Minibot falls slowly?
 

http://www.youtube.com/watch?v=N96VeZedEec

A video is worth a thousand pictures, thus worth a million words :D

Re: Minibot falls slowly?
 

you short the motors :p

Re: Minibot falls slowly?
 

Care to expound? Would be appreciated.

Thanx,

David

Re: Minibot falls slowly?
 

Maybe you could put some sort of ratcheting mechanism in there. http://www.vexrobotics.com/276-1546.html might be a good option.

-vivek

Re: Minibot falls slowly?
 

Thought of something like that. Didn't want to stop it hard enought to make the bot fall off the pole though (kinda would defeat the purpose :) ).

David

Re: Minibot falls slowly?
 

http://www.youtube.com/watch?v=a6EKw0RInRw

Our team's minibot does a very similar thing on purpose at about 1:48 in the video above.

Re: Minibot falls slowly?
 

Ours is built differently, but could you explain how you got the motors to slowly roll? Ours prefers to zoom down.

Thanx,

David

Re: Minibot falls slowly?
 

Ours also always comes down. Shorted the motors in series off the "normally open" on the limit switch.

http://www.frc272.com/2011Season/Min..._timed_run.wmv

I like this one the best. Hicups a little in the beginning before grabing. If 4.48 is a slow run for us I will take it.

David what is your gear ratio?????

Re: Minibot falls slowly?
 

Am I supposed to know my gear ratio :eek: ? To be honest, I actually don't know all of that. I just built it :) . It uses the largest tetrix gears in the FTC mini kit, and they go to the smallest gears mounted on the wheels.

Thanx,

David

Re: Minibot falls slowly?
 

Okay based on that.....I am assuming you are using either a limit switch or household light swtich to start/stop your minibot when it hits the top. Take whatever side you have left either normally open/normally closed output (depends on your design) and short that across your motors in series and you will get something similar to our result