Society of Robots - Robot Forum

General Misc => Misc => Topic started by: Joesavage1 on February 03, 2009, 09:53:42 AM

Title: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Joesavage1 on February 03, 2009, 09:53:42 AM
i JUST OPENED THE SERVOS CAUSE I FIGURED THAT WAS TO DO BEFORE THE START OF THE ELECTRONICS BIT BUT IT ISNT CAUSE THERE IS NO WHERE TO PUT THE MICROCONTROLLER STRAIGHT INTO THE SERVO TO MAKE IT 0 DEGREES. ANYWAY ALL THE GEARS JUST FELL OFF AND I GOT HORRIBLE GREASE OR SOMTHING ON MY HANDS AND I DONNO WHERE THE GEARS GO BACK.

PLEASE REPLY SOON!

JOE
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Trumpkin on February 03, 2009, 10:00:13 AM
There are some good pictures of the gears here http://www.google.com/imgres?imgurl=http://www.ge.uiuc.edu/s-burns/HS311hack/images/IMG_1279.jpg&imgrefurl=http://www.ge.uiuc.edu/s-burns/HS311hack/&h=376&w=598&sz=25&tbnid=yMOgq4DMmBdxsM::&tbnh=85&tbnw=135&prev=/images%3Fq%3Dhs%2B311%2Bgear%2Bpicture&hl=en&usg=__gUI-kvVtaLJTVsQyc1oa0ymZxfk=&sa=X&oi=image_result&resnum=2&ct=image&cd=1
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Joesavage1 on February 03, 2009, 10:04:47 AM
ok thanks, now the gears are back in position, is there any way to modify servos before the electronics part of the $50 project?

Thanks

Joe
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Joesavage1 on February 03, 2009, 10:11:28 AM
Also what does it mean by rotate until the gears stop moving, (just for future referance)

Joe
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Joesavage1 on February 03, 2009, 10:18:25 AM
now it can barley rotate 90 degrees (i put the gears back together agian) PLEASE HELP!?! (BTW SOZ FOR ALL THIS IM JUST in a PANIC)

JOE
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Joesavage1 on February 03, 2009, 10:53:19 AM
Also why do you have to glue the pot head down instead of just removing the mechanical stop?
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Razor Concepts on February 03, 2009, 11:01:29 AM
The stopper prevents the gears from mechanically rotating too far. The pot electronically tells the servo what position it is at. So even if you only remove the stopper, the servo will not rotate continuously because it will stop at the location you tell it to. Gluing the pot down tricks the servo, thinking it is stationary so that it will move.
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Joesavage1 on February 04, 2009, 10:11:04 AM
Ok i got a couple of questions.

1) But the main gear fits onto the pot head, if i glue it down surley it wont move so the servos are pointless?

2)Here:   http://www.societyofrobots.com/step_by_step_robot_step2.shtml (http://www.societyofrobots.com/step_by_step_robot_step2.shtml) It says that you should modify the servos first, how do i connect the microcontroller to the servos without building the rest of the robot?


Thanks

Joe
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: jediryan123 on February 05, 2009, 05:07:33 AM
dude don't worry about the micro controller just turn the pot head until you here the motor stop spinning and then glue it in place, then just remove the mechanical stop or use a box knife to saw it off it is glued in (don't chop your fingers off)
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Razor Concepts on February 05, 2009, 07:00:45 AM
Just finish the circuit and then finish modifying the servo. It won't change anything  ;)
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: Joesavage1 on February 05, 2009, 09:07:19 AM
Quote
1) But the main gear fits onto the pot head, if i glue it down surley it wont move so the servos are pointless?

Can anyone anwser this?
Title: Re: OMG PLEASE HELP SERVO'S NOW!1!!
Post by: TrickyNekro on February 05, 2009, 09:26:33 AM
The gear fit's to a metal bearing round the pot... You chop the pot head off and then you glue the pot....
You chop the head do the gear doesn't come in contact with the pot....