Mode 4: Packetized serial
Packetized serial mode uses TTL level RS-232 serial data to set the speed and direction of the
motor. There is a short packet format consisting of an address byte, a command byte, a data byte
and a 7 bit checksum. Packetized serial automatically detects the transmitted baud rate based on
the first character sent, which must be 170. Address bytes are set via dip switches. Up to 8
Sabertooth motor drivers may be ganged together on a single serial line. This makes packetized
serial the preferred method to interface multiple Sabertooths to a PC or laptop. Because
Sabertooth uses the same protocol as our SyRen single motor drivers, both can use used together
from the same serial master.