How about a one servo (or one motor) only mobile robot? I have a concept I'll be trying soon. Inviting others to start thinking and building.
It's a no-brainer to do a wheeled robot doing J-turns: a continuous rotation servo or motor drives robot forward in one direction, and spins robot in the other direction. So the bot either goes straight or turns in one direction. But I'm thinking of a bipedal weight shifting walker. Maybe limper. Will see.
If I add a requirement that it's gotta do a figure 8, then the J-turn bot is mostly out, unless the mechanism only selects curve left and curve right. That's cheating.in my book. So it has to be able to drive straight too.
Anyone else game? Start thinking, Duane, Martin_H, Amanda, Gareth, Whit, Rick, Rich, Matt_G, Nikos and everyone else! ( I know I forgot some people...)
Let this 3-servo bot inspire you: https://www.youtube.com/watch?v=ej1_BWnmpgg
That music is second only to Cliff Richard's "Congratulations"!
"When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."
- Pablo Picasso