talk to any of the motors?

    • @Skyentific
      @Skyentific  3 роки тому

      You need to change id. By default they all have id=1. Master id is usually equal to zero.

    • @Skyentific
      @Skyentific  3 роки тому

      I am actual working on this right now. :))) chaining 3 T-motor actuator.

    • @moldedjelly80
      @moldedjelly80 3 роки тому

      @@Skyentific Thanks very much for your comments and your videos! They've been very helpful. We're working on a camera gimbal system.

    • @moldedjelly80
      @moldedjelly80 3 роки тому

      @@Skyentific I think I'm having problems with our 2 chained motors because the CAN port broke on one after some unexpected operations in testing :(

    • @Skyentific
      @Skyentific  3 роки тому

      Chaining 3 motors works fine as long as I don’t use id higher than 3. For some reason the id 4 and higher (i tried 4, 5, 6 and 7) does not work for me.

  • @karryvenkatesh5116
    @karryvenkatesh5116 4 роки тому +2

    Hi sir, all your videos are Excellent. I want to make a 4 DOF robotic arm of 100 cm reach and 1 kg payload. Are these T motors good enough for my Arm?

    • @Skyentific
      @Skyentific  4 роки тому

      Thank you. No, you would need more powerful actuators. These actuators would overheat quickly with such load. You would need to use actuators with at least 15Nm rated torque.
      store-en.tmotor.com/goods.php?id=1030 this one should work for you. But you will have the precision of around 3-5mm, due to backlash.

    • @Skyentific
      @Skyentific  4 роки тому +1

      Or you can use these actuators with additional reduction stage to increase the torque.

    • @karryvenkatesh5116
      @karryvenkatesh5116 4 роки тому +1

      @@Skyentific Thanks a lot sir for replying. Can i use servo mentioned by you store-en.tmotor.com/goods.php?id=1030 directly at joint without using harmonic gear system and which controlling board you prefer to buy for easy controlling of 4 such servos for my robotic arm. Thank you in advace

    • @Skyentific
      @Skyentific  4 роки тому

      karry venkatesh yes, in my opinion this actuator should work, but your entire arm should be light of course!!! To control you can use arduino with can bus shield or teensy with can bus shield or stm32 or many others. Arduino would be the most simple. Teensy could be a good compromise, relatively simple and quite powerful.

  • @kruhus
    @kruhus 3 роки тому

    На башенных кранах КБ674А устанавливались сельсинов, один на двигателе грузовой тележки, второй в кабине машиниста, эта пара показывала вылет тележки.

  • @wovada
    @wovada 3 роки тому

    Это подхолящий мотор для каких роботов?

  • @martijn4740
    @martijn4740 4 роки тому

    awesome motors dont even want to ask how mutch they cost lol yep i looked damm lol

  • @1119hayabusa
    @1119hayabusa 4 роки тому +1

    Thank you for uploading awesome video !
    In this video, text is output on TeraTerm right after connecting power supply, but it doesn't happen in my environment.
    Can you think of any reason for this?

    • @Skyentific
      @Skyentific  4 роки тому

      Hayabusa Js For me it was always immediately after I connect the power. Are you sure that you connected everything properly? Receiver, Transmitter and ground?

    • @1119hayabusa
      @1119hayabusa 4 роки тому

      @@Skyentific Thank you for your reply, sir.
      I am using FT234X USB-serial converter module and re-checked the connection and baudrate and so on, but it still doesn't work...

    • @Skyentific
      @Skyentific  4 роки тому +2

      Simple question, but just to be sure: do you connect. Your connection should be like this:
      Ground - Ground
      Tx - RX
      Rx - Tx.
      Transmitter to Receiver, Receiver to Transmitter. Please check this. According to 2:12

    • @1119hayabusa
      @1119hayabusa 4 роки тому

      @@Skyentific Yes. I did a lot of checks.

    • @Skyentific
      @Skyentific  4 роки тому +2

      In this case maybe try another usb-serial converter. I don’t know. It should work.
      I had a problem when I was connecting it first time. Because I was using wrong cable (ground was in the place of receiver. And receiver was on the ground place), But on video it is shown correctly.

  • @zombieexpress99
    @zombieexpress99 2 роки тому +1

    Hi, how to callibrate the motor? I could not find the software. Maybe we can callibrate it without the software?

    • @zombieexpress99
      @zombieexpress99 2 роки тому

      I try to follow the steps by connecting it to terra term through the ftdi board. But no data comes out

    • @akimrain
      @akimrain Рік тому

      how did you make it control?

  • @eng.mosabkhlefat3278
    @eng.mosabkhlefat3278 3 роки тому

    What is the price of this actuator

  • @saminsiddiquee2059
    @saminsiddiquee2059 3 роки тому +1

    Is T-Motor better or GYEMS better? please ignore price consideration. thanks

    • @Skyentific
      @Skyentific  3 роки тому +1

      My opinion: Gyems has better mechanics (looks more solid, less backlash), but T-motor has better electronics (easier to control, more possibilities). I even think about taking Gyems actuator, and putting the better electronics (controller inside).

    • @saminsiddiquee2059
      @saminsiddiquee2059 3 роки тому

      @@Skyentific thank you, you are a genius

  • @RomaxSinergy
    @RomaxSinergy 4 роки тому

    *2x518 USD* .. Damn nice gift !!!

  • @SanyogLamsal
    @SanyogLamsal 4 роки тому

    grabcad.com/library/t-motor-u15-kv100-1
    Here's the CAD file for T-Motor KV 100 that I made a few years back.

  • @SoumyaMaitra2008
    @SoumyaMaitra2008 3 роки тому +1

    How did you measure the backlash?

    • @Skyentific
      @Skyentific  3 роки тому +1

      I attached long arm to the output shaft and checked the play at the end of the arm. It is not the real measurements, but rather estimation.

    • @SoumyaMaitra2008
      @SoumyaMaitra2008 3 роки тому

      Skyentific makes sense brother. Very good idea :)

  • @serdaraytemiz9978
    @serdaraytemiz9978 4 роки тому

    Skyentific: Easy!!
    Me: ????

  • @AMATISIG
    @AMATISIG 4 роки тому

    2:29 OMG!! ASUS EEEPC!!!

  • @excitedbox5705
    @excitedbox5705 4 роки тому

    I know these are quality actuators but the price is way out of the range of most hobby projects. Unless you are building some high priced professional product you will be looking at a much more affordable option such as the brushless gimbal motors on Aliexpress.

  • @wizardOfRobots
    @wizardOfRobots 3 роки тому

    wait, you use windows 7!?

    • @sinchrotron
      @sinchrotron 3 роки тому

      I pretty sure he uses door and stairs as well

  • @wei1224hf
    @wei1224hf 3 роки тому +1

    Can you share your arduino code ?
    I have bought a arduino can shield v1.2 and arduino uno, and a MIT motor , but I don't know how to use them bu arduino

    • @Skyentific
      @Skyentific  3 роки тому +1

      To understand how to use it, you can watch my video about MIT mini Cheetah controller (How to Build MIT mini Cheetah controller).
      And this is the Arduino code:
      // demo: CAN-BUS Shield, send data
      // loovee@seeed.cc
      #include
      #include
      /*SAMD core*/
      #ifdef ARDUINO_SAMD_VARIANT_COMPLIANCE
      #define SERIAL SerialUSB
      #else
      #define SERIAL Serial
      #endif
      // Define Joystick connection pins
      #define UP A1
      #define DOWN A3
      #define LEFT A2
      #define RIGHT A5
      #define CLICK A4
      //Define LED pins
      #define LED2 8
      #define LED3 7
      // Value Limits
      #define P_MIN -12.5f
      #define P_MAX 12.5f
      #define V_MIN -65.0f
      #define V_MAX 65.0f
      #define KP_MIN 0.0f
      #define KP_MAX 500.0f
      #define KD_MIN 0.0f
      #define KD_MAX 5.0f
      #define T_MIN -18.0f
      #define T_MAX 18.0f
      // Set values
      float p_in = 0.0f;
      float v_in = 0.0f;
      float kp_in = 20.0f;
      float kd_in = 3.0f;
      float t_in = 0.0f;
      // measured values
      float p_out = 0.0f;
      float v_out = 0.0f;
      float t_out = 0.0f;
      // the cs pin of the version after v1.1 is default to D9
      // v0.9b and v1.0 is default D10
      const int SPI_CS_PIN = 10;
      MCP_CAN CAN(SPI_CS_PIN); // Set CS pin
      void setup()
      {
      SERIAL.begin(115200);
      delay(1000);
      while (CAN_OK != CAN.begin(CAN_1000KBPS)) // init can bus : baudrate = 500k
      {
      SERIAL.println("CAN BUS Shield init fail");
      SERIAL.println(" Init CAN BUS Shield again");
      delay(100);
      }
      SERIAL.println("CAN BUS Shield init ok!");
      // Initialize pins as necessary
      pinMode(UP,INPUT);
      pinMode(DOWN,INPUT);
      pinMode(LEFT,INPUT);
      pinMode(RIGHT,INPUT);
      pinMode(CLICK,INPUT);
      pinMode(LED2, OUTPUT);
      pinMode(LED3, OUTPUT);
      // Pull analog pins high to enable reading of joystick movements
      digitalWrite(UP, HIGH);
      digitalWrite(DOWN, HIGH);
      digitalWrite(LEFT, HIGH);
      digitalWrite(RIGHT, HIGH);
      digitalWrite(CLICK, HIGH);
      // Write LED pins low to turn them off by default
      digitalWrite(LED2, LOW);
      digitalWrite(LED3, LOW);
      }
      long previousMillis = 0;
      void loop()
      {
      //do something
      float p_step = 0.001;
      if (digitalRead(UP)==LOW)
      {
      //move motor forward
      p_in = p_in + p_step;
      }
      if (digitalRead(DOWN)==LOW)
      {
      //move motor backward
      p_in = p_in - p_step;
      }
      p_in = constrain(p_in, P_MIN, P_MAX);
      if (digitalRead(RIGHT)==LOW)
      {
      // Enable
      EnterMotorMode();
      digitalWrite(LED2, HIGH);
      }
      if (digitalRead(LEFT)==LOW)
      {
      // Disable
      ExitMotorMode();
      digitalWrite(LED2, LOW);
      }
      // send CAN
      pack_cmd();
      // receive CAN
      if(CAN_MSGAVAIL == CAN.checkReceive()) // check if data coming
      {
      unpack_reply();
      }
      //print data
      SERIAL.print(millis()-previousMillis);
      previousMillis = millis();
      SERIAL.print(" ");
      SERIAL.print(p_in);
      SERIAL.print(" ");
      SERIAL.print(p_out);
      SERIAL.print(" ");
      SERIAL.print(v_out);
      SERIAL.print(" ");
      SERIAL.println(t_out);
      }
      void EnterMotorMode(){
      // Enter Motor Mode (enable)
      byte buf[8];
      buf[0] = 0xFF;
      buf[1] = 0xFF;
      buf[2] = 0xFF;
      buf[3] = 0xFF;
      buf[4] = 0xFF;
      buf[5] = 0xFF;
      buf[6] = 0xFF;
      buf[7] = 0xFC;
      CAN.sendMsgBuf(0x01, 0, 8, buf);
      }
      void ExitMotorMode(){
      // Enter Motor Mode (enable)
      byte buf[8];
      buf[0] = 0xFF;
      buf[1] = 0xFF;
      buf[2] = 0xFF;
      buf[3] = 0xFF;
      buf[4] = 0xFF;
      buf[5] = 0xFF;
      buf[6] = 0xFF;
      buf[7] = 0xFD;
      CAN.sendMsgBuf(0x01, 0, 8, buf);
      }
      void Zero(){
      // Enter Motor Mode (enable)
      byte buf[8];
      buf[0] = 0xFF;
      buf[1] = 0xFF;
      buf[2] = 0xFF;
      buf[3] = 0xFF;
      buf[4] = 0xFF;
      buf[5] = 0xFF;
      buf[6] = 0xFF;
      buf[7] = 0xFE;
      CAN.sendMsgBuf(0x01, 0, 8, buf);
      }
      void pack_cmd(){
      byte buf[8];
      /// CAN Command Packet Structure ///
      /// 16 bit position command, between -4*pi and 4*pi
      /// 12 bit velocity command, between -30 and + 30 rad/s
      /// 12 bit kp, between 0 and 500 N-m/rad
      /// 12 bit kd, between 0 and 100 N-m*s/rad
      /// 12 bit feed forward torque, between -18 and 18 N-m
      /// CAN Packet is 8 8-bit words
      /// Formatted as follows. For each quantity, bit 0 is LSB
      /// 0: [position[15-8]]
      /// 1: [position[7-0]]
      /// 2: [velocity[11-4]]
      /// 3: [velocity[3-0], kp[11-8]]
      /// 4: [kp[7-0]]
      /// 5: [kd[11-4]]
      /// 6: [kd[3-0], torque[11-8]]
      /// 7: [torque[7-0]]
      /// limit data to be within bounds ///
      float p_des = constrain(p_in, P_MIN, P_MAX); //fminf(fmaxf(P_MIN, p_in), P_MAX);
      float v_des = constrain(v_in, V_MIN, V_MAX); //fminf(fmaxf(V_MIN, v_in), V_MAX);
      float kp = constrain(kp_in, KP_MIN, KP_MAX); //fminf(fmaxf(KP_MIN, kp_in), KP_MAX);
      float kd = constrain(kd_in, KD_MIN, KD_MAX); //fminf(fmaxf(KD_MIN, kd_in), KD_MAX);
      float t_ff = constrain(t_in, T_MIN, T_MAX); //fminf(fmaxf(T_MIN, t_in), T_MAX);
      /// convert floats to unsigned ints ///
      unsigned int p_int = float_to_uint(p_des, P_MIN, P_MAX, 16);
      unsigned int v_int = float_to_uint(v_des, V_MIN, V_MAX, 12);
      unsigned int kp_int = float_to_uint(kp, KP_MIN, KP_MAX, 12);
      unsigned int kd_int = float_to_uint(kd, KD_MIN, KD_MAX, 12);
      unsigned int t_int = float_to_uint(t_ff, T_MIN, T_MAX, 12);
      /// pack ints into the can buffer ///
      buf[0] = p_int >> 8;
      buf[1] = p_int & 0xFF;
      buf[2] = v_int >> 4;
      buf[3] = ((v_int & 0xF) > 8);
      buf[4] = kp_int & 0xFF;
      buf[5] = kd_int >> 4;
      buf[6] = ((kd_int & 0xF) > 8);
      buf[7] = t_int & 0xFF;
      CAN.sendMsgBuf(0x01, 0, 8, buf);
      }
      void unpack_reply(){
      /// CAN Reply Packet Structure ///
      /// 16 bit position, between -4*pi and 4*pi
      /// 12 bit velocity, between -30 and + 30 rad/s
      /// 12 bit current, between -40 and 40;
      /// CAN Packet is 5 8-bit words
      /// Formatted as follows. For each quantity, bit 0 is LSB
      /// 0: [position[15-8]]
      /// 1: [position[7-0]]
      /// 2: [velocity[11-4]]
      /// 3: [velocity[3-0], current[11-8]]
      /// 4: [current[7-0]]
      byte len = 0;
      byte buf[8];
      CAN.readMsgBuf(&len, buf);
      unsigned long canId = CAN.getCanId();
      /// unpack ints from can buffer ///
      unsigned int id = buf[0];
      unsigned int p_int = (buf[1] 4);
      unsigned int i_int = ((buf[4] & 0xF)

    • @wei1224hf
      @wei1224hf 3 роки тому +1

      @@Skyentific Thank you so much!
      I'm still testing my motor with LessStudio's CAN-BUS Shield V1.2 with a MIT motor.
      My step is holded on the CAN-BUS Shield , I think it might somthing wrong with the shield, it's creating CAN message by it's own, with CAN-ID 0x1FFFFFFF , when the motor is poweroff.
      so depressed ......
      I'm buying a sparkfun's CAN-BUS Shield, just excacly like your shield , then I'll try again.
      Thank you for your share ^_^

    • @BoltzVideo
      @BoltzVideo 3 роки тому

      @@wei1224hf Hi Wax Feng, did you manage to get the actuator working? I have tried with Arduino and also STM32 but had no luck.

    • @wei1224hf
      @wei1224hf 3 роки тому +1

      @@BoltzVideo Yes I can now.
      I'm using a usb-can module, it's really easy, I can control the actuator directly by linux terminal code
      item.taobao.com/item.htm?spm=a1z09.2.0.0.77452e8dQKKopi&id=592036191992&_u=c1v6uidt1ca7

    • @BoltzVideo
      @BoltzVideo 3 роки тому

      @@wei1224hf Thanks! I'll try USB-CAN.

  • @rus.physics5523
    @rus.physics5523 3 роки тому

    Лондон из зэ кэпитал оф Грейтбритан!

  • @jesusdemiguelfernandez2550
    @jesusdemiguelfernandez2550 3 роки тому

    Hi! My driver has enter in fault mode and using the terminal monitor I can see the following message. How could I exit from the fault mode? Thanks!
    FAULT
    VDS_OCP
    GDF
    UVLO
    OTSD
    VDS_HA
    VDS_LA
    VDS_HB
    VDS_LB
    VDS_HC
    VDS_LC
    SA_OC
    SB_OC
    SC_OC
    OTW
    CPUV
    VGS_HA
    VGS_LA
    VGS_HB
    VGS_LB
    VGS_HC
    VGS_LC

    • @Skyentific
      @Skyentific  3 роки тому

      What power supply you are using? Are you sure that it is 24V and 10A at least?

    • @jesusdemiguelfernandez2550
      @jesusdemiguelfernandez2550 3 роки тому

      @@Skyentific I've checked the power supply and everything seems to be ok 24 V and 10A. I'm using this one: www.amazon.es/alimentaci%C3%B3n-regulada-conmutada-ordenador-impresora/dp/B07VLBF85L/ref=sr_1_58_sspa?__mk_es_ES=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=FUENTE+ALIMENTACION+ORDENADOR&qid=1599151904&sr=8-58-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUE4S0RTMzg4MU9GNVImZW5jcnlwdGVkSWQ9QTA0NzYxNjcyMEhXQTIxQjFWQVhXJmVuY3J5cHRlZEFkSWQ9QTAxMzI4MzFOWVNVMUdNTzJJS1gmd2lkZ2V0TmFtZT1zcF9idGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

    • @Skyentific
      @Skyentific  3 роки тому

      You are using 24V right? You put the link for the 36V. If I am not mistaken all these faults are coming from driver (DRV8323rs). You can find the manual and check these faults. If I remember right, these faults are clear automatically, as soon as, the fault cause is resolved.

  • @bluegizmo1983
    @bluegizmo1983 4 роки тому

    That's a pretty cool actuator, but at $569 USD?! 😬