Search:

Type: Posts; User: Snoopy; Keyword(s):

Page 1 of 4 1 2 3 4

Search: Search took 0.00 seconds; generated 2 minute(s) ago.

  1. Replies
    8
    Views
    215

    Re: Questions about powering

    Thanks KurtEck. Yes, I worry that accidentally I may connect the + pins of the batteries together and damage those expensive motors. So better to use only one battery for all the dynamixels?
  2. Replies
    8
    Views
    215

    Re: Questions about powering

    Thanks. I know the concepts of serial and parallel connection of batteries as shown below.

    https://batteryuniversity.com/learn/article/serial_and_parallel_battery_configurations

    However, I...
  3. Replies
    8
    Views
    215

    Re: Questions about powering

    Thanks jwatte. Am I correct that I also have to connect the ground of the controller, PC or SBC and the batteries for the dynamixels?
  4. Replies
    13
    Views
    12,475

    Re: Voltage for 6 Port AX/MX Dynamixel Power Hub

    Hi, I have seen several forum users using this hub on their nice hexapod robots. Some use only one hub but others use more than one.

    1. Besides having more ports at convenience locations, what...
  5. Replies
    8
    Views
    215

    Questions about powering

    Hi, I recall reading something like if two batteries connecting to a system of dynamixels within the same robot are not of the same capacities or at different charge levels, then the dynamixels could...
  6. Re: What are the pros and cons of buying the required number of Dynamixel at the same time? Your experience with Robotis return policy

    Thanks. I will check with customs.
  7. Re: What are the pros and cons of buying the required number of Dynamixel at the same time? Your experience with Robotis return policy

    Thanks KurtEck.

    Is there any point to buy all required servos together at the same time?
  8. What are the pros and cons of buying the required number of Dynamixel at the same time? Your experience with Robotis return policy

    Hi, I see some users posting photos of their components before making their robots. What are the pros and cons of buying the required number of Dynamixel all at the same time vs. buying in 2-3...
  9. Replies
    7
    Views
    6,117

    Sticky: Re: Project Khepri - MX 106 hexapod.

    This is a very nice robot. At 1:22, I see a Trossen powered hub on each side with a thick red and black wires. Where are they connecting to? Are they connected to each other and then to a battery for...
  10. Question(s) Re: What is the best way to remove the horn of the Dynamixel?

    Thanks jwatte. I have successfully removed the horn. When I did that, I heard a pop sound. Hope it was just a sound caused by the horn being separated from the shaft.
  11. Question(s) Re: What is the best way to remove the horn of the Dynamixel?

    Thanks. I need to slowly digest your procedure. Maybe 3D print a thick plastic with three or five holes.

    I don't have M2 screws with me so I will need to order online. Giving the outbreak...
  12. Question(s) Re: What is the best way to remove the horn of the Dynamixel?

    Thanks tician. I don't know if the X-Series is similar. What do you think of the tool used in this video? The idea seems to be similar.

    https://www.youtube.com/watch?v=0Xof5-JkpU8

    The width of...
  13. Question(s) What is the best way to remove the horn of the Dynamixel?

    Hi, I inserted a horn on the X-series motor shaft. Then, I found that I was supposed to put a washer in between first. In this case, should I leave the motor as is? Could removing the horn easily...
  14. Question(s) Re: Companies that make aluminum frames and thickness of 3D printed frames

    Nice. Is there a reason you used PETG rather than other materials? What places would need enough plastic?
  15. Question(s) Re: Companies that make aluminum frames and thickness of 3D printed frames

    Thanks jwatte. I made 3D printed frame for the MX-106 in the past but it broke. Yes, setup costs for the first part is a problem. Do you mean if I go for 3D printing, sintered nylon is better than...
  16. Question(s) Companies that make aluminum frames and thickness of 3D printed frames

    Hi, can you please recommend good companies that can make nice aluminum frames at reasonable costs when CAD data are given by the customers? What kind of materials should I choose? In case of using...
  17. Question(s) Re: Do I need LIPO battery to power the Open CM9.04C with the 485 Extension Board?

    Thanks jwatte
  18. Replies
    19
    Views
    10,163

    News/Announcement Re: Turtlebot3 with Openmanipulator

    Based on your experience, do you see any point in getting the $150 base plate when it can be mounted on a TB3 Waffle Plate at 1/10 the cost? I am trying to save some money. I guess one needs to put a...
  19. Re: How useful are broadcast ID, Bulk Read/Write and Sync Read/Write? How often do people use them?

    Thanks KevinO.
  20. Question(s) Do I need LIPO battery to power the Open CM9.04C with the 485 Extension Board?

    Hi, I need some confirmation. If I have one SMPC power adapter, do I need a LIPO battery to power the following systems with dynamixels?

    a) OpenCM 9.04C+485 Extension Board
    b) OpenCR
    c) U2D2 +...
  21. How useful are broadcast ID, Bulk Read/Write and Sync Read/Write? How often do people use them?

    Hi, how often do all of you use these commands? Are these commands useful in controlling a robot with many motors? By using these commands, can I ask different motors to move differently at the same...
  22. Question(s) Re: In practice, any difference between the XM and XH series?

    Has anybody else used both series?
  23. Question(s) Re: Can we get accurate torque and current information from the dynamixels now?

    Thanks tician.
  24. Question(s) Re: Can we get accurate torque and current information from the dynamixels now?

    Thanks tician. Could you please explain what you mean by "flexible shaft" or two ends of a flexible shaft coupling? Do you have a photo? What LiPo capacity would be safe to use if I use high-end high...
  25. Question(s) Can we get accurate torque and current information from the dynamixels now?

    Hi, I recall that when the MX series came out few years ago, users were excited about the possibility to use the motors for torque control but at the end, they found that the motors could not provide...
  26. Question(s) In practice, any difference between the XM and XH series?

    Hi, has anybody used both series long enough to comment? I know the XH series is made of Maxon motor and "advertised" to be more reliable and long lasting. In practice, is the extra money and...
  27. Discussion Re: What would hou do if you could have 1ms loop on the whole robot?

    Hi Xevel, any update on this?
  28. How is the Robotis Dynamixel XH/HM/XL Series compared with the M Series?

    Hello, anybody used both series of motors? How the X Series compared with the M Series in real use?
  29. Replies
    8
    Views
    9,046

    Question(s) Re: How often to recharge LIPO battery?

    Thanks. Assuming that I do a 50% storage charge now and when I need to use the battery again, should I recharge it more?
  30. Replies
    8
    Views
    9,046

    Question(s) Re: How often to recharge LIPO battery?

    Thanks jwatte and Zenta. I bought a SKYRC iMax B6AC version 2 AC/DC Dual Power Professional Balance Charger/Discharger. Have not used it before. Is there a step-by-step guide on how to do what you...
  31. Replies
    8
    Views
    9,046

    Question(s) How often to recharge LIPO battery?

    Hello, is it a good idea to recharge LIPO battery every time after use? How often should we do it?
  32. Re: Oscilloscope and function generator for robotics research

    I have been thinking about this. If the MSO in even the 3000XT is not as good as the Saleae Logic Pro, then there is less motivation for me to get such an expensive oscilloscope.
  33. Re: Oscilloscope and function generator for robotics research

    I have seen some very nice videos of the Saleae Logic Pro. Thanks all for the suggestion. I am now considering Keysight and scopes from other companies. Keysight has a special offer of getting MSO at...
  34. Re: Oscilloscope and function generator for robotics research

    Thanks. Is Logic Analyzer (LA) = data logger + more?
    Am I correct that the LA of Oscilloscope only take 0 and 1 but the Logic Pro 16 can take all 16 analog trains of analog signals if I want?

    The...
  35. Re: Oscilloscope and function generator for robotics research

    I think GW-INSTEK is a Taiwanese company. I have used Agilent products at school before. They are quite good. I guess one advantage of using the Agilent is that the specs could be upgraded later.
    ...
  36. Re: Oscilloscope and function generator for robotics research

    Looks like I may need to pay a bit more. In terms of amounts of noise and quality of input stages/amplifiers, how is Keysight's scopes compared with the GWINSTEK's and the others?


    Is 70MHz...
  37. Re: Oscilloscope and function generator for robotics research

    Thanks for sharing your experience.
  38. Re: Oscilloscope and function generator for robotics research

    Thanks. From the website, for the 4-Channel ones, it costs only an additional US$40 to go from 100MHz to 200MHz.
    However, it costs US$380 to go from 70MHz to 100MHz. Not sure if it is worth to get...
  39. Re: Oscilloscope and function generator for robotics research

    Thanks for your reply. My computer does not have USB-3 port. I plan to buy a new computer this Fall.

    I did some work using a 4 channels scope in the past. I need to see the relationship between...
  40. Re: Oscilloscope and function generator for robotics research

    Thanks. In case I want a 4 channels scope with storage, which products do you recommend?
    If I have the Saleae Pro 8 or 16, I can just use a 2 channels scope rather than a 4 channels one? Not sure if...
Results 1 to 40 of 143
Page 1 of 4 1 2 3 4