RaspberryPi L298n motor driver Board(English)

Description

This module is designed specifically for the Raspberry Pi Motor Driver Function board. Double H driver module uses ST L298N dual full-bridge driver, an integrated monolithic circuit in a 15- lead Multiwatt and PowerSO20 packages. It is a high voltage, high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together and the corresponding external terminal can be used for the con-nection of an external sensing resistor. An additional supply input is provided so that the logic works at a lower voltage

Technical Details

Overview

product Specification

schematic

Learn

1A connected to motor 1A, 1B connected to motor 1B, 2A connected to motor 2A, 2B connected to motor 2B, then you can adjust PWM to adjust speed , if you want to know your motor PWM pulse width, frequency information, Please read about motor reference maunal. It is note that the higher of the PWM frequency, the higher the system load with your pi.

Example and test code

#include <wiringPi.h>

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

int main (void)
{
  int ch ;

  if (wiringPiSetup () == -1)
    exit (1) ;

  pinMode (1, PWM_OUTPUT) ;

  for (;;)
  {
    for (ch = 0 ; ch < 1024 ; ++ch)
    {
      pwmWrite (1, ch) ;
      delay (1) ;
    }

    for (ch = 1023 ; ch >= 0 ; --ch)
    {
      pwmWrite (1, ch) ;
      delay (1) ;
    }
  }

  return 0 ;
}

(Tip:Compile Command:
cc -o myprog myprog.c -lwiringPi -lpthread )

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