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    News/Announcement Re: The Robotis TurtleBot3

    And thought I would mention, they also have created a new online ROS course for beginners:
    ...
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    News/Announcement Re: The Robotis TurtleBot3

    I am having fun with it. Lately been doing more with the underlying board (OpenCR). I will get back to doing main turtle stuff soon.

    You can obviously do it either way. It is sort of nice...
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    Question(s) Re: Problem to reed torque value from Dynamixel

    It is hard to give you any complete answer without knowing the current code and the how all of the servos are configured. It might help to see hopefully a small self contained program that...
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    Question(s) Re: Problem to reed torque value from Dynamixel

    Hi @urko_18,

    Sorry I missed your last post on this a couple months ago. I see you asked the same question recently up on the Robotis forum:...
  5. Re: Simultaneously run 2 or more Dynamixel Motors via OpenCM9.04

    With questions like this you might want to ask it on the Robotis forum: http://en.robotis.com/service/forum.php

    Simple answer: Yes you can control multiple servos.

    Hard to give any complete...
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    News/Announcement Re: The Robotis TurtleBot3

    Not sure if anyone is interested, I extracted the alternate pin information from the processor manuals for the OpenCR and combined it with the Arduino pins information, to be able to see what...
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    News/Announcement Re: The Robotis TurtleBot3

    Thanks for the heads up.

    I have not had not tried to have the wheels turn for a bit as I am still playing with the firmware for the openCR board.
    I have another SPI port working on the...
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    Re: How do I change my avatar picture?

    Maybe: Open your control panel:
    http://forums.trossenrobotics.com/usercp.php

    Then I believe there is a list of items. One of which is Edit Avatar...
  9. Re: Dynamixel bulk read behavior on missing servo

    You might want to ask on the Robotis forum: http://en.robotis.com/service/forum.php

    Don't have your setup... But you might try simple test and disconnect one of the servos and see what happens... ...
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    Re: Phantom_Phoenix on OpenCM 9.04...

    Hi Kåre,

    Thanks, I have not been doing very much with it lately, both due to it being spring time here and lots of stuff to do outside. Also been playing with Turtlebot3 and a lot with their...
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    Re: Phantom_Phoenix on OpenCM 9.04...

    Thought I would mention, that now that I received a fresh OpenCM9.04C board (after a month wait), that I would finally assemble one of my XL430 Hubs, to work directly with the OpenCM...

    The board...
  12. Question(s) Re: Poor quality of PhantomX Reactor slewing ring?

    Sorry, I am not much help there. I have one of their Arms, that I received when they first were coming out. I have not done much with it in a long time. I sometimes use it to test out some...
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    News/Announcement Re: The Robotis TurtleBot3

    I am trying to help out, as a way to learn things.

    I hope my pestering them, is helping to improve things as well.

    Over the last few days, I have been playing around with some some...
  14. Question(s) Re: Poor quality of PhantomX Reactor slewing ring?

    Have you contacted Trossen, either by phone or email? Maybe there was a defective part...
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    News/Announcement Re: The Robotis TurtleBot3

    I thought i would mention, that Robotis released a new update for the Turtlebot3 code base. They announced it in:...
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    News/Announcement Re: The Robotis TurtleBot3

    So I now have three other options that I ordered that shipped today.

    I have 4 of the Robotis Distance sensors: Distance Measuring Sensor DMS-80
    Distance Measuring Sensor DMS-80

    I have 4 of...
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    Question(s) Re: Problem with the firmware of one Dynamixel

    Again maybe post at Robotis forum: http://en.robotis.com/service/forum.php

    They may have other suggestions and/or if they think the servo is defective they may issue you an RMA...
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    News/Announcement Re: The Robotis TurtleBot3

    I am glad you have it all working!

    With the cliff detection stuff, I have code setup currently in simple test app, that currently can read three of the VL6180 sensors from Adafruit. They are I2C...
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    Question(s) Re: Problem with the firmware of one Dynamixel

    Not sure, what is wrong. I assume you realized that if you change the baud register it will no longer be able to communicate back to the host, until you setup the communication to go to the new baud...
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    News/Announcement Re: The Robotis TurtleBot3

    I don't remember... I should try it again in the next few days. Been playing around with other stuff. Third deck is sitting on table next to it right now...

    Too many distractions. Like now...
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    Re: Robotis OpenCR1.0 boards

    Again not sure how many people might be interested, but I have been hacking on the OpenCR Arduino installation, to make it easier for myself to build the Arduino program that runs on the OpenCR board...
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    Question(s) Re: Problem with the firmware of one Dynamixel

    Not sure which version of firmware you updated to. i.e. are you protocol 1 or protocol 2...
    But you should still be able to change the baud rate of the servo back to 1000000..

    You should be...
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    Robotis OpenCR1.0 boards

    Not sure who if anyone might be interested,

    The Turtlebot 3 robots come with the OpenCR boards, which they use to control the servos plus several other tasks. At first look you could say it is...
  24. Thread: UP Board

    by KurtEck
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    Discussion Re: UP Board

    Yes - I have a couple of the Up boards sitting here. One that came with the same kit you purchased and another that I purchased direct from Europe (to replace the one that I accidentally plugged 12v...
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    Question(s) Re: Problem - My Dynamixels lose their IDs!

    Note: I don't have any MX servos... Nor any RS485 based servos. But have had times with AX-12 servos that one or more servos would reset to ID #1... And I know many others have as well.

    I have...
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    News/Announcement Re: The Robotis TurtleBot3

    Sounds great - As you know I also have the same UP board and R200 camera, which I keep meaning to get everything back in one piece again.

    I keep having too much fun playing at some of the lower...
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    Re: PhantomX Hexapod Boot Delay?

    Is this still a standard setup with Arbotix-m board?

    What software?

    Is there something at the start of setup that is doing something like:

    while (!Serial && (millis() < 5000)) ;
    This...
  28. Question(s) Re: How to do Wireless Upload of Sketches to Phantom Hexapod

    My guess is you would have to modify the board. Yes it is a shame that they did not add maybe semi-standard unpopulated .1" header pins to each of the XBee pins, such that you could easily solder...
  29. Thread: Hexapod build

    by KurtEck
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    Re: Hexapod build

    @jwatte:
    Yes with SSC-32 doing most of the work, getting smooth movement is not as bad as for example using RPI to control AX servos with the RPI doing the interpolation of the moves.

    But...
  30. Thread: Hexapod build

    by KurtEck
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    Re: Hexapod build

    Yes Raspberry PI does have more power than most Arduinos... However it is unclear, how much you need?

    For example there have been several hexapods built in the past with RC servos using the...
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    Re: Hexapod in vertical surfaces

    Again I am guessing that there is a thermal shutdown of the servo.

    As Kevin mentioned, when you are in a vertical position the Coxa servos are having to support all of the weight.

    My...
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    Re: Hexapod in vertical surfaces

    Again it sounds like thermal shutdown... Luckily with AX servos I think most of the time the servos are not damaged... But I believe that may not always be the case with some other higher priced...
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    Re: ESP32 Support ?

    As for cost... I believe you can get an RPI Zero (no wifi) for about $5 and the RPI Zero W for about $10...

    So cost is not much of the issue here. Although you probably also have to add an...
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    Re: ESP32 Support ?

    There is of course another real simple approach...

    Use one of the ESP32 UARTS and connect it up to one of the UARTS on something like an OpenCM9.04 boards and have it drive the servos ;)

    Or on...
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    Re: ESP32 Support ?

    I agree with Tician! You probably would need to add hardware to do this, which I mentioned earlier 2) in a few posts ago about probably software support already there, may take a tweek...

    Note: I...
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    Re: ESP32 Support ?

    Not really, like others I have enough projects to keep me busy.

    As for not knowing how to get the Usart into half-duplex mode, neither do I...
    If you look at their documents, like:...
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    Question(s) Re: Problem to reed torque value from Dynamixel

    The dxlGetTorque simply translatest to:
    #define dxlGetTorque(id) (dxlGetRegister(id, AX_PRESENT_LOAD_L, 2))

    Which when -1 implies that the dxlGetRegister failed. Why? That is always the hard...
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    Re: ESP32 Support ?

    Actually I am not sure, how this will work with ESP32... Likewise I am not sure how you wish to hook it up.

    With the Teensy 3.x boards, it works two different ways:

    1) Without any need for...
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    Re: Hexapod in vertical surfaces

    Ok that Is some of the original Nuke code base...

    The code all flows to using the bioloid library to do the step interpolation... It looks like it has not been touched up on Github since Andrew...
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    Re: Hexapod in vertical surfaces

    Which guide? Could you post a link or the like, so I have an idea of which code you are using...

    Are you working off this page? http://www.trossenrobotics.com/phantomx-ax-hexapod.aspx

    If so...
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