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Published on: October 23, 2013 / Comments: None

Keerbot uses steppers and g-code to draw on walls

Although it’s not a new concept, you can’t deny that it is awesome.  The Keerbot is a wall drawing robot.  By hanging on 2 known-length strings, the Keerbot uses stepper motors to shift from left and right, and move up and down by  contracting and letting out string on either side.  While moving a pen/marker/drawing aid makes lines of art.

In some of the demos I see the guys working on getting a spray paint fixture to work.  That could be more interesting than just dragging a marker.  Currently the guys are using vector art, and known CNC utils to generate g-code.  Very similar to how one would do laser cutting/CNC/and 3D printing.

Check out a few more pics and video after the break.  Also make sure to check out the full lineup of videos and details on


Published on: September 18, 2013 / Comments: None

Man Sized WALL-E Robot

I guess you never grow out of playing with cardboard boxes.  This man sized WALL-E robot just goes to show that you don’t have to spend a lot of money on material just to make a shell for your robots.

The WALL-E robot includes a custom 433Mhz transmitter and receiver which uses Holtek HT12E and HT12D encoder and decoders. Atmega8 and Atmega16 were used to format the data being transmitter. The robot comes to life with the help of motors and pneumatic cylinders.

The soda bottles sure looks hackerish if you ask me. I would like to see more details on the pneumatics used in this project.  See more build photos after the break.


Published on: September 10, 2013 / Comments: None

Jack the Ripper is an automated DIY disc changer

Andy had a problem that a lot of us have, we’re ready to move into the future and stream all of our movies (that we legally own of course) to our XBMC media center (or equivalent).  But who wants to take the time to rip your entire collection?  Not me.  So Andy started to rip his and came to the same conclusion.

So he built a robot to automate the boring process of taking a disc from the stack, putting in the drive, taking the disc out of the drive, put it in the finished stack, and repeat.  The build uses mostly 3D printed parts and servos.  The process is controlled by a Raspberry Pi and a laptop.

While the original source function for this is for ripping DVDs, I don’t see why this couldn’t be adapted to ripping audio CDs, or automated cd burning by inserting cd blanks, or direct-to-cd printers, you know to get that freestyle demo of yours out!


Published on: September 6, 2013 / Comments: None

Remote control WheelBarrow ? Hell yeah!

Look I wont lie to you, I hate yard work, so I really like this guy’s style.  Yeah I’d feel sorta weird loading this thing up and driving it to the dump site and letting it take some of the load off of me.  In the build instructions the author says it began life as a robotic mower project (that’s what I really need I tell ya) but ended up making this wheelbarrow instead.

So what’s involved in the build?  First it starts off with just building a giant remote control platform.  Use something beefy like an electric wheel chair.  Add some motor controllers, and an off the shelf radio control interface.  Mount it up to the wheelbarrow platform and you’re almost there.  The tricky part here is rigging up the pneumatic cylinder to dump the load.  The author is running a 24oz CO2 tank, some paintball hoses and a regulator.  All hooked up to a 3 way air valve and turned by high torque servo to lift and lower the ‘dump’. (more…)

Published on: August 20, 2013 / Comments: None

Nintendo audio played in real time by robotic musicians

I just want to start out by saying I love this hack.  With that out of the way…  What we have here is some Raspberry Pi’s and someone’s amazing vision.  First off introducing the band.  The player piano has been converted to run off of MIDI.  The two percussion instruments are solenoids controlled by a Raspberry Pi.

Next we have (I believe) a Raspberry Pi feeding off of the audio coming out of an original NES, and translating the notes into MIDI notes and percussion instructions.  There is a slight delay (due to the translation I suppose) and you can see it but it’s not that bad all the time.  This all comes together having a nice robotic symphony playing your music while you game on.

I would love to re-create this hack, the percussion stuff seems pretty straight forward, but where am I going to find a player piano at a decent price ?

Published on: August 5, 2013 / Comments: None

THOR-MANG, not too many details, but this video is awesome

I haven’t found too many details on this robot.  It looks like it’s a collaboration with ROBOTIS and some universities for the DARPA robotics challenge.  The I, Bioloid site has a little bit of details like this one which translated an article from korean.  I don’t care it’s a full sized biped and its awesome.

Here’s another video of it.


If anyone has some more concrete details I’d love to read about it.

Published on: August 2, 2013 / Comments: 1

Mini R2D2 just made my want list

Michiel has a build log of his mini R2D2 project over at letsmakerobots and its turning out really awesome.  I’ve seen the hard core guys who build full scale replicas but never really thought of building a miniature.  He’s broken the build out into sections like Dome, Body, Legs, etc.



He doesn’t have the electronics section up but he is using a Raspberry Pi and a Picaxe micro controller.  I would  guess the Pi handles the main control paths and the Picaxe doing most of the sensor feedback, servos and leds.