Hello evryone! Well, that’s it, This summer I will probably buy some (about 12 maybe) servos to make whatever with it. I am looking for good servos for price/value. We have the :
RX-64 (biloid) :
• Holding Torque: 888 oz-in (64kg-cm) @ 18V
• Speed: 0.162 sec/60° @ 18V
• Operating Voltage: 12 to 21V (18V recommended)
• Operating Angle: 300° or Continuous turn
• RS485 Asynchronous Serial Communication (7343bps to 1Mbps)
• Feedback of Shaft Position, Temperature, Input Voltage & Load
• Ability to specify the Compliance Driving Settings
• Dimensions: 40.2 x 61.1 x 41 mm
• Weight: 116g
Pros :
-Super troque
-300 degrees is a lot and thus make good joints (instead of putting 2 servos for more reach, only 1 is good).
-Contunuous turns (so I can add lets say wheels to my humanoid)
-Feedback of Shaft Position, Temperature, Input Voltage & Load, very practical not to loose one of these because it’s overheating and you didn’t quite see it.
Cons :
-Weight : 116 grams is olmost the double of the 5990.
-Dimension : It’s kinda big and bulky… But I can probably do with it anyway.
-Control : I don’t quite understand how to control the servo motors (on the bioloid site the wrote that the D-117 could not be controled using the biloid CM-5 controller, mnaybe the RX-64 can’t either… So with what can I control them?)
-Need to make my own beackets
-Expensive (270$ about)
Pros :
-Size : Smaller and I can use the SES brakcets
-Hitec customer service is good (I only did it twice, but it was still good)
-lighter
-Way less expensive (130$ about)
Cons :
-Less torque
Sum : RX-64 has double the torque, more features (overheats it will shut down) and double the price.
Anyone knows other high end servo motors That we could use for humanoids?
I would go with which ever you are comfortable with. If you think you have the time and tools to build your own brackets and control the larger servo, go with that.
If not, stick with the hitec.
Money would be a big factor as well.
There are always the Vantec servos if you want o go really big. ho does 10 to 12 ft/lbs of torque sound? That’s 2304 oz/in. oh, they have a 24ft/lb torque one as well.
They start at $500 though and they make the RX-64 look like a feather as far as weight goes. But you could definitely build something big.
Yeah, I saw the Vantec 1/3 servo 27 pound/foot… I think it’s a bit big for me I’m not even sure if I could bring it in my room…
If I buy the RX-64 I will only have anough money for like… 6 of them.
Money is a big factor… I was thinking of that I could go with hitec for the moment and then sell them to buy the RX-64 (or another one if I see one coming out). Do the 5990 sell well when they are preowned?
How are you going to control the RX-64’s? Are you going to use an SSC-32? Are they compatible? And the servo controllers use 4.8V and 6.0V outputs don’t they? These monsters are 18V. Do you just use an 18V battery and a BEC? Just playing devils advocate and I might learn something.
The Dynamixel RX-28 or DX-117 would have made for a better comparison to the 5990. See this thread from Hivemind on some awesome humanoids using the DX-117:
I looked at all the feteares of the 5990 and can’t seem to find anything taht says that there’s feedback from the servo.
I have to say that DX-117 would probably plenty of torque, but I just looked at the strongest one in hitec conpared to the one by robotis.
The DX-177 is 199$ from where I can get it, the RX-28 too, so there more expensive than the 5990 and about as strong, maybe have a couple extra features. I was looking at the RX-64 because there so strong… How much Torque would I need to build a 24 DOF, maybe a tad less.
recollection is these different types of servos are not all operating from the same supply voltage. you may want to look into the details of not only how you plan to power them but also how you plan on controlling them.
There, I fixed it.
I’m not even sure if I could bring it in my room… 