I’ve been busy at work with Giger installing some upgrades before Robogames (in the tune of 10x EX-106+ actuators, as well as brand new machined brackets from Rapid Sheet Metal). That said, we decided to use some of the random footage we had taken of Giger to give an overview of the robot in it’s first revision, when it only had RX-64s powering its legs. We’ll have a lot more information, pictures, and video on Giger v2.0 in the near future!
BTW- If anyone is looking for a solid place to get some sheet metal cut/bent or some parts machined, check out Rapid Sheet Metal and their sister company Rapid Machining. I’ll give a bit more in-depth review of them in the followup post where we’ll talk more about Giger 2.0, but I was absolutely blown away by their quality and customer service, so I’ll say it here as well. Check em out! Tell em we sent ya! =)
Okay, not only is this little custom hexapod outstanding looking, it’s control solution is beyond cool! Controlled via a custom iPhone app that utilizes the touchscreen and onboard accelerometer, the iHexi’s IK driven movements are controlled precisely and wirelessly. Check out the forum thread for more info and videos (definitely check out the last video, the quad-variant walking gait is equally awesome)!
Some of you may remember Brainbot, a project directed and funded by the Brain Engineering Laboratory and Neukom Institute at Dartmouth College, designed in collaboration with Jon Hylands and HUV Inc. The purpose of which is to enable the study and practice of brain engineering.
Well, Brainbot is getting a brain transplant into a 1/5 scale top of the line rock crawler chassis, for the purpose of creating a navigation variant. Onboard smarts? A Core 2 Quad, 2.83 GHz, 2 GB RAM, and a 32 GB Solid State HDD, 802.11n wifi, GlobalSat USB GPS, Prosilica gigabit ethernet camera (640 x 480, 60 fps) which plugs into Roborealm, and a Hokuyo UTM-30LX scanner laser rangefinder.
I went out and bought a 1/5 scale RC rock crawler chassis. Just for scale, those tires are 8″ in diameter, and the whole thing is 30″ long. We chose this chassis because it would have no issues going long distances at speed, and it would be able to handle curbs and grass and such with no issues. Being a rock crawler, it also goes slow enough that the sensors can keep up…
Right now, it has the quad core mini-itx mounted, and is being driven around with my Logitech wireless joystick. The motor driver (a Sabertooth 2×25) is controlled from one of my Bioloid I/O boards, which is connected to the bus. A program (written in Squeak Smalltalk) takes the joystick input, and sends speed and steering commands over the bus to the I/O board and the steering servos (AX-12’s).
The ArbotiX Commander is an Arduino Software compatible, open-source XBEE-wireless hand-held controller built specifically for controlling ArbotiX/NUKE powered walking robots (but it can be used to control just about any Arduino powered robot). This gamepad style controller comes ready to be setup with the ArbotiX Robocontroller. The ArbotiX Commander was meant to be hacked, modified, upgraded, and otherwise tinkered with. Add additional sensors, customize it with your own handle grips, or rewrite the firmware sketch in any way you see fit!
Our pals over at Coding4Fun wrote up a pretty extensive, and pretty awesome tutorial on how they made their Wi-Fi Warthog project a reality. Remember Power Wheel toys as a kid? Add in Phidgets, Nerf Guns, computers, and Xbox 360 controllers, and you’ve got yourself a real life videogame!
The video below shows the Wi-Fi Warthogs in action at PDC09!
And… we’re back from our vacations during the holidays and hope that all of you had a great 2009!
Inverse Kinematics can be a scary thing to the robot hobby novice. There is a lot of trig involved, and if you’ve learned anything from reading this blog you’ll know that being Norwegian apparently makes it a lot easier to grasp.
Mike Ferguson of Vanadium Labs has just released NUKE (Nearly Universal Kinematics Engine) in Beta form, which is a comprehensive and easy to use IK system built around the arbotiX Robocontroller. To make things even easier, he’s created a step by step tutorial on how to implement NUKE on your arbotiX based robot.
The Nearly Universal Kinematics Engine (NUKE) is finally out in a first beta. NUKE is a PyPose tool that allows users to setup an IK/Gait engine for their ArbotiX-powered bot, regardless of the size, servo orientation, etc (as long as it fits within an available template). Right now our templates only support 3DOF Lizard-legged 4 and 6 leg robots, however 3DOF Mammal-style leg support isn’t far off, and low DOF Biped support is in the works. This is the same system that powered Issy, Roz, and Jeff to take the top 3 spots at CNRG’s Walker Challenge. It takes about 20-30 minutes to setup your bot once you get the hang of what’s going on. The output is fairly straight forward to expand/alter. It’s mostly been running on Quads, I’ve yet to fully test it on Hexapods (first person to post a video of NUKE powering a hexapod gets a cookie at Robogames..)
Our good friend Jon Hylands, of HUV Robotics (maker of all those awesome 3rd party Bioloid accessories), has recently started a new 4-legged Bioloid based walker named Roz. He is currently using an arbotiX Robocontroller, but has plans to eventually migrate over to a custom Gumstix-Overo platform. He is utilizing the upcoming NUKE (Nearly Universal Kinematics Engine) on the arbotiX, which will be available in public beta in the near future, and is really coming along in his walking gait progress. This has to be one of the fastest AX-12+ servo based walkers I have seen yet, check it out!
Seriously. I’m getting a bit tired of Phoenix hexapod inventor Kara Halverson, aka Zenta, constantly showing everyone up. We get it, you’re awesome at building awesome robots. Could you please just stop and give the rest of us a chance to catch up? It’s just cruel at this point.
The T-Hex is Zenta’s newest creation, inspired by all the Mech Warfare talk buzzing around the forums. He decided to jump in and build a ‘mech like’ hexapod, complete with a whopping 4DOF per leg. And of course, in the process, made the rest of us look like complete amateurs. Aesthetics aside this thing is amazing, and the fact that he has a working IK solution for it already just adds to the fact.
We’re a little late to get this posted, but have been busy working on new robotic monstrosities in our lab, as well as moving to a much bigger facility! Check it out! iHobby was a blast this year.
