Futaba Motor Control Inquiry (Using SSC32)

Help & Support Robots & Kits
1

Hellow !

I’m using MOTOR through a FUTABA SSC 32 controller.
(Model Name: S3306, S9156)

There is a difference in use. The range of position movement is different between the two models.

The Rotational Range of the two motors are the same. (Rotational Range : 180)
(S9156 spec : https://servodatabase.com/servo/futaba/s9156)

But it is different when controlling the same pulse through its controller

When driving from end to end ( Pulse 500 -> 2500)
S3306 Driving angle is about 180 degrees
S9156 Driving angle is about 150 degrees

What is the reason ?
Please help me.
Thanks.

3

Hi,

Can you provide a link where it says that the S3306 Servo has a 180 degrees as angular range ?
The specifications on ServoDatabase doesn’t seem to list this information : https://servodatabase.com/servo/futaba/s3306

4

Hi

This is a reference for purchasing a motor.
(https://servodatabase.com/servo/futaba/s9156)

The following data is from the Futaba homepage.
(https://futabausa.com/servocharts/)

The Futaba homepage only shows the driving angle -60 degrees (920 us) to 60 (2120 us) )degrees
(This is the same for both models.
There is no information in the data sheet from the place of purchase.)

5

Seeing the link you provided on Futaba’s website, both S3306 and S9156 servos are rated for a 120° total angular range with a 920uS to 2120uS pulse. Operating the servos beyond this range with the SSC-32 (500uS to 2500uS) might explain the inconstancy you are experiencing between the 2 servo models.