Need a custom link that’s strong and flexible? [RobotGrrl] came up with a method of molding flexible links using 3D printed parts and Sugru.
The link consists of two 3D printed hubs, connected by a flexible material cast in a 3D printed mold. [RobotGrrl] recommends using Sugru to create the link, but you can use homemade Oogoo as a low cost substitute. Dish soap is used as a release agent, and prevents the Sugru from sticking to the mold.
The tutorial includes a detailed guide to modeling the parts in Autodesk Inventor, which serves as a quick introduction to the CAD tool. If you just want to make some links, the STL files are available for immediate 3D printing.
Why would you want DIY flexible links? [RobotGrrl]’s Baitbot is a good example. This tentacle robot uses the links as its core. Check out a video of the Baitbot wiggling and jiggling after the break.
Continue reading “Molding Flexible Links”
So this is what happens when a fan of The Rock-afire Explosion grows up. Meet Compressorhead, a musical trio of hydraulic and pneumatic musical mastery.
Compressorhead is a lean band, consisting of only three members. Stickboy, the drummer, is a four-armed beast reminiscent of [General Grievous] that plays a 14-piece Pearl kit with a double bass. His listed influences include [Danny Carey] and the original MPC60.
Fingers is the guitarist and a wonder of mechanical linkages consisting of 78 hydraulically actuated fingers. Influences include [Yngwie Malmsteen], but with more fingers and less of an ego, we expect Fingers to be an even better guitarist than his idol.
Bringing in the low-end is Bones, the robotic tread-mounted bassist for Compressorhead. Like Fingers, he plays an unmodified instrument. He’s also the newest member of the band, completed in 2012.
If you’d like to check out Compressorhead in person, they seem to be touring Australia right now. If you’d like to schedule them, their rider lists a requirement of 65 Amp, 3 phase power, 3 liters each of hydraulic fluid and motor oil, and suspiciously no requirement for removing all the brown M&Ms from a package. Be sure to check out the videos of the band in action on their media site.
Thanks [BadWolf] for sending this one in.
We love cheap stuff here. Who doesn’t? [Oscar Rodriguez Parra] does too, and wrote in to show us his super cheapey robot L.I.O.S. The build was for the AFRON design challenge, which involves building a 10 dollar robot to teach students robotics. The winners of the challenge were neat and all, but they all look too fancy flaunting their molded plastics and electronics breadboards.
[Oscar’s] design is super simple, LDRs as eyes, a PIC12F683 to do the brainin, LEDs for indicators and a couple modded servos to drive the wheels. An extraordinarily complex cardboard flap roller helps the cart turn, but probably isn’t going to see much aside from smooth flooring. The electronics are mounted using one of our favorite techniques, the paper perf board (very similar to the substrate free technique).
Check out the video after the jump to see LIOS in action. This is an excellent introduction to robotics for any classroom. Thanks [Oscar]!
Continue reading “L.I.O.S.: The ten-ish dollar robot.”
Here’s a quick and easy little robot with a not-so-pint-sized brain. [Dikos] over at grobot, slapped together some gutted micro servos, an Arduino pro mini, H bridge chip, and a solar key-chain charger to make this little three wheeled cutie. The robot boasts some very simple object avoidance thanks to the Sharp GP2Y0A21YK analog IR distance sensor, and that’s about it. This leaves tons of Arduino Pro left for a whole slew of sensors and robot stuff. We can’t spot it but somewhere under the pro mini is the solar key-chain’s 3.7V Lipo battery. The PCB for the emergency charger also makes a convenient little back panel housing a few LEDs, charging electronics, and a handy spot to hang a bead roller.
The micro bot has a pretty mean starboard list due to the lack of wheel position feedback, after all the micro servos were gutted to just function as simple gear boxes. We might have kept the servo mostly untouched, ditched the H bridge and performed a continuous rotation mod. We even have a guide for it! This is a really cool little bot though, and not terribly expensive if you need a little maze roller… or if you have a ton of money and like swarms of things.
Check out a (silent) video of the robot after the jump, the bot doesn’t hit the table until 1:16.
Continue reading “Micro Arduino bot skitters its way into our hearts.”
Last week we reported on the upcoming 2012 Robogames competition would be held in San Mateo, California. Nobody from the Hackaday staff could make it this year, but luckily [Sabrina Merlo] from the Make: blog was able to provide a full report of the spectacle of fire, sparks and pierced metal this year.
For anyone who remembers the wonderful Battlebots TV show from 10 years ago, the main event is very familiar: two competitors face off with the remote-controlled extensions of themselves in a Lexan enclosed arena. The resulting battle is an orgy of flames sparks and mortally wounded robots. Yes, there are a ton of wedge robots, but most of them had very interesting weapon designs.
Off the main stage, there are also more traditional robotics competitions. Sumo robots try to push each other out of a ring, robot soccer tries to demonstrate a mechanistic Pelé, and foot-tall MechWarriors battle in the streets of a miniaturized city.
There were also a lot of not-really-battling robots like a robotic foosball table. It sounds like everyone had a blast, so we might be hitting up the bay area this time next year.
Surely, this is a glimpse into the future. No? Ok, its a glimpse into 1983. A small chinese fast-food restaurant in California put two 4.5 foot tall, 180 pound robots to work delivering food. Tanbo R-1 and Tanbo R-2 were their names and delivering food was their game. At least, when there wasn’t radio interference or their batteries were running low. They were built to deliver food to the tables and be polite to the customers. They also had some interesting quirky behavior, like responding “that’s not my problem” and dancing off to some disco music if they didn’t understand you. Do yourself a favor and go read some of the stories. We wish we could have seen them in action, they sound fantastically absurd.
[Kevin] wrote in to tell us about the robotics development platform he’s been working on for the last few years. He calls his device the DyIO, and looks like an extremely easy way to get a robot up and running quickly.
Because the DyIO stands for Dynamic Input & Output, [Kevin] thought it was important to put 24 separate IO pins in his build. These pins can serve as 24 digital inputs or outputs, a few analog inputs and PWM outs, or even DC motor controls.
What’s really interesting is the SDK that [Kevin] and his team chose to build. With this SDK, you can program the DyIO in Java or just about any other language you would want. Already, [Kevin] and his team have built a few interesting projects around the DyIO, like a hexapod robot and animatronic pokemon. While we’re sure something awesome beyond imagination is waiting to be built with the DyIO platform, you can check out these already-completed builds after the break.
Continue reading “DyIO is a huge robotics development board”