Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: deivs001 on May 14, 2008, 12:32:23 PM

Title: 50$ project
Post by: deivs001 on May 14, 2008, 12:32:23 PM

Hi all!
My question is:
can i replace HS-311 with SG5010 Ball Bearings Servo (http://cgi.ebay.com/High-Speed-Ball-Bearing-Servo-SG5010-RC-Futaba-JR-AU_W0QQitemZ320249853887QQihZ011QQcategoryZ34056QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#ShippingPayment)

Title: Re: 50$ project
Post by: Rebelgium on May 14, 2008, 02:31:32 PM

Yes you can.
But always be carefull with asian ebayers... :/

Title: Re: 50$ project
Post by: deivs001 on May 14, 2008, 02:38:52 PM

 ;)
And with what I can replace those CdS Photoresistors if I want to make line follower.  I have in mind these: http://darisusgmbh.de/shop/product_info.php?products_id=12960

Title: Re: 50$ project
Post by: bukowski on May 14, 2008, 09:06:22 PM

Hey, believe it or not, these are the same servos I used on the $50 bot.
No complaints (suprising), but I do have some pointers when it comes to modding them:
They have metal gears, and a metal pin to stop rotation. it is a mother to take out, but after some time with some needle nose and some elbow grease, they pop right out.
Also, the ball bearing inside the main gear is holding in the plastic piece that turns the pot. I couldnt get either out (the plastic piece or the bearing... looking back on it Im glad I didnt get the bearing out - would never have gotten it back in), so on the first one I melted out the plastic part with a soldering iron.  I realized this was stupid and messy and on the second I just clipped off the pot head with a pair of wire cutters and glued the rest in place.

Title: Re: 50$ project
Post by: superchiku on May 14, 2008, 10:00:02 PM

replace it with ir or camera

Title: Re: 50$ project
Post by: deivs001 on May 15, 2008, 01:28:51 PM

These are things what i have ordered:
1 x   220uF 25V 105C 8x11.5 RG SAMWHA
1 x   8bit AVR MCU 5V 8K FLASH 16MHz SDIP28
1 x   CERAMIC 0.1uF 50V RM5 Z5U 0.1 1 2 10
1 x   Grid-Style PC Board 100x100mm
1 x   36 position breakaway male header
1 x   Green LED
1 x   POS V-REG 5V 1.5A 4%
1 x    28 pin DIP socket
5 x   340ohm resistor
5 x   1.62Kohm resistor
5 x   Photoresistor (ldr) 2-20k
2 x   High Speed Ball Bearing Servo SG5010 RC Futaba JR AU

I think it's all what needed to build 50$ robot. Can you confirm that?

Title: Re: 50$ project
Post by: Private Reid on May 16, 2008, 06:23:23 PM

Yaah

thanks alot all!!!!!

you just fixed my servo problem!!!!

i was going to have to spend $60 on 4 servo's and then $20 postage, but these are perfect!!!

WOOOOOOOOOOOOOOOOO         ;D ;D ;D ;D ;D ;D :D :D :D :D :D ::)

Title: Re: 50$ project
Post by: Admin on May 17, 2008, 04:52:23 PM

Quote

They have metal gears, and a metal pin to stop rotation. it is a mother to take out, but after some time with some needle nose and some elbow grease, they pop right out.

Put the gear in a vice, then get a thin metel needle or screwdriver and hit it with a hammer to knock out the pin.