Author Topic: servo modification(again)  (Read 4086 times)

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Offline monkey_chowTopic starter

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servo modification(again)
« on: May 20, 2008, 05:47:58 AM »
hi,
 
I'm trying to modify my first servo, yay!

The gears are metal, and the thing that stops it from turning all the way when its assembled is a metal pin that im having trouble egtting out.

I cant figure out how to get the gear off to access the pot, or if the pot is part of the gear...im kinda new at this.

help much appreciated.

Thanks.

pics are below, not very clear but I'm hoping you can recognise the gear types or something and tell me what I should do.

Thanks again.


« Last Edit: May 20, 2008, 09:26:11 AM by monkey_chow »

Offline jka

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Re: servo modification(again)
« Reply #1 on: May 20, 2008, 08:18:48 AM »
You don't mention which servo it is, but with all servos I have seen, you can take the top off to access the gears and the bottom to access the electronics.

The thing that stops it, is it the small "pin" on the leftside of the gear in the first pic? What stops it? something in the top cover? If it is, it's probably plastic, and you might be able to remove that part, insted of the small pin.

Offline monkey_chowTopic starter

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Re: servo modification(again)
« Reply #2 on: May 20, 2008, 08:58:37 AM »
hey again,

I got the large gear off and excuse the aboslute simplicity of my question but what exactly is the pot? What im seeing isnt exactly whats shown in the servo modification tute.

Heres another terrible quality pic, i tried to write on it to explain what im seeing. and heres the servo type(url):

http://www1.jaycar.com.au/productView.asp?ID=YM2763&CATID=&keywords=2763&SPECIAL=&form=KEYWORD&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=



If someone could tell me what to do next it would be much appreciated. I hope im not sounding like i wanna be spoon fed, i just dont get this part. Thanks.
« Last Edit: May 20, 2008, 09:23:26 AM by monkey_chow »

Offline jka

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Re: servo modification(again)
« Reply #3 on: May 20, 2008, 01:52:08 PM »
Take a look at this page: http://www.uoguelph.ca/~antoon/gadgets/servos/servomod.html Here you can see pictures for all steps for modifying a servo, including removing the bottom cover and the potmeter.

Offline monkey_chowTopic starter

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Re: servo modification(again)
« Reply #4 on: May 22, 2008, 12:00:27 AM »
thanks jka that was helpful.

I read a few different ways to do this from what i understand I wanna disable the potentiometer right? some say to remove it, some say replace it with resistors, or superglue it,

I put a picture below, can someone tell me if this is right before I do anything drastic: I desolder points 1a,1b, and 1c and remove the pot(2[green writing]) completey, would that work?

Or can I just superglue the jutting part of the pot so it doesnt move?

if i remove the pot, do i need to connect points 1a, 1b, and 1c with alternative wiring/component(i.e resistors)?


Offline jka

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Re: servo modification(again)
« Reply #5 on: May 22, 2008, 02:14:45 AM »
If you just glue it, the servo will still try to move it and either break the glue or itself. Follow the guide on the link I posted. There is another guide here: http://letsmakerobots.com/node/259 you can read too. Both of them replace the pot with two resistors.


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