That would be hard to do. A BRAT is the closest you can get to 8 to 16 servos and the more you add to it I think it would become less stable without enough DOF to shif it’s CG - (Center Of Gravity). If you are talking regular sized bipeds like the Robo One style, the two legs alone use 10 servos, that leaves only six for the arms & head. Arms need at least two servos per limb if you want it to move in two directions, that’s another 4 servos. One servo for the head and one left over as an extra.
It’s possible to make a low DOF biped I guess but making it walk would be hard without a way to shift the weight properly.
Eh. That’s the nice thing about the SES system - you can play with it and experiment with different forms.
I’ve got plans for upping my BRAT to 8 and then 10 axes, but haven’t yet been able to convince myself to buy the brackets and servos to do it.
I’m just not all that jazzed with walking as a means of robotic locomotion. Because of this, I usually have other projects that take priority when it comes time to purchase project parts.
I was stuck making board after board when I was building my sensor board project.
I am going to try to build up my brat to see how it works. If it gets to heavy or what ever, I still can use the parts for other projects. Gota love the SES concept! 8)
Looking at the leg geometry, I assume that you’re stepping by shifting the weight onto one foot and then rotating the hips? As it looks like that would rotate the entire body with it as well, I can see how the name “gimpy” might apply. I like the fact that it can turn without resorting to foot-slide though.
Looks good - I’ll second the request for video of this bot in action.
It will take me awhile to get a video together and I will post it when I have it done.
And yes Seamus he does walk by shifting the weight to either side and lifting the opposite foot then rotating the down facing hip shafts.
The more I fine tune with SEQ the better the walk. As you can see he can strike some really neat poses and I do more playing with it than actually refining the walk but now that I’ve settled with this version of " Gimpy " I’m going to focus on some good sequences and a wireless bot-board.
I’m glad I could share the pics ( finally ) with everyone and I can’t say enough praises about the wealth of information that I find posted on this site.
You did an awesome job! Another prime example of the flexibility of the SES brackets. I was looking at your pictures and marveling and the clever configuration, I am truly impressed!
Did you have to modify the biped PETE torso?
Great design, and it’s one you can call your very own!
Very cool biped! Do you have any videos too?