Note:

1. When your driving voltage (marked as 12V input in the above figure, the actual acceptable input range is 7-12V) is 7-12V, you can enable the on-board 5V logic power supply. When using the on-board 5V power supply, 5V in the interface

The power supply does not need to input voltage, but 5V voltage can be drawn for external use. (This is a regular application!)

2. When the driving voltage is higher than 12V and less than or equal to 24V (the chip manual proposes to support 35V, but according to

It is already remarkable to test the conservative application voltage support to 24V in general 298!) When, for example, to drive a rated voltage

18V motor. The jumper cap for the onboard 5V output enable must first be removed. Then connect 5V externally to the 5V output port

5V enable is a control signal with a level of 5V. When this signal input is valid and the power supply in the motor drive module is normal, the motor drive module outputs current. Otherwise, even if the power supply is normal, there is no current on the motor.

The voltage supplies the L298N internal logic circuit. (This is an unconventional application of high-voltage drive!)