Title: Esp8266 + SG90 servo + Xiaoai classmate

In this article, we will use Xiao Ai to control the SG90 servo. This can simply realize some operations such as opening the door and opening the light using the servo.

Material preparation

ESP8266SG90 servo DuPont line

Line connection

Three wires of the servo machine: Yellow wire->connect signal (D4), red wire->connect positive electrode (5V), brown wire->connect negative electrode (G) effect

Code

#include Servo.h

#define BLINKER_WIFI

#define BLINKER_MIOT_OUTLET

#include Blinker.h

char auth[]='064****a9'; //key

char ssid[]='PDCN'; //wifi name

char pswd[]='1234567890'; //wifi password

//Create a new component object

BlinkerButton Button1('btn-max'); //Maximum button

BlinkerButton Button2('btn-min'); //Minimum value button

Servo myservo;

BlinkerSlider Slider3('ser-num'); //Real-time position Slider Data key name Range 1-180

int servo_max,servo_min,ser_num,time_num;

void button1_callback(const String state) { //Maximum button function

BLINKER_LOG('get button state: ', servo_max);

myservo.write(servo_max);

Blinker.vibrate();

}

void button2_callback(const String state) { //Minimum button function

BLINKER_LOG('get button state: ', servo_min);

myservo.write(servo_min);

Blinker.vibrate();

}

void slider3_callback(int32_t value) //Slider function

{

ser_num=value;

myservo.write(ser_num);

Blinker.delay(100);

BLINKER_LOG('get slider value: ', value);

}

//Little Love Function

void miotPowerState(const String state)

{

BLINKER_LOG('need set power state: ', state);

if (state==BLINKER_CMD_ON) {

BLINKER_LOG('get button state: ', servo_max);

myservo.write(servo_max);

Blinker.vibrate();

}

else if (state==BLINKER_CMD_OFF) {

BLINKER_LOG('get button state: ', servo_min);

myservo.write(servo_min);

Blinker.vibrate();

}

}

void setup() {

Serial.begin(115200);

BLINKER_DEBUG.stream(Serial);

Blinker.begin(auth, ssid, pswd);

Button1.attach(button1_callback);

Button2.attach(button2_callback);

Slider3.attach(slider3_callback);

BlinkerMIOT.attachPowerState(miotPowerState);

myservo.attach(2); //servo.attach(): Set the servo data pin

myservo.write(10); //servo.write(): sets the rotation angle

servo_max=150;//The degree of rotation, here my range is 0-150°

servo_min=0;

time_num=500;

}

void loop() {

Blinker.run();

}

Regarding the pins, please refer to the figure below

Effect