robot

1018 Articles

Simple Servo Bot Plans

November 22, 2008 by 6 Comments

had_arduino_servo

oomlout has posted some interesting plans for a simple robot. It’s based around an Arduino and is a platform similar to the Parallax Boe-Bot. The Arduino sends PWM signals to continuos rotation servos that drive the two main wheels. All of the structural components are laser cut from acrylic with slots to hold standard hex nuts. It’s an interesting technique, but the design has a lot of potential for improvement. Right now it uses two different power supplies and a breadboard for simple connections. From the video below, you can see that the balance could be improved as well. Continue reading “Simple Servo Bot Plans” →

Guardian Hack Day

November 18, 2008 by 1 Comment

[vimeo http://vimeo.com/2276648%5D

The Guardian’s technology department hosted its first Hack Day last Thursday. Developers were freed from the drudgery of their everyday jobs to make fun toys and tools. Many of the hacks that developed played around with the website, like the Guardian commenter blocker, or the Guardian Button integrated into the Google Toolbar. We liked the Guardian Politics Page LED Swingometer, created by [Tom Armitage], which scanned the Guardian’s politics RSS feed for mentions of “Conservative” or “Labour” to yield the “swing” of a page to an Arduino. We wanted to see more of the Java-enabled Robot Dude. You can track Fhe Guardian’s Hack Day activity on Twitter with the tag #ghack1 or check out their photos on Flickr.

If you want to participate in a Hack Day, Last.fm is hosting one this December.

Autonomous Cookie Monster

November 10, 2008 by 8 Comments

cookie_monster

[DJ Sures], who built the autonomous Wall-E, is back with another creation. His new autonomous Cookie Monster is certainly an interesting build. He had the cookie monster plush toy already so the first step was to flay the blue beast and insert a skeleton. He used another robot for that. There are two servos for the wheels plus one for each arm and one for the neck. There’s a distance sensor in the mouth. He built a custom board for the PIC18F4685 microcontroller which is running the same 2D mapping code as his previous bot. Check out the video of it in action below. Continue reading “Autonomous Cookie Monster” →

Robot Fish CAD Models

November 2, 2008 by 4 Comments


[Bre] dug up this excellent robot fish prototype project. The PPF-O9 has three servos. One on the forward fins to control depth, one on the middle joint, and one final one drives the tail fin. The battery box is mounted to the underside. The control scheme is interesting: the right stick controls left/right and up/down while the left stick controls the frequency and amplitude of the motion. They say the robot is fairly stable, but swimming and turning can be slow. They’ve included CAD files for almost every component to help you with your own designs.

In June, we highlighted a robofish designed for swarm communication.

Six Legged Crawler

November 1, 2008 by 6 Comments

This hexapod was sent to us on the tipline from [Jamie]. If you want to take the six-legged robot a bit farther than our earlier posts, here and here, this is the hexapod for you. The structural pieces were modeled, and cut out of 3mm thick plywood using CNC. He used TO-220 transistor nylon isolation mounts for the bearings, and bolts and locknuts at each joints. The main body houses eight servos, six for the legs and two for a camera head pan and tilt. There are another six servos, one for each leg, to lift the feet. The whole thing is controlled by an Atmel AT90S8515 clocked at 8 Mhz. The code was compiled using WinAVR free GCC GNU-C. He uses a PlayStation controller to help debug the walk cycles, and change parameters as needed. Watch a video after the jump.
Continue reading “Six Legged Crawler” →