Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: jianle on March 11, 2007, 09:47:15 AM

Title: Robot to climb walls?
Post by: jianle on March 11, 2007, 09:47:15 AM

Hi I need help for a uni project. I need to make a robot/vehicle that moves straight for 4.8metres and climbs up 2 6.5cm high and 4.2cm thick walls.

I have little knowledge on these stuff so please give some suggestions. Thanks

Title: Re: Robot to climb walls?
Post by: ed1380 on March 11, 2007, 11:07:29 AM

Like this? http://www.societyofrobots.com/robot_asme.shtml

Title: Re: Robot to climb walls?
Post by: jianle on March 12, 2007, 05:14:15 AM

yea.. but mine can't be RC-ed and actually it has to carry and deposit stuff too but the only trouble I'm facing with is the going straight and up the walls part. *sighs*

Title: Re: Robot to climb walls?
Post by: JonHylands on March 12, 2007, 06:17:15 AM

Well, that robot that Admin built probably could be autonomous with the right on-board electronics.

Going in a straight line was discussed in a thread here a couple weeks ago. The only real issue with climbing the walls with a design like that is having the robot align itself with the wall. Seems to me a couple good analog distance sensors (like the Sharp GP2D12) mounted on each side of the robot, facing forwards, would help in aligning the robot with a wall.

- Jon

Title: Re: Robot to climb walls?
Post by: Admin on March 16, 2007, 04:41:53 PM

Quote

The only real issue with climbing the walls with a design like that is having the robot align itself with the wall.

To an extent I found the robot almost self aligning itself to the wall - it wouldnt climb until both front wheels contacted the wall. So with the sharp IR that JonHylands mentioned that shouldnt be too hard.

I actually found the hardest part going back down the wall. If I wasnt careful driving it, the robot would flip over when it went over the other side. The first prototype often flipped because of a poor design and my not-yet-practiced driving skills.

I guess the point of this is, try to design it so it has passive mechanical stability (wide base with weight kept low to the ground).