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Misc / Re: Articulated Robot Question
« Last post by mklrobo on January 14, 2022, 02:11:16 PM »
 :) Hello!

     To add to the discussion;

    If you remember, the HERO robot came out in 1984, and was one of the most
loved robots of all time.  :-*  It did have wheel drive, movable guide wheel, and an
"articulated" arm.
   the HERO Jr. was the second most popular, but only had drive wheels
and a guide wheel.

   So, there you have it!  ;D Functionality and cleverness of the device makes the
robot!
   Depending on your function, it could be the best robot in the world, who knows?  ???

see you same robot channel, same robot time!1  8) excelsior!   8)
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Misc / Re: Articulated Robot Question
« Last post by mklrobo on January 14, 2022, 01:47:38 PM »
  ;D  Hello!

     I would assume 2 or more joints, or degrees of freedom, would constitute
an articulated robot. Mousetraps are considered to be a type of "robot" to
some definitions, but I would not call it a robot.
    If the robot is a moving base or arm, but has no intelligence with the
function it is performing, then that would be a sad robot.  :'(
    Google 's Alexa has no arms, but can do alot of work. In this sense, if you could make a
body for Alexa, to respond to physical commands coupled with the original
intelligence, you will have a interesting robot!  ;)

    Anyway, good luck on whatever you are working on!!  ;D

 see you same robot channel, same robot time!  8) excelsior!  8)
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Misc / Articulated Robot Question
« Last post by meilingerwooddesign on January 06, 2022, 05:46:46 PM »
Does a cylindrical robot with 2 vertical rotary joints (one on base, one on arm) make it articulated?
If so, when I remove one rotary joint (base or arm), does that make it non articulated?
Thanks
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 8)  excelsior!   8)

   Hello again!   ;D

   Another tactic your could do, is to buy a truck with the motors already on it; take them
off and use those on your project! Sounds crazy,  :o  I realize, BUT, you know those
motors work, AND, as cheap as the RC vehicle get, you probably will pay almost the
same price!  ;)

Good luck with your project!! see you  :) same robot time, same robot channel!!   :)

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Misc / Re: Test, just a test
« Last post by mklrobo on November 23, 2021, 07:36:39 AM »
 8)  Excelsior!!!   8)
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Misc / Test, just a test
« Last post by Malcolmcig on November 21, 2021, 01:42:36 PM »
Hello. And Bye.
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 8)  excelsior!!   8)
   

    Hello! I reviewed the info on your motor;
" The Turnigy TrackStar Sensorless Brushless Motors offer outstanding performance at an incredible price!

Featuring a quality CNC motor can, hand-wound high purity copper windings and powerful sintered neodymium magnets, you wont find a better priced motor of this caliber anywhere else!

The Turnigy TrackStar brushless motors make a great upgrade for 1/8th short course trucks, monster trucks, buggies or anything else that uses 42 size motors.
"

  According to the advertisement, I would think the motor would have no problem with the application you are trying
to do. However, " there is many a slip, between the cup and the lip".   :'(

   What I am saying, is consider the following;

1> review the DC power supply you are using - will it deliver the required amps, and more?  ;)

2> experiment with loads on the wheel with the step programming to find out the parameters of
     what might be going on. - save the data, as this will help you navigate problems in the future.  :-[

3> try a gear down transmission - the motor is rated for running fast, which is great, but may not
     deliver the torque advertised. (reviews for the motor are great IF you have a RC boat)  :-X

  I went through the internet briefly looking for reviews of the motor, and found great reviews for RC boats,
but not any for trucks or wheeled vehicles.  :-\

  Good luck with your project!  ;)

  see you same robot time, same robot channel!   8)

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I am trying to drive a wheel with a brushless DC motor controlled by an ESC connected to an Arduino. When there is no load on the motor I am able to run the motor fine, so I know the Arduino program and wiring works. However, once I attach the wheel I want to use, the motor (not the ESC) rotates the wheel a little, starts beeping, and shuts off. The wheel should be well within the torque range of the motor. The motor does this if I also program a large step input for speed, so I think this is some kind of safety feature. Has anyone heard of anything like that? How do I control this motor properly?

Link to motor: https://hobbyking.com/en_us/trackstar-1-8th-2050kv-brushless-sensorless-motor.html#qa[bW9kZT03JnBhZ2U9MSZxdWVzdGlvbl9zZWFyY2hfY29udGVudD0=]

Link to ESC: https://www.amazon.com/dp/B08HWQ58QX?psc=1&ref=ppx_yo2_dt_b_product_details
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Mechanics and Construction / Re: Do you think this robot movement is useful?
« Last post by naffoff on November 09, 2021, 02:17:50 AM »
Hi!

I am so sorry for not replying sooner!

Yes it can move in quite flexible way,  what I am experimenting with that I have not seem tried before, is using casters but without powering the pivot point, so you have to use the speed of each wheel to move the car to change direction of the wheels.
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Mechanics and Construction / Re: Do you think this robot movement is useful?
« Last post by mklrobo on November 04, 2021, 12:18:48 PM »
 8)  excelsior!   8)

  I love this robot!!!!   ;D

   It looks like all the drive wheels can be moved independently, thus, making
turns on corners in cramped spaces a breeze.

   It first glance, I would think that a type of movement model could be articulated
to give a prediction of how effective this would be in a cramped environment.(like someone's house)

     I am wonder is 2 chassis could be used; one for traveling, and one for close quarters turning, a
chassis within a chassis?
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