Thursday, March 9

ITS ALIVE, RAT ROBOT POWER UP


sprocket2cog
2d-monic
So, the photos are up at flicka and the RAT (rubbish and trash) robot is working but needs some new wheels and sensors now. The design (tripod holomonic ) works well and is stronger then First thought, cardboard tubing with fibreglass supports and plastic tape wrapping strengthing it. Hot glue is used to hold it all together with tape added as protective covering on the carboard.
The cds are gluded to the core and legs and the motors are supported by fibreglass rods and hot glue. Control is rcx and power is 9 volt motors in the feet. New wheels are being made and ill do a video at toutube when they are done. The cover is made from a car window sun shade to give it a lunar lander module look.
Ill be improving this one over time and hope to make it a full line tracker and soccer style robot with sensors to suit and some decent programming.
Ive called it 2D monic from Direct Drive holoMonic robot chassis as the motors are mounted in the feet of the robot this could work with direct drive motors instead of lego motors if brushless high torque motors are used , but an ultra fast controll system with heading sensors an compass if not a gyro or two would be needed for any real control at increased speeds, this one can go around 30-40 cm a sec at full speed on a flat surface, but the dynamics of the design mean repeated directional changes are needed as the robot tends to degrade in to a static point spin and linear motion paths cease untill a new slingshot is set off by changing one or wheel directions.

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