Been a busy roboteer today, I now have a working four bar mechanism Limit switch in the down position is working well, needs a slight adjustment.

I attempted to self right to see if it would, it failed the first time and then the MDF gave way and it had a bit of a rear end prolapse :S

Going to try making the rear bars longer to see if this will facilitate self righting.

But apart from that it seems to work well, here's a couple of videos of it topless (!), having a little run around.





And some photos:



The tape is a substitute for welding just to hold things together for the time being.