hi. this will be a walker, a photovore one. it will use a motor in the middle to change directions. it will have a beam head to seek the light.
That particular bot in the picture you posted is by Chiu-Yuan Fang. It's his Walker Ver3.0
Might want to dig round his site a bit if you are building a microcore walker, his 3 motor & the 'miller' walker are quite capable for being so simple. I believe there are some videos for it. There are better beam walker circuits around though. I know of a nice phototropic 2 motor walker circuit that wilf posted years ago that is quite adept. Have you decided on a particular circuit yet?
its on building progress. waitin for my parts and tru, thats not my pic. its from google.
From the looks of it... I guess I'll have to play "Bad Cop"... hence quoting from http://letsmakerobots.com/lmr/rules
Now get to work so you can make this a valid post... :-)
lol. chek my prev. bot. im remaking it...