This repository contains a library to control a motor connected to an H-Bridge (i.e. L293D), that can be used with Arduino and ESP32.
The ESP32 version can also configure the PWM frequency and resolution, also a channel is required.
To stop the motor a speed of zero can be used, by default the library sets the pwm output to 100% and disables the motor signals.
If required, this can be changed by using the "SetStopPWMValue" function and setting the stop pwm to 0.
#include <Arduino.h>
#include <L293D.h>
#define MOTOR_A 1 // motor pin a
#define MOTOR_B 2 // motor pin b
#define MOTOR_ENABLE 3 // Enable (also PWM pin)
#define PWM_MOTOR_FREQUENCY 200
#define PWM_MOTOR_RESOLUTION 8
// Create motor object using given pins
L293D motor(MOTOR_A, MOTOR_B, MOTOR_ENABLE);
void setup() {
// begin --> true false, enables disables PWM, use given frequency and resolution
motor.begin(true, PWM_MOTOR_FREQUENCY, PWM_MOTOR_RESOLUTION);
// Speed -100%...0..100%
motor.SetMotorSpeed(100);
}
void loop() {
}#include <Arduino.h>
#include <L293D.h>
#define MOTOR_A 1 // motor pin a
#define MOTOR_B 2 // motor pin b
#define MOTOR_ENABLE 3 // Enable (also PWM pin)
// Create motor object using given pins
L293D motor(MOTOR_A, MOTOR_B, MOTOR_ENABLE);
void setup() {
// begin --> true false, enables disables PWM
motor.begin(true);
// Speed -100%...0..100%
motor.SetMotorSpeed(100);
}
void loop() {
}Create a motor, either only one direction or two directions including enable(pwm). Using Pin1 and Pin2 to connect to the motor, and pin3 for pwm and using pwm channel 0 (not supported for Arduino). In case Pin is -1 (not set)
L293D motor(1, 2, 3, 0);Initialize pins etc. Optional parameter to set PWM mode and also PWM frequency.
motor.begin(true, 1000); //ESP32
L293D(int Motor1, int Motor2 = -1, int enablePin = -1, int pwmChannel = 0);
bool begin(bool usePwm = false, int frequency = 1000, int resolution = 8);
// Arduino
L293D::L293D(int MotorA, int MotorB, int enablePin);
bool begin(bool usePwm = false);
bool Stop();
bool SetMotorSpeed(double speedPercent);