该模块相对于传统的L298N效率上提高很多,体积上也大幅度减少,在额定范围内,芯片基本不发热。
TB6612FNG每通道输出最高1.2 A的连续驱动电流,启动峰值电流达2A/3.2 A(连续脉冲/单脉冲);
4种电机控制模式:正转/反转/制动/停止;
PWM支持频率高达100 kHz;
待机状态;
片内低压检测电路与热停机保护电路;
工作温度:-20~85℃;
SSOP24小型贴片封装。
本篇文章参考任意门
http://bildr.org/2012/04/tb6612fng-arduino/
A控制信号输入------PWMA VM ------电机驱动电压输入端(4.5V-15V)
A电机输入端2 ------AIN2 VCC ------逻辑电平输入端(2.7V-5.5V)
A电机输入端1 ------AIN1 GND ------ 接地
正常工作/待机状态控制端------STBY AO1 ------- A电机输出端1
B电机输入端1------BIN1 AO2 ------ A电机输出端2
B电机输入端2------BIN2 BO2 ------ B电机输出端2
B控制信号输入端------PWMB BO1 ------ B电机输出端1
接地------GND GND ------- 接地
程序打包下载:https://u16460183.ctfile.com/fs/16460183-295784301
//motor A connected between A01 and A02
//motor B connected between B01 and B02
int STBY = 10; //standby
//Motor A
int PWMA = 3; //Speed control
int AIN1 = 9; //Direction
int AIN2 = 8; //Direction
//Motor B
int PWMB = 5; //Speed control
int BIN1 = 11; //Direction
int BIN2 = 12; //Direction
void setup(){
pinMode(STBY, OUTPUT);
pinMode(PWMA, OUTPUT);
pinMode(AIN1, OUTPUT);
pinMode(AIN2, OUTPUT);
pinMode(PWMB, OUTPUT);
pinMode(BIN1, OUTPUT);
pinMode(BIN2, OUTPUT);
}
void loop(){
move(1, 255, 1); //motor 1, full speed, left
move(2, 255, 1); //motor 2, full speed, left
delay(1000); //go for 1 second
stop(); //stop
delay(250); //hold for 250ms until move again
move(1, 128, 0); //motor 1, half speed, right
move(2, 128, 0); //motor 2, half speed, right
delay(1000);
stop();
delay(250);
}
void move(int motor, int speed, int direction){
//Move specific motor at speed and direction
//motor: 0 for B 1 for A
//speed: 0 is off, and 255 is full speed
//direction: 0 clockwise, 1 counter-clockwise
digitalWrite(STBY, HIGH); //disable standby
boolean inPin1 = LOW;
boolean inPin2 = HIGH;
if(direction == 1){
inPin1 = HIGH;
inPin2 = LOW;
}
if(motor == 1){
digitalWrite(AIN1, inPin1);
digitalWrite(AIN2, inPin2);
analogWrite(PWMA, speed);
}else{
digitalWrite(BIN1, inPin1);
digitalWrite(BIN2, inPin2);
analogWrite(PWMB, speed);
}
}
void stop(){
//enable standby
digitalWrite(STBY, LOW);
}
通电,并测量马达A与B的输出电压,基本相同,电压差在正负0.03V,输出稳定。
想必能完美解决L9110S 和 L298N两路电机输出电压误差大导致的走不到直线。