L298P 电机驱动 shield
这个shield也不知道啥意思，怎么翻译，大概就是扩展板的意思？
买了一块L298P电机驱动的扩展板，没找到资料，搜索一下只有英文的，就翻译一下了
来源
https://electropeak.com/learn/interfacing-l298p-h-bridge-motor-driver-shield-with-arduino/
一个购买连接，不过也没找到更多资料了
- 先看看图
以下是说明
可以控制两台直流电机:
VMS: Module voltage(外部供电)
GND: Ground
MA1: Positive end for motor A （A电机正极）
MA2: Negative end for motor A （A电机负极）
MB1: Positive end for motor B （B电机正极）
MB2: Negative end for motor B （B电机负极）
PWMA: Speed control signal for motor A – This pin is connected to pin 10 of Arduino
A电机PWM输入 速度控制—也就是arduino的D10
PWMB: Speed control signal for motor B – This pin is connected to pin 11 of Arduino
B电机PWM输入 速度控制—也就是arduino的D11
ENA: Control signal for motor A – If HIGH, motor is in direct mode and if LOW, motor is rotating in reverse. This pin is connected to pin 12 of Arduino
A电机正反转控制—arduino的D12
ENB: Control signal for motor B – If HIGH, motor is in direct mode and if LOW, motor is rotating in reverse. This pin is connected to pin 13 of Arduino
B电机正反转控制—arduino的D13
Buzzer for make sound:
BUZ: Buzzer pin – This pin is connected to pin 4 of Arduino
蜂鸣器 D4
Connection for control servo motor:
SER: PWM pin for control servo motor – This pin is connected to pin 9 of Arduino
伺服电机（舵机） D9-PWM
Bluetooth connections:
BT2: Bluetooth Pins including +(3.3V) pins, (GND), RX (connected to D0) and TX (connected to D1)
连接蓝牙
Ultrasonic sensor connection:
ULT: connection pins to ultrasonic sensor including +(5V), (GND), Return (connected to D9) and Trigger (connected to D8)
超声波传感器
RBG LED connection:
RGB: RGB: For connection to RGB LED including pins B (connected to D6), G (connected to D5) and R (connected to D3)
RGB LED灯 R-D3 G-D5 B-D6 也不知道在哪亮。。
Other connections:
A/D: Analog and digital pins A0 to A5 for sensor and module use
D2: Digital pin 2 for sensor and module use
RS: Reset pin
GND: Ground
VCC: Board power supply – 3V, 5V
板供电
另一个地方找的示例代码，也是购买页。
https://protosupplies.com/product/l298p-motor-driver-shield/
/*
* L298P Motor Shield
* Code for exercising the L298P Motor Control portion of the shield
* The low level motor control logic is kept in the function 'Motor'
*/
// The following pin designations are fixed by the shield
int const BUZZER = 4;
// Motor A
int const ENA = 10;
int const INA = 12;
// Motor B
int const ENB = 11;
int const INB = 13;
int const MIN_SPEED = 27; // Set to minimum PWM value that will make motors turn
int const ACCEL_DELAY = 50; // delay between steps when ramping motor speed up or down.
//===============================================================================
// Initialization
//===============================================================================
void setup()
{
pinMode(ENA, OUTPUT); // set all the motor control pins to outputs
pinMode(ENB, OUTPUT);
pinMode(INA, OUTPUT);
pinMode(INB, OUTPUT);
pinMode(BUZZER, OUTPUT);
Serial.begin(9600); // Set comm speed for serial monitor messages
}
//===============================================================================
// Main
//===============================================================================
void loop()
{
// Run both motors Forward at 75% power
Motor('C', 'F', 75);
delay(3000);
// Run both motors in Reverse at 75% power but sound beeper first
Motor('C', 'F', 0); // Stop motors
delay(1000);
digitalWrite(BUZZER,HIGH);delay(500);digitalWrite(BUZZER,LOW);
delay(500);
digitalWrite(BUZZER,HIGH);delay(500);digitalWrite(BUZZER,LOW);
delay(1000);
Motor('C', 'R', 75); // Run motors forward at 75%
delay(3000);
// now run motors in opposite directions at same time at 50% speed
Motor('A', 'F', 50);
Motor ('B', 'R', 50);
delay(3000);
// now turn off both motors
Motor('C', 'F', 0);
delay(3000);
// Run the motors across the range of possible speeds in both directions
// Maximum speed is determined by the motor itself and the operating voltage
// Accelerate from zero to maximum speed
for (int i = 0; i <= 100; i++)
{
Motor('C', 'F', i);
delay(ACCEL_DELAY);
}
delay (2000);
// Decelerate from maximum speed to zero
for (int i = 100; i >= 0; --i)
{
Motor('C', 'F', i);
delay(ACCEL_DELAY);
}
delay (2000);
// Set direction to reverse and accelerate from zero to maximum speed
for (int i = 0; i <= 100; i++)
{
Motor('C', 'R', i);
delay(ACCEL_DELAY);
}
delay (2000);
// Decelerate from maximum speed to zero
for (int i = 100; i >= 0; --i)
{
Motor('C', 'R', i);
delay(ACCEL_DELAY);
}
// Turn off motors
Motor('C', 'F', 0);
delay (3000);
}
/*
* Motor function does all the heavy lifting of controlling the motors
* mot = motor to control either 'A' or 'B'. 'C' controls both motors.
* dir = Direction either 'F'orward or 'R'everse
* speed = Speed. Takes in 1-100 percent and maps to 0-255 for PWM control.
* Mapping ignores speed values that are too low to make the motor turn.
* In this case, anything below 27, but 0 still means 0 to stop the motors.
*/
void Motor(char mot, char dir, int speed)
{
// remap the speed from range 0-100 to 0-255
int newspeed;
if (speed == 0)
newspeed = 0; // Don't remap zero, but remap everything else.
else
newspeed = map(speed, 1, 100, MIN_SPEED, 255);
switch (mot) {
case 'A': // Controlling Motor A
if (dir == 'F') {
digitalWrite(INA, HIGH);
}
else if (dir == 'R') {
digitalWrite(INB, LOW);
}
analogWrite(ENA, newspeed);
break;
case 'B': // Controlling Motor B
if (dir == 'F') {
digitalWrite(INB, HIGH);
}
else if (dir == 'R') {
digitalWrite(INB, LOW);
}
analogWrite(ENB, newspeed);
break;
case 'C': // Controlling Both Motors
if (dir == 'F') {
digitalWrite(INA, HIGH);
digitalWrite(INB, HIGH);
}
else if (dir == 'R') {
digitalWrite(INA, LOW);
digitalWrite(INB, LOW);
}
analogWrite(ENA, newspeed);
analogWrite(ENB, newspeed);
break;
}
// Send what we are doing with the motors out to the Serial Monitor.
Serial.print ("Motor: ");
if (mot=='C')
Serial.print ("Both");
else
Serial.print (mot);
Serial.print ("t Direction: ");
Serial.print (dir);
Serial.print ("t Speed: ");
Serial.print (speed);
Serial.print ("t Mapped Speed: ");
Serial.println (newspeed);
}