Sabertooth Dual 25A Motor Driver User's Guide

Mode 2: R/C Input
R/C input mode is used with a standard hobby Radio control transmitter and receiver, or a
microcontroller using the same protocol. R/C mode is selected by setting switch 1 to the DOWN
position and switch 2 to the UP position. If running from a receiver, it is necessary to obtain one
or more servo pigtails and hook them up according to figure 5.1. If there are only motor drivers
being used it is acceptable to power the receiver or microcontroller directly from the Sabertooth
as shown. If using a receiver pack, do not connect power to the 5V line of the Sabertooth because
the maximum voltage it can tolerate is 6V.
Figure 5.1: R/C connection
There are three operating options for R/C mode. These are selected with switches 4, 5 and 6.
Switch 4: Mixed Mode
When Switch 4 is in the UP position, Mixed mode is
selected. In this mode, the R/C signal fed to the S1 input
controls the forward/backwards motion of the vehicle. This
is usually connected to the throttle channel of a pistol grip
transmitter, or the elevator channel of a dual stick
transmitter. The R/C signal fed to the S2 input controls the
turning of the vehicle.
When switch 4 is in the DOWN position, Independent mode is selected. In this mode, the signal
fed to the S1 input directly controls Motor 1 (M1A and M1B) and the signal fed to S2 controls
Motor 2.
R/C Mixed or Independent