Pololu Dual VNH5019 User Manual

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only ENA/DIAGA will have the required pull-up resistor; you will need to add a separate pull-up resistor for the
ENB/DIAGB pin, or connect it to a microcontroller I/O line with a built-in pull-up resistor enabled. Also, you might
consider adding a 1k current-limiting resistor in series with the ENB/DIAGB connection as a safeguard against
incidental shorts.

You can later use a shorting block to restore the default combined EN/DIAG line if you populate the severed hole pair
with a 2×1 piece of the included 0.1″ male header strip.

Pololu Dual VNH5019 Motor Driver Shield User’s Guide

6. Customizing the Shield

Page 24 of 28