Actualy use a SSC04A serial servo controler ,
In first used the simplest mode ,needed 3 bytes comand like > start byte , servo number ,servo position .
And have success with polulu serial transmiter software .
In second ,went use polulu mode ,and send :
the start byte > 0x80
the device ID > 0x01
the comand ,with servo , forward direction and 180° range > 0x4f
the servo number for my test number 0 like > 0x00
the servo speed in middle range like > 0x3f
the servo position ,i’m not sure but think for max forward > 0x7f
So I send this frame with polulu serial transmiter on 6 byte command : 0x80 - 0x01 - 0x4f - 0x00 - 0x3f -0x7f
to my servo controler, so red light flash,like invalid command .
But still not see where is my error ,and like use this protocol for more precision ,
For me I think start error command after servo speed cause not realy understand the set position.
Thanks for who can help me .