After searching Google, there is only information on connecting esp32 to L293D chip. No one has used the tutorial on connecting esp32 to L293D shield.
I have moved your topic to Project Guidance....I can't see anything really to do with Robotics.
Looks like a Uno kind of shield....Can you find code for interfacing it to a Uno?
If you can then it's possible the same code will run with ESP32.
That Motor Shield of post #1 is particularly designed for Arduino UNO and it goes over the UNO Board. It will be comfortable to opertae the following Motor Driver (Fig-1) using ESP32.
Figure-1:
Hardware Setup (Fig-2 tested)
1. Do not exceed 12V for supply voltage to Motor Driver to avoid damage to the onboard 5V regulator.
2. Remove jumpers marked ENA and ENB from the Motor Driver Board.
3. Functional Truth Table:
ENA IN1 IN2 Function Supply Voltage V(OUT1-OUT2)
15 2 4
H H L FRW Move 12V ==> 9.6V |8.1V|
H L H REV Move 12v ==> 9.6V |8.1V|
PWM1 H L Speed Control
L X X Motor Stop
4. If the Motors do not turn in the desired direction, then just swap the connections of OUT1/OUT2 and OUT3/OUT4.
Figure-2:
Figure-3:
Test Sketch for setup of Fig-2 (tested):
Motor-1's speed increases and then decreases and then repeats.
#define PWM1 15
#define FRW1 2
#define REV1 4
#define pwm1Channel 0
#define freq 490
#define resolution 8
void setup()
{
pinMode(PWM1, OUTPUT);
pinMode(FRW1, OUTPUT);
pinMode(REV1, OUTPUT);
digitalWrite(FRW1, HIGH); //FRW direction
digitalWrite(REV1, LOW);
ledcSetup(pwm1Channel, freq, resolution);
ledcAttachPin(PWM1, pwm1Channel);
}
void loop()
{
for (int dutyCycle = 0; dutyCycle <= 255; dutyCycle++)
{
//increasing Motor-1 speed with PWM
ledcWrite(pwm1Channel, dutyCycle);
delay(15);
}
//----------------------------
for (int dutyCycle = 255; dutyCycle >= 0; dutyCycle--)
{
//decreasing Motor-1 speed with PWM
ledcWrite(pwm1Channel, dutyCycle);
delay(15);
}
}
You can check the answers here.
https://www.reddit.com/r/arduino/comments/10dj4bi/how_i_can_connect_esp32_to_motor_shield_l293d/
Operation of L293D Motor Shield using ESP32:
1. Based on Schematic of post #6 and my experience of using this shield using AFMotor Library, I have given below a connection diagram (Fig-1, untested) between L293D Motor shield and ESP32.
Figure-1:
2. The OP may follow this link.