A motion-tracking eye, derived from http://code.google.com/p/theeyestheeyes/, on a walking chassis.
Here"s the second test run, using parts designed in CamBam:
http://www.cambam.co.uk/
and cut from 3 and 6mm acetal sheet:
height=344 />
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000986s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.064006s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001009s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001179s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000968s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003160s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000781s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003639s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014982s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001124s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 237262 [ RunTime:0.033062s ]