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  1. Replies
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    Re: MX-64- which model of Maxon motors?

    thanks for the reply tician!
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    that's great!
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    MX-64- which model of Maxon motors?

    Does anyone know which Maxon motor is used for MX-64? There is some number on the motor but could find it in the online catalog
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    Oh ok. Thanks tician!

    Hi jwatte, compliance is for RX-64 not MX-64
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    Hi tician,

    I read the explanation you gave in that link. In that you say:
    "...Once deltaP is less than or equal to the Margin, the MOSFET driver is turned off"

    Does that mean, the torque...
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    thanks tician, jwatte!

    the documentation for dynamixel is a bit confusing at times. In compliance margin/slope section, they say the diagram shows the relation between the position and torque of...
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    Another doubt regarding the encoder, is the encoder installed before or after the gears? (in MX64)

    Also, there is note in Dynamixel documentation which says:
    "Current load is inferred from the...
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    Question(s) Re: JTAG and I/O pins shared

    ok. thanks for the tip!
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    Question(s) JTAG and I/O pins shared

    The microcontroller I am using (TI MSP430G2231) has the JTAG and P1.4-7 are shared. I plan to use the same pins for a motor driver IC (TI DVR8801). Do I need to do anything extra in my circuit design...
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    Even I think it's just a matter updating the firmware. I was just curious as to why they've haven't done it. May be for humanoid robots mutli-turn is not really a requirement.
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    Thank you for your reply!
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    Question(s) Re: Dynamixel servo- 'Deadzone'

    Thanks for the prompt reply.

    I have one more question related to this. This might be a very silly one:
    Why is a quadrature encoder not used in other dynamixels? Is it too expensive? or bulky?...
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    Question(s) Dynamixel servo- 'Deadzone'

    Hi all,

    I wanted to know the reason for having a 'dead zone' in dynamixel servos when running in Joint mode. In RX-64, there is a 60 deg deadzone and in MX-64, I understand there is no deadzone...
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    Question(s) Re: Smooth motion using EX106, RX64

    Hey Th232,

    Once I started focusing on the timing, the movement is much smoother now. Thanks all lot for the tip. I need to work on my code a bit more
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    Question(s) Re: Smooth motion using EX106, RX64

    I will try out with the timer. Let me see how it goes...

    thanks!
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    Question(s) Re: Smooth motion using EX106, RX64

    Just to add...the smallest step I could do without affecting the performance was 3 deg.
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    Question(s) Re: Smooth motion using EX106, RX64

    Thanks for your reply.

    I am using the inverse kinematics of the arm.

    I did the same thing! I broke down the motion of each motor into step (the number of step was decided based on the amount...
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    Question(s) Re: Smooth motion using EX106, RX64

    Distance can be anything as I set the end-point co-ordinates of the arm along a line with different distance between each points. The distance for the motors can be as low as 50 counts to upto 500...
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    Question(s) Smooth motion using EX106, RX64

    Hello everyone,

    I have been working on a robotic arm project. We are using Dynamixel EX106 and RX-64 motors for the arm. I have interfaced the motors to the PC using USB2Dynamixel. I'm programming...
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