Holy Servo's Batman!
2008-10-01 03:45
So I guess today is Day 1 of my impending doom. I ordered my Diecimila (or however the heck you spell it) along with a solderless breadboard for it. I also went ahead and bought myself a servo at Hobby Town USA since it is just down the road from my house. I got the HS-311 Standard Servo. I have no clue if this is a good, average, or crappy servo. I figured it would do for learning processes and if it isn't applicible to a bot to start with, who's to say I can't find a use for it eventually. So basically the point of this post is two-fold.
1) I want to make sure I actually know something, so i labeled the parts that came with it, as you can see in the image. I believe they are labeled right, as I went off of assumptions and hunches. If I am wrong anywhere, lemme know.
2) I need to start to understand what all this gibbereish on the back of the pack means, so I am turning to some people who can answer it for me, since my google searches were fruitless.
Specifications of the HS-311
- One Resin Bushing
- Hitec Custom I.C.
- Operating Speed: 0.19sec/60° AT 4.8Volt
- Output Torque: 3.0kg-cm(42oz-in) AT 4.8Volt
- Weight: 43g(1.5oz)
- Size: 40 X 20 X 37mm(1.57 X 0.78 X 1.43)"
Now obviously I don't need help with the Weight and Size, I just included them to be complete. I am going to go ahead and put here what I think the entries mean, and you all can correct me as you see fit.
- One Resin Bushing - I have no clue, seriously.
- Hitech Custom I.C. - See above...
- Operating Speed - I think that this means that at 4.8 Volts it can make a 60° rotation in 0.19 seconds
- Output Torque - Following my above logic, then that would mean that at 4.8 Volts it can push (if set up to do so) something up to 42 oz.
- Chainer's blog
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well, what exactly do you
well, what exactly do you plan do do with the servo...cause for the most part. I don't think the speed or anything will really matter in the end as well. I just say this due to the fact that I have at least 7 different servos of various types and sizes and the only thing that matters is if it's a continuous rotation or not....
Torque will matter if you plan on moving heavy stuff or if it's going to have a lot of resistance...which, if you're just rotating the direction of a sensor is pointing....really won't matter.
Currently, that's about the
torque
about torque
Output Torque: 3.0kg-cm(42oz-in) AT 4.8Volt means that this device can hold or even move a weight of up to 3 kg when suspended from a 1 cm arm (measured from the center of the shaft to the suspension point). Appearantly that converts to a weight of 42 oz dangling from a 1 inch arm.
Think you've heard this before? Well probably you did. A lever also has an arm and a load. So a 42oz-in lever/servo could also lift 21 oz from a 2 inch arm. Or 84 oz from a half inch arm. Etcetera.
Of course servos are not always about lifting stuff. Sometimes the force is from friction in a wheel, or from accelerating a mass. Too many people still think of force as "weight". But real scientists (sounds pedantic huh?) use the Newton as the unit for force.
Basicly your servo can provide a 30 Newton force x a .01 meter arm. Your torque would be written as .3 Nm.
Servo stuff
Cool, it's good to know that