“Smart” Car

“Smart” Car

This is my entry into the NXT Car Building Challenge!
Steering
The steering mechanism is based of the “racecar” off of NXT programs. There is also an ultrasonic sensor on it (as you can see to the left). The ultrasonic sensor is always facing the direction of where it is going making it more useful in programming than just having one that faces straight.
Drive wheels
The back drive wheels are geared 3:1 so on smooth ground it works great but on rough ground and carpet it does not work so well. You can also gear it 1:1 (with gears not included in NXT 2.0) and 1:3 (by switching the gears).
Program
The Program is for use with the PSP-Nx-v3 from mindsensors. It is remote-controlled using a joystick. the ultrasonic is used to slow the robot down whenever it is driving forward towards an object. That way it is easier to avoid objects. The color sensor is red when it is close to something and green when it is far away from something.

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video: iPod

Thanks to musikConomy for intro/exit music

Robowaiter Update

A quick update on my work from the Robowaiter competition.

I’ve setup two testing areas, first on the deck with a carpet but the carpet made the turning unreliable so i was not able to test the turns well. Then i set it up the in the kitchen and i got it to work after playing with it. The only downside with the setup in the kitchen is that it has to come down once i’m finished testing and it only shows the two table placement and 1 wall – does not show sink or dolls. I have gotten it to go home and work a bit better than shown in the video.

Thanks to musikConomy for intro music