Designs

PLEASE! help me think up some
flipper designs using a servo

thanks

u can make a lifter with a servo not a flipper

be more specific please

http://www.teambeligerant.cjb.netwww.teambeligerant.cjb.net - go to useful technical information, then click on Flippers. Hopefully this will be of some help.

thanks,
I appreciate your help Gary

Jono

Actually you can make a flipper from a servo. I have never finised a complete Ant but I did have the flipper mechanism working. Basically the servo acted like a lifter but the arm was sprung loaded and was held in place by a catch. The servo would try to lift the arm which bent the spring against the catch until the pressure finally overcame the catch and the arm shot up. It actually started as an axe which worked well on the bench but when put into an Ant chassis the ant performed a back flip every time the axe was fired.

Is there anyone who has seen the Swedish robot EntrAnt?

yep seen it fought it and beat it, but its a damn good robot quick with a superb flipper

yeh thats got a superb servo flipper
heard lots about that

could someone please enlighten me a bit more about Entrant as ive never heard of this bot

Thankyou

Craig, that was the old EntrAnt and it was nothing like the new improve one.

Jono, they have a website, but thats mostly in Swedish.

http://www.bovik.homeip.net/robot/default.htmhttp://www.bovik.homeip.net/robot/default.htm

Entrant is fantastic stunning electronics inside glad you guys got best engineered at AWS13 for vacuum that was fairly impressive, future champs

Yeah.....to bad that that he lost vs Resurrected...if they had a roof on the robot they could have wone the competion.....

Ehm, Craig, I got the award for best technical engineering, Vacuum was awarded with the most original design.

Gary, I looked att your tech page, but I dont get how I should mount all the things on the flipper arm...

And is glassfiber god as amour?

Hi Joacim
The flipper arm is yellow, the servo arm is green. The flipper is hinged to the robots body at point D.
The linkage between the servo and flipper (red) must be free to move at both ends. The linkage could be piano wire or a recycled paper clip, with a bend in the end so it fits in a hole in the flipper.
Unfortunately I dont have any pictures of the linkage on R.O.N.N.Y or RampAnt. If I ever figure out how to take a good picture of the linkage (its hard to see when the robot is complete) I will add some to my site.

Glassfibre is certainly light and is fairly strong, but its main benefit is that it can be moulded. If you can make a shape that will deflect the impact from spinners then you may have an advantage. Carbon fibre is lighter and has been used to good effect. Kevlar hasnt been tried yet AFAIK...

thanks, but was makes the diffrens between having the servo direckt to the arm or having the link?

Its all about getting the right leverage ratios with the flipper and getting the servo lower for a better Centre of Gravity :)

Also, the link allows the flipper to be hinged to the robot body. With a direct connection to the servo, the only place the flipper is connected to the body is via the servo output gear.
The link is also the weakest part, so it breaks first. With the direct connection the weakest part would probably be part of the servo. We have suffered lots of flipper damage, but never any servo damage. (And I know which Id rather replace!)

Is´nt it esyer to modify the servo to 360 degrees?

I write that abot 3 month ago, and still no answer.......

Atm is Flippt in parts, but when I weight in everything, it seems its gonna weight only 125 g!
What can I do to make it a bit heavier, or is it a advantage to have it lighter then normal?

More armour! :)

Rebuild flippt first, there will be something you have missed out (glue/tape). Then improve armour but leave room for a bigger flipper servo or a higher voltage battery. So if there is still weight remains there is room to improve rather than having to rebuild a bigger shell that weighs more.