Shield Controlador de Motores L293D p/ 4 motores DC até 600mA

DESCRIÇÃO EM PORTUGUÊS BREVEMENTE DISPONÍVEL

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*Atenção: as imagens são meramente ilustrativas.

Overview

Motor Control Shield is capable of driving 4 DC motors or 2 stepping motors at one time.

Features

• Configurable motor power supply via onboard jumper
  • when using 5V motor power supply : drives four 5V DC motors at one time
  • when using adjustable motor power supply : drives two 1.25V-6.45V DC motors at one time (9V external power supply is required)
• Onboard dual H-bridge driver L293D x 2
  • each L293D can drive 2 DC motors or 1 stepping motor at one time
  • totally 4 channel H-bridge, with 600mA output current (peak 1.2A) per single bridge
  • ESD protection

What's on Board

1. External power supply jack
2. Power input/output pinheader
3. Stepping motor interface
4. DC motor interface
5. M_PWR configuration : connects M_PWR (motor power) to 5V or ADJ
6. Power selection switch
7. Power indicator
8. AMS1117-ADJ : onboard linear regulator with adjustable output
9. Adjustable potentiometer : for adjusting the output voltage of ADJ (adjustable motor power)
10. L293D : dual H-bridge driver
11. LM2596-5.0 : onboard linear switching regulator with 5V output

Note : when in operation, it's normal that the onboard motor drivers and regulators generate lots of heat.

Downloads

Development resources: demo codes, schematic, datasheets, etc.
www.waveshare.com/Motor_Control_Shield

Arduino Code Example

int motor1_dir1 = 12;
int motor1_dir2 = 13;
int motor1_pwm  = 11;

int motor2_dir1 = 8;
int motor2_dir2 = 7;
int motor2_pwm  = 10;

int motor3_dir1 = 5;
int motor3_dir2 = 4;
int motor3_pwm  = 9;

int motor4_dir1 = 3;
int motor4_dir2 = 2;
int motor4_pwm  = 6;


void setup()
{
    pinMode(motor1_dir1,OUTPUT);
    pinMode(motor1_dir2,OUTPUT);
    pinMode(motor1_pwm,OUTPUT);
    
    pinMode(motor2_dir1,OUTPUT);
    pinMode(motor2_dir2,OUTPUT);
    pinMode(motor2_pwm,OUTPUT);
    
    pinMode(motor3_dir1,OUTPUT);
    pinMode(motor3_dir2,OUTPUT);
    pinMode(motor3_pwm,OUTPUT);
    
    pinMode(motor4_dir1,OUTPUT);
    pinMode(motor4_dir2,OUTPUT);
    pinMode(motor4_pwm,OUTPUT);
    
    digitalWrite(motor1_dir1,0);
    digitalWrite(motor1_dir2,1);
    digitalWrite(motor1_pwm,1);
    
    digitalWrite(motor2_dir1,0);
    digitalWrite(motor2_dir2,1);
    digitalWrite(motor2_pwm,1);
  
    digitalWrite(motor3_dir1,0);
    digitalWrite(motor3_dir2,1);
    digitalWrite(motor3_pwm,1);
  
    digitalWrite(motor4_dir1,0);
    digitalWrite(motor4_dir2,1);
    digitalWrite(motor4_pwm,1);
}
void loop()
{
    analogWrite(motor1_pwm, 128);
    analogWrite(motor2_pwm, 128);
    analogWrite(motor3_pwm, 128);
    analogWrite(motor4_pwm, 128);
    delay(500);
}