
Connectors
4
SLVUAS3 – June 2016
Copyright © 2016, Texas Instruments Incorporated
DRV8837C Evaluation Module User's Guide
2.3
Speed Control Potentiometer (R7)
To control the speed of the motor a 10-k
Ω
potentiometer is connected to an ADC on the MSP430G2131
device. When the pot is all the way to the left, the PWM signal supplied to the driver will be 0%, and when
it is all the way to the right, the signal will be 100% which is denoted by the 0% and 100% labels next to
the potentiometer.
Figure 2. Motor Speed Control Potentiometer
2.4
Motor Outputs
One brushed DC motor can be connected to JP3 as shown in
.