UGradHandyLego

HomePage | RecentChanges | Preferences |

UGradHandyLegoBot

This page describes the progress of the possibly named UGradHandyLego Bot. As we now are no longer just undergraduates working on this, perhaps we should correct the name to Handy Lego Bot (HLB) 

----

The platform for this robot is a custom built Frego(Fred's Lego) platform cut from 1/4" acrylic. We plan to incorportate all of the logic contained within a brain of this size:

Corel Draw file: http://www.cs.uml.edu/~mpenta/91.548/UGradHandyLego/UnderGrad/Fredgo3.cdr The Handy board sits in the middle of the Frego platform and is securely held in place with reinforcing straps. This Frego platform allows us to leverage the many sensors in the lab that are already mounted with Lego pieces. However, the motors require something more substanial.

The motors are mounted beneath the board using a separate plate which is attached with 1/4" spacers to the Frego plate using screws. The lower plate has two brackets for each motor. The front bracket secures the motor in position and is attached to the lower plate with epoxy. In addition, the back bracket supports the weight of the motor and prevents it from twisting off the front bracket. The back bracket is secured with cotter pins and is easily removable to swap motors when the need arises. The entire motor mount is removable which allows the robot to be reconfigured with different motors. (Perhaps ones with quadrature encoders, or maybe laser guided rockets)

Photos of the motor mount are forthcoming. Corel Draw Motor Mount file: http://www.cs.uml.edu/~mpenta/91.548/UGradHandyLego/UnderGrad/UnderGradMount.cdr

The wheels are carved out of acrylic and fit the shaft of the motors exactly. In manufacturing the motors, we discovered that they didn't fit the shaft correctly and determined that this was due to the platten not being level. Cleaning the beneath the laser bed improved the situation, althought we still can't cut wheels that are suitable for our purposes.

Corel Draw Wheel file: http://www.cs.uml.edu/~mpenta/91.548/UGradHandyLego/UnderGrad/Wheel.cdr

==Contributers== (I'm sorry I don't know everyone's name yet. Once everyone is listed here we can remove this notice.)