Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: Borot on February 07, 2010, 05:38:35 AM

Title: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: Borot on February 07, 2010, 05:38:35 AM
I have come across this little servo, Power HD Micro Analog Servo HD-1900A.
at this site, http://www.robotgear.com.au/Product.aspx/Details/375. (http://www.robotgear.com.au/Product.aspx/Details/375.)

Is this a suitable alternative to the hs-311 for the 50 dollar photovore robot upgrade, as it's cheap to buy here in Australia.
cheers

Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: gaurav.p on February 07, 2010, 06:04:52 AM
post the link again,it isn't working ::)

"The page cannot be found"

-gaurav
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: Soeren on February 07, 2010, 06:10:24 PM
Hi,

post the link again,it isn't working ::)

"The page cannot be found"
Just remove the trailing period in the URL to get this (http://www.robotgear.com.au/Product.aspx/Details/375).
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: z.s.tar.gz on February 07, 2010, 06:13:11 PM
The IR sensor isn't a lot of weight to move, so almost any servo that you can mount it to will work. (Within reason of course)
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: Razor Concepts on February 07, 2010, 06:35:50 PM
That is a micro servo.. it will struggle under load. Get a standard sized servo.
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: z.s.tar.gz on February 07, 2010, 07:46:51 PM
That is a micro servo.. it will struggle under load. Get a standard sized servo.

There's no way micro servers can't move around two ounces of plastic that's only like an inch long.
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: Razor Concepts on February 07, 2010, 09:35:12 PM
I'm assuming that those are for the drive wheels? Can't really be sure, there really is no photovore upgrade because it is a photovore to begin with. For drive wheels micro servos won't be enough, but for an IR rangefinder (if that was what he meant) it should be fine.
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: Webbot on February 07, 2010, 11:19:07 PM
Can you get a Hitech HS 322

Thats the original upmarket version of the 311 that has sort of been discontinued.
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: Admin on February 08, 2010, 12:21:42 AM
Just because its cheaper doesn't mean it'll save you money.

Think about what you'll have to spend if the el-cheapo servo you buy breaks or fries for no reason within just a few week of you using it. Its cheap for a reason! :P

The HS-311 is really reliable, I've owned like 20 of them over ~9 years and only one fried for no reason, and one broke a gear. Compared to most servos I've used, thats really good reliability.
Title: Re: Suitable alternative to the hs-311 50 dollar robot infrared scanner servo?
Post by: Borot on February 08, 2010, 04:49:21 AM
I purchased the power (hd-1900a) micro servo already, i'll let you know if it fries. It does however drive(rotate) the tiny sharp infrared rangefinder and it's aluminium mount with ease. I think using a standard hs-311 or similar is better upon reflection as i can more easily reuse a standard servo for my next project.