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  1. Re: How to remove side effect caused by drilling holes on aluminum?

    There are ways to grind the drill bit for soft metal but unless you are good with sharpening drill not try just use as flat a drill bit as you have
    in the photo you are using to much pressure and...
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    Discussion Re: ROS for hobby use

    Hi All
    I'm a hobbyist and i run ROS on 2 robots they are rovers 1 runs ROS on a beagleBoard motors are controlled a arduino uno soon to a adruino due. The beagleboard is a pain to use for a amateur...
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    Re: 3D Printer recommendations

    They look good but with no force or heat its hard to tell
    try printing a hollow cube (from the reprap site under calibration) look for gaps in the layer use .3 mm layers and print 3 or 4 one after...
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    Re: 3D Printer recommendations

    Mine is a J head one problem i had early on was the pitch bearing in the extruder was to small so the filament was not gripped with enough force some time it worked and other it didn't that caused...
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    Re: 3D Printer recommendations

    I have found the Z axis adjustment is not that important i have got good prints with the nozzle dragging on the bed for the first layer and bouncing over the high point for the next 2 layers (just...
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    Re: 3D Printer recommendations

    I have a home built Prusa and i went through the same problems you should put a fan on the hot end because the barrel heats up i found the best way to clear a blockage is to set the temp higher than...
  7. Question(s) Re: Is this reasonable?? (InMoov AX-12 Variant)

    Inmoov has a fourm https://groups.google.com/forum/#!forum/inmoov
    I have built the arm and have it running in ROS. the other option is replacing the servo board with a openservo control board
    My...
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    Re: workspace in ros

    Hi
    Here is a copy of the end of my .bashrc file
    just add what you need
    export ROS_ROOT=/opt/ros/electric/ros
    export ES_ROOT=/home/peter/ros/ES_ROOT
    export MONO_PATH=/home/peter/ros/ES_ROOT...
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    Re: workspace in ros

    you are trying to run setup.bash in your workspace which wont be there
    you need to add a package path
    try adding this to the .bashrc file after the reference to setup.bash

    export...
  10. Re: 3D printing Who in the community owns or uses one ?

    I built a RepRap after trying a home built contraption with threaded rods instead of belts but it was very slow I was able to build the parts for a Prusa http://www.reprap.org/wiki/Prusa The speed...
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    Re: Why doesnt no one use hydraulics?

    Hi Robin
    Hydraulics is about flow under pressure fluid from the pressure tank(accumulator) moves the actuator then returns to the tank via a pump to increase the pressure the cycle then repeats....
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    Re: robot management

    Hi Scott
    Thanks for the reply in a nut shell that's it. the time frame is no problem

    peter
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    Re: robot management

    Hi Patrick
    I had a good play with rosbridge and face tracker and i think it will do what i want (with more learning). What i did find is every so often when using face tracker (or the example to for...
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    robot management

    After spending a couple of months concentrating on building the omni base for my robot its was time to start running the robot with all its previous features and functions. I was shocked to discover...
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    Re: Anyone using omnidirectional drive?

    Thanks Patrick I seen Planet.ros awhile ago never thought it was for the hobbiest but anyway I registered now all i have to do is write more :.)

    Peter
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    Re: Anyone using omnidirectional drive?

    Omni_bot Update
    Since the last update I have been using the omni_bot continuously and improving it performance. Joystick control works well only 1 issue (I need to increase...
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    Re: ros launch issue

    Make sure you have added the following to your .bashrc file
    source /opt/ros/electric/setup.bash
    export ROS_PACKAGE_PATH=/home/peter/ros:/opt/ros/electric/stacks:$ROS_PACKAGE_PATH

    and only 1...
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    Re: Has anyone used a PandaBoard?

    Hi DancesWithRobots
    I just completed a small robot for my son using a BeagleBoard and a Arbotix running ubuntu 11.10 and a source install of ROS electric.
    The biggest problem was rosmake of some of...
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    Re: Anyone using omnidirectional drive?

    Here is a video of omni bot having a its first run it just a simple loop moving in a square my earlier decision on the parts i used (cheep homemade) are now causing problems but these can be replaced...
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    Re: Anyone using omnidirectional drive?

    Omni_Bot Update
    After a few days driving the dual wheel steering it limitations became apparent the wheels were under tension with Ackerman steering greater than about 20 degrees and just locked up...
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    Re: Anyone using omnidirectional drive?

    Fergs
    After having build the casters for my omni bot its not that hard to put it all together. Not having a lathe meant the pivot tubes had to be made out of plumbing fittings not a machined tube...
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    Re: Anyone using omnidirectional drive?

    Omni Base Update
    I finally finished stage 1 of the omni drive base all the motors work and steering also works the base is 45cm wide and 54 cm long but it is still cramped in the base the casters...
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    Re: Anyone using omnidirectional drive?

    Omni Drive Update
    Over the last couple of weeks I started building the omni drive base this is essentially a junk yard bot built from what I had laying around or parts from work. The drive base is...
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    Re: Anyone using omnidirectional drive?

    Hi All
    I just ordered some parts and will start building the base on the weekend at the moment it will be 4 driven wheels with 2 steering motors and chain linking 2 wheels. This will be a slow...
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    Re: Anyone using omnidirectional drive?

    Hash
    This one looks interesting
    http://www.youtube.com/watch?v=ax_dtCUUKVU

    http://www.team221.com/order.php?cat=3

    peter
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    Re: ROS + Serializer

    Hi Patrick
    I downgraded to pyserial 2.3 and every thing works
    peter
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    Re: ROS + Serializer

    Hi Patrick
    I tried the serializer package with ubuntu 11.4 64bit and the beta version of ros electric and i got this error

    11.4 uses pyserial 2.5 could this be similar to the windows pyserial bug...
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    Re: ROS + Serializer

    Hi Patrick
    I have 4 sensors published on the topic /serializer/sensors when i do a rostopic echo /serializer/sensors i get
    all 4 values how do i get just 1 of them ?


    I 'm after the gyro value...
  29. Thread: Simple_Arms

    by Peter_heim
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    Re: Simple_Arms

    Hi Fergs
    Thanks for the help it now works with the following


    Peter
  30. Thread: Simple_Arms

    by Peter_heim
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    Simple_Arms

    Hi Fergs
    I just checked out the simple_arms package and it complies on my system
    but when i try simple_arm_server_test.py i keep getting false
    my arm is a 5 dof with the servos (AX 12) just...
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    Re: Anybody still using PML?

    Hi Fergs
    I stopped using the PML when the kinect came out

    Peter
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    Re: Safe temperature limit on AX-12/RX-24?

    Hi
    Over the past 6 weeks I have rebuilt Robbie's arm about 4 time chasing various problems relating to over load's and over temps I run the servos at 12 volts any servo under load has a temp above...
  33. Thread: Ar_kinect

    by Peter_heim
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    Re: Ar_kinect

    Hi Fergs

    I'm using the latest kinect drivers and i can see /camera/rgb/points in rostopics
    below is the ar_kinect file




    Regards Peter
  34. Thread: Ar_kinect

    by Peter_heim
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    Ar_kinect

    Hi Fergs
    I just tried the latest version of ar_kinect (r250)
    but as soon as i connect to pointclouds or color_image ar_kinect crashes with this error



    I'm running diamondback on ubuntu 10.4...
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    Re: How would you build a Dynamixel torso joint?

    Patrick
    I think even with a large thrust bearing fast and out of balance loads will still cause a problem. A while ago i tried using a taper bearing (wheel bearing ) with a bolt to provide pre load...
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    Re: How would you build a Dynamixel torso joint?

    Hi Patrick
    I use a similar thing for my arm base (200mm dia) I just use a servo in the center and a bracket i made a spacer to connect the servo to the arm base the height from the bottom of the...
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    Re: Maxwell: A Mobile Manipulator

    Hi Fergs
    very impressive video i have tried goto.py and it works for me. In the video you had a mike on ( that was you?) was that for the video or to control maxwell?
    I have been playing with voice...
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    Re: Neato + ROS!

    Hi Fergs
    I just reloaded coreslam again i had to change the SVN url in makefile.coreslam to
    openslam.informatik.uni-freiburg.de/data/svn/tinyslam/trunk/
    to get it to build


    peter
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    Re: 3D Head Tracking Tutorial - Part 1

    Patrick
    How dose ROS handle linear motion? I need to make my robots head telescope 20cm up and down (to fit under a bench)
    I can do it with pullies and a motor but how do i change the frame ref for...
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    Re: 3D Head Tracking Tutorial - Part 1

    Hi Patrick


    I must have a older version on my desktop, when i transfered the head assy to the robot the GUI worked

    peter
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