building a lynxmotion robot with tower pro sg5010 servos?

Discussions regarding building a walking robot at home. Most of the robots participating at Robo-One competitions are custom fabricated.
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building a lynxmotion robot with tower pro sg5010 servos?

Post by animaniac » Wed Aug 25, 2010 9:01 pm

Post by animaniac
Wed Aug 25, 2010 9:01 pm

hi everyone, I plan to built my first robot on a budget, so buying 18 servos ain't cool... do you know if it's OK to use cheap chinese servos sg5010? their specs are the same as the basic ones except 5 times cheaper! if you know a better brand or where to get good deals, thanks in advance.
hi everyone, I plan to built my first robot on a budget, so buying 18 servos ain't cool... do you know if it's OK to use cheap chinese servos sg5010? their specs are the same as the basic ones except 5 times cheaper! if you know a better brand or where to get good deals, thanks in advance.
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Post by mog123 » Thu Aug 26, 2010 9:46 pm

Post by mog123
Thu Aug 26, 2010 9:46 pm

Stay away from the 5010 series. You'll just waste your money and will have to buy better servos. Get mg995 servos.
Stay away from the 5010 series. You'll just waste your money and will have to buy better servos. Get mg995 servos.
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Post by animaniac » Thu Aug 26, 2010 10:10 pm

Post by animaniac
Thu Aug 26, 2010 10:10 pm

well precisely, the mg995 seems to be horrible:

http://www.rcmodelreviews.com/mg995review.shtml
well precisely, the mg995 seems to be horrible:

http://www.rcmodelreviews.com/mg995review.shtml
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Post by Tyberius » Fri Aug 27, 2010 2:56 am

Post by Tyberius
Fri Aug 27, 2010 2:56 am

You get what you pay for with servos. There is no free lunch.
You get what you pay for with servos. There is no free lunch.
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Post by mog123 » Fri Aug 27, 2010 8:25 pm

Post by mog123
Fri Aug 27, 2010 8:25 pm

animaniac wrote:well precisely, the mg995 seems to be horrible:

http://www.rcmodelreviews.com/mg995review.shtml


They are of good quality, that's just a shitty review, from people that demand too much. They've got the torque they are said to have, the build quality isn't bad. But if you know how to solder it shouldn't be all that bad. Also - these servos have been out for a very long time and I assure you the quality has gone up.

Look here:

http://letsmakerobots.com/node/2423

This guy built a biped using those servos, that bad?
animaniac wrote:well precisely, the mg995 seems to be horrible:

http://www.rcmodelreviews.com/mg995review.shtml


They are of good quality, that's just a shitty review, from people that demand too much. They've got the torque they are said to have, the build quality isn't bad. But if you know how to solder it shouldn't be all that bad. Also - these servos have been out for a very long time and I assure you the quality has gone up.

Look here:

http://letsmakerobots.com/node/2423

This guy built a biped using those servos, that bad?
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Amazing

Post by UncleBob » Sun Oct 10, 2010 4:10 pm

Post by UncleBob
Sun Oct 10, 2010 4:10 pm

I just read through the link above the robot made with the tower pro servos is pretty amazing. You can obviously see the power (torque) of those servos when it does the one leg stand lean back.

The problem of over shooting servo is over come by s-curve.

Having said that I will find it very difficult to program such robot because firstly these servos do not have feedback so you have to triche each servo manually on the computer whereas normally I will triche the robot itself.

So I am very impress to see it still can walk so well partially help by the strong torque.

Secondly I don't have the electronic skills to build and program those boards.

So yes I think it can be done and you substitute money resource with labour and time resources.

But pretty impressive robot still.
I just read through the link above the robot made with the tower pro servos is pretty amazing. You can obviously see the power (torque) of those servos when it does the one leg stand lean back.

The problem of over shooting servo is over come by s-curve.

Having said that I will find it very difficult to program such robot because firstly these servos do not have feedback so you have to triche each servo manually on the computer whereas normally I will triche the robot itself.

So I am very impress to see it still can walk so well partially help by the strong torque.

Secondly I don't have the electronic skills to build and program those boards.

So yes I think it can be done and you substitute money resource with labour and time resources.

But pretty impressive robot still.
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Post by billyzelsnack » Sun Oct 10, 2010 11:32 pm

Post by billyzelsnack
Sun Oct 10, 2010 11:32 pm

The vstone robovie robots don't use servo feedback in their software and their robots have some of the best motions. You just move sliders around that represent the servos. (Doesn't the Kondo heartbeat software work this way too?)

I believe feedback is important, but it really is not as important for manually making motions as I thought it would be. Wrestling a robot and the software is not so easy. Now if I had 3 hands and voice control of the software I'd probably change my mind.
The vstone robovie robots don't use servo feedback in their software and their robots have some of the best motions. You just move sliders around that represent the servos. (Doesn't the Kondo heartbeat software work this way too?)

I believe feedback is important, but it really is not as important for manually making motions as I thought it would be. Wrestling a robot and the software is not so easy. Now if I had 3 hands and voice control of the software I'd probably change my mind.
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