About a month ago we presented R J McNamara's attempt to build an Omni-wheeled Bot, what that robot was lacking was the Rotacaster Omni-wheels cause the Rotacaster wheels did not existed in Lego Technics format.
Now this is changed and a new robot R J made, is equiped with 4 sets of the new wheels allowing it to move and manuever in any direction smoothly that you forget the 4x Ultrasonic Sensors to aid in navigation.
For more info here is the place to look.
222Doc after building the first Lego biped to climb steps now decided to try something harder.
He builded a Quadra-ped from Lego parts that it is able to climb ladders both in vertical and horizontal orientation.
With a total of 12 motors, 8 for articulations and 4 for gripers its sure alot of work to syncronize and program everything and as the maker says its the hardest thing he's done so far.
The result worth the pain though since "Sloth" seems to climb with ease the test ladder and carry its weight around.
Another first for 222Doc since we're unaware of something similar.
Alexandre Dubus after building a fantastic tricopter, decided to keep the original chassis and add some Nintendo Wii console gyroscopes. Combined with an Arduino ProMini and a 6DOF IMU made from Nintendo Wii MotionPlus and Nunchuk.
The result is a perfect, stable flight as you can see in the video from the onboard camera that has almost no vibrations even if it is just cable staped without any vibration dampeners.
The whole documentation complete with schematics and more pics can be found here for the tricopter and here for the TriWiiCopter.
blogger45 using an Arduino,a couple of servos and a webcam made a balancing plate for a ping pong ball.
With basic control loop with discrete PID and no anti-windup he managed to have 15% overshoot and a 2% steady state error, the settling time is 2 secs on a framerate of 30fpr from camera.
You can watch more videos here.
About a month ago we presented 222Doc's work on making the first Lego biped to climb steps, now the maker moves a step forward the whole project and the X2 is able to climb up and down also.
The movement speed is up to 5x faster than the first X2 and the climbing down is smooth and steady. The best part is that 222Doc is working in arms and body for the X2 that will make it capable to climb ladders and be able to grab things, so stay tuned.
This is the next module for the Instant Greek style coffee robot (AKA Frappé) that i am making right now. This module is responsible for measuring and putting the proper amount of sugar and coffee. I use a worm shaft to push the material, and a stepper motor to control the rota...
hg5bsd build a rather interesting mix of a hexapod structure but with tripod kinematic with 3 x 2 stepper motors. The mechanics are kept simple consisting of M6 threaded shaft, RC modell universal joints and magnet ball joints, the software controlling the 6 motors is the EMC2 giving the bot a respected accuracy of ~0.1mm.
A very nice concept expressed in a very nice robot, what more to ask?
Andreas made a fantastic WALL-E transformable self controlled robot from Lego bricks which uses Mindstorms programming environment. As you can see in the video (apart the love story) the robot is transforming as the original one and can also move in both modes. The tracks transformation is trully amazing and even though the mechanism is not seen it must be really tough to put all that staff inside but this bot does the trick!
As far as i know and as the maker states this must be the first of its kind so enjoy it, for more pictures you can also check here.
Thanos Kodoyiannis made this motion simulator based on the old manual operated motion cockpit, the Joyrider for which plans can be found here.
The result (as you can see in the video below) is a very precise motion simulator that can be used with flight or driving simulators as well.
Except the cockpit plans you can find detailed instructions of the build stages and the various parts need...