Here come the clones

[UncleBob]

Then it looks good. Anyone built any robot with it? Performance?

[alphis]

The most advantage of CDS55xx servos is it's current control and heat control alogium. It never damage from stall.
UPTECH Robotics provide another board:BDMC1203 motor controller.
The BDMC1203 motor driver is an interesting motor driver that uses serial bus just like CDS55xx and Dynamixel,providing 12V/6A output and can support many driver on a serial bus.

document link:

http://robot.up-tech.com/en/DownList.asp?SortID=20

[alphis]

http://robot.up-tech.com/en/DownList.asp?SortID=5

[billyzelsnack]

Very cool. The robotics market definitely needs more options for inexpensive motor drivers.

[UncleBob]

be really interested to see an actual robot using these servos. Unless we see it walk it is hard to judge.

[n3o]

hihi ... got my cds5500, but still struggling to make it move using arduino ... anyone here managed to really make it work ? mind to share the details ?

update:

oh man, got it working, problem was due to the servo power source, i was using old pc power supply (12v to +ve and 5v to gnd) to get 7v. but it seems the servo dont like it, or maybe the signal line need real gnd to work. so now using 5v to +ve and gnd to gnd and finally it move ...

thx man

[n3o]

hi guys ...

just managed to get my first robot/quadrapod to walk. i am using CDS5500 and Arduino Duemilanove 328. IK is configured using PyPose/NUKE.

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[UncleBob]

Looking great! How do you feel about these servos?

[n3o]

Thanks.

I can't comment much as this is my first servo experience. But I did some load test.

Also found some problem reading the position value, somehow I need to read it twice, the first reading seems to return the previous value. Uptech did released new firmware but I'm not sure how to update it.

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Load test of 0.5kg weight on CDS5500; distance from the center of the servo spline to the center of the weight is around 9-10cm. All running fine.

With the weight of 0.75kg, it starts to make a lot of noise but keep moving.
With the weight of 0.85kg, it intermittently stalled.

Voltage read from the servo feedback is 9.9V. Min and Max voltage is 6V and 14V as read from the control table.

[Joe]

I'm finding myself intrigued by these servos. One thing I really need to know: does it have an output shaft, or at least an idler bearing, opposite the main output spline?

The CDS55XX Robot Servo User Manual says on page 3:

Double-side output shaft

If that means what I think it means, then I think I'm in love! Can anyone confirm?

[i-Bot]

I think it is an idler bearing. Looks like it is tapped M3 from the datasheet:
http://www.dfrobot.com/image/data/SER00 ... asheet.pdf

[Joe]

My first Up-Tech servo just arrived. It is indeed an idler bearing opposite the drive spline — or at the very least, a hole tapped M3 (as you said). The surrounding raised plastic area does not rotate; that's part of the case.

And, for the record, it does not fit in most LynxMotion brackets — the hole pattern matches, but the servo body is too long.

I'll post more detail (and photos) this weekend after I've had a chance to play with it more!

Cheers,
- Joe

[n3o]

yeah...cds5500 does not fit lynxmotion bracket, but i actually tried to trim off the bottom round area and it does fit on the lynxmotion multipurpose bracket. but you will need to stretch the C bracket a little. also, you cannot use the horn, i am using the horn from my friend's servos. d horn spline is actually futaba standard, 25 teeth if i remember correctly.

i hv got the lynxmotion bracket a month back to start my new quad with custom body and t-hex leg. hope it will goes well. will post the picture when i have some.