Servo Types HS-311, and HS-322 Karbonite

Ok I have 9 HS-311, and 10 HS-322.
I’m curious if anyone more experienced might know how good these servos are and how well they can handle the weight and pressure, of the brackets and electronics.

I’m using the HS-311 for the upper body and arms, and the HS-322 for the legs (because of the stronger gears)

~markolise

From the description it sounds like you want to use them for a robo-one style biped. These servos are not strong enough for that. You can buy enough brackets to build the biped BRAT though. Those servos will work for a BRAT style biped…
lynxmotion.com/Category.aspx?CategoryID=97

The assembly instructions are here…
lynxmotion.com/images/html/build104.htm

The HS-311 and 322 are the low end servo. You really need HS-5645’s as a minimum to build a sucessfull 19 servo biped.

Well I originally had an Idea for a Robo-one style robot but i decided against it…
Are the HS-5645’s the most common to use in a biped style robot? for beginners at least.

I’m really working off a very small budget, the servos I have took me about a month to get.
Would they be strong enough for atleast a prototype of the biped I want, or are they not really strong at all?

Thanks for the help

edit

These HS-5645’s have metal gears, is that why they are so expencive, or is it the torque?
If I were to find metal gears for the HS-311’s could I use them instead or would it be much more trouble than its worth?

Yes the 5645 is very popular with robo-one style robots. That’s why I mentioned the BRAT. This 6 servo biped can use the weeker servos. Stronger servos are better, but the robot can really work with them.

What kind of battery would I need to have for the 5645’s? Right now the plans that I have I’m leaning towards two BAT-05. One battery for the left side and the other for the right.
Would that be efficient or would you suggest something better?

What kind is the difference between a analog servo and a digital servo?

I’ve read this question before on another post but all that was said is digital are more accurate and don’t require constant pulses.
But what i want to know is electronically whats the difference, I know very little of how servos work but what mechanically and electronically makes the difference?

The 5645 servos are expensive due to their metal gears, digital control board, FET H-bridge, and powerful high rpm motor. Metal gears will not make the 311 or 322 servo as good as a 5645 servo.

I have read and reread your postings and am not sure what you are wanting to build. If you are still talking about a robo-one bot then you only need the 6.0vdc 1600mAh battery. The 2800mAh one is too heavy and the additional current capacity is not required.

the robot I’m attempting to build is yes a robo-one style robot, but this is a personal project and it won’t be entered in competitions nor will it be subjected to that harsh of punishment.

It will most likely be slow moving until I can afford the 5645’s you were talking about.

For now I’m just going to use the ssc-32, but could I run that off of the 1600mAh battery as well or would it be suggested to use a seperate smaller battery for that?

And how long would battery life be for a 19 servo Robot?

hopefully this post helps.

I also work with a very small budget because I am on a fixed income. However, I find that if I scrimp on the parts I use for a particular project, I have much more difficulty than I would have had if I had bought quality components, and I usually end up having to replace stuff. That is not economical either.

It took me 4 months to build my Octabot Rover, but I used quality parts, and it worked the first time and continues to work wonderfully except for the servos, which I am replacing.

I just ordered a pair of Hitec HS-1422CR servos to replace the Parallax servos in the robot now, plus lots of other upgrades for Octabot. I decided to give myself and Octabot an early Christmas present, so it is also getting a custom pan/tilt base and four new sensors. :slight_smile:

I strongly encourage you to use quality components throughout your projects, even if it does take longer to get it all built. I find this is actually more economical in the long run due to not having to replace stuff later (at least most of the time).

8-Dale

I see, thanks for the suggestion, next time I build one I’m not gonna be wasting my time with these lower servos I’ll just save up enough money for the good stuff the first time.

Dale did you start with the brackets and stuff first or did you just buy the kit to start off?

I didn’t start out with Lynxmotion stuff because I wanted to get a robot to experiment with as fast as I could so I would have something while I build a larger project long term Lynxmotion SES based project.

Now that I am pretty much finished with Octabot (as of next month, I think), I will start a new robot hopefully in January. I will be starting out by gradually getting the brackets and servos I need to build something I can work with soonest.

If I can overcome one design issue, I will be building a tri-wheeled rover next, otherwise I will be starting construction of an 6 or 8 legged walker with wheels. I have already designed these in CAD using Lynxmotion Servo Erector Set parts, so I already know what I will need for either the Hexapod or Octapod versions.

If I go with the tri-wheel rover, I will start by getting parts for one of the wheel assemblies or perhaps the chassis first (brackets, etc) then get servos as I can afford them.

if I go with the wheeled Hexapod or Octapod, I will start building legs first or maybe the wheel assemblies since I can run it as a rover before it needs to walk. I can get parts for at least a single leg per month, including servos, and can always attach the finished legs to Octabot for testing.

There are many different ways you can go when building a new project. it just depends on what you want to build. if I were building a biped, I would start out by getting parts for the legs, since you will have to order pairs of several of the parts anyways.

You just have to think about what you are wanting to build and figure out what you can get to have something actually work the fastest and work with that while getting parts for other assemblies.

You can see everything I have designed to date and what I am planning by visiting my website. :smiley: I also have several different threads here, with pictures.

The Walk 'N Roll robots will likely be a 2 to 3 year project each for me, so I will likely be doing other smaller projects concurrently with their construction.

I also want to build a “camera bot”, an autonomous camera critter for when I am making movies of my other robots. :smiley: It will be able to track another robot or other object and keep the camera on it for filming. :slight_smile:

I did just order all the SES brackets and servos I need to build my custom pan/tilt base for Octabot, plus 4 more sensors for it. :slight_smile:

8-Dale

That’s a clever idea. Also, it could film behind it, and you could make the bot being filmed follow the camera bot for a front view.