Society of Robots - Robot Forum

General Misc => Robot Videos => Topic started by: Admin on May 31, 2008, 02:13:45 PM

Title: MOBOT 2003 and 2006 videos
Post by: Admin on May 31, 2008, 02:13:45 PM

This was my very second robot, named Pikachu, that I entered into MOBOT 2003. The video starts off showing what it looks like, followed by a big Pikachu thing on top of it as it goes down the course.

Pikachu used a CMUcam and a Cerebellum (PIC16F877) microcontroller.

The reason it failed on the hills was mainly a result of having poor speed control. Plus, I sucked at making robots back in 2003 . . .

[youtube]yYvNmcruMHo[/youtube]


This is Hex, the first hexapod robot to attempt the MOBOT course.

It was built by my friends Pras and Rich, and uses my CMUcam code from my Pikachu robot.

[youtube]NYPlhHtfYRM[/youtube]


This is Pikachu IV, a simple photoresistor line follower robot that I entered into MOBOT 2006 at CMU.

Its fully documented here with source code:
http://www.societyofrobots.com/robot_pikachu4_mobot_2006.shtml

[youtube]NcqrWFTT90Q[/youtube]

Title: Re: MOBOT 2003 and 2006 videos
Post by: pomprocker on May 31, 2008, 02:44:57 PM

How did you mount the standoffs to the sides of that thick hdpe on pikachu IV?

I bought the metal standoffs from radio shack and the screws are too short to mount to 1/4" thick hdpe.

http://www.radioshack.com/product/index.jsp?productId=2102848&cp=&sr=1&origkw=standoff&kw=standoff&parentPage=search (http://www.radioshack.com/product/index.jsp?productId=2102848&cp=&sr=1&origkw=standoff&kw=standoff&parentPage=search)

obvious thought was to get longer screws, but going to hardware stores, I have been unable to find ones that fit.

Title: Re: MOBOT 2003 and 2006 videos
Post by: Admin on May 31, 2008, 04:25:37 PM

I simply drilled holes into the plastic, and then screwed the spacers into the holes.

The holes were drilled to I think .106" diameter, and the 4-40 spacers (1/4" long screw) I used were more like .116". It self-threaded really easily.

Title: Re: MOBOT 2003 and 2006 videos
Post by: pomprocker on May 31, 2008, 05:03:25 PM

i'm confused....

My standoffs have short screws at both ends.

Are yours not like that?

Title: Re: MOBOT 2003 and 2006 videos
Post by: Admin on May 31, 2008, 05:16:13 PM

Mine looks like this. The bottom has a screw coming out. The top has a threaded hole so that I can put a screw into it.

(http://www.societyofrobots.com/axon/images/axon_spacers.JPG)

Title: Re: MOBOT 2003 and 2006 videos
Post by: pomprocker on May 31, 2008, 05:19:23 PM

ahhhh its all clear to me now. Yeah I just saw some of those on sparkfun.

http://www.sparkfun.com/commerce/product_info.php?products_id=126 (http://www.sparkfun.com/commerce/product_info.php?products_id=126)



LOL, I can't believe I hadn't thought of getting different standoffs before.