要写在这上面的主要就是原始的Demo程序（官方提供的库例子），和实际的案例，方便展示和调试的时候快速使用。
因为确实是模块的数量比较多，一篇一篇的写比较费力，干脆就一篇写完就好了。

这是一篇水文，没啥技术。
严格来说，我几乎没在这里写啥代码，都是从Demo中移过来的，只是为了把功能写在这里。

ESP8266使用MQTT连接阿里云物联网平台(官方NONOS_SDK和Arduino_IDE )
ESP8266自制廉价Gokit SOC方案

http://arduino.esp8266.com/stable/package_esp8266com_index.json

涉及到的传感器列表

序号名称型号实物图片
1DHT11 温湿度模块
25V 步进电机+ ULN2003步进电机驱动板
3HC-SR501 人体红外感应
4超声波测距模块 HC-SR04
55色套装按键开关
6LCD1602转接板 含液晶屏
7红外线接收/发送板
8单个手柄模块
9MX1508 2路直流电机驱动模块+电机
10蜂鸣器模块
11火焰传感器
12雨量传感器
130.96寸 OLED
14Micro SD卡模块

DHT11 温湿度模块

案例中使用的库为：DHT_sensor_library_for_ESPx

官方Demo

默认是使用的DHT22，DHT11稍加修改即可。

#include "DHTesp.h"

#ifdef ESP32
#pragma message(THIS EXAMPLE IS FOR ESP8266 ONLY!)
#error Select ESP8266 board.
#endif

DHTesp dht;

void setup()
{
  Serial.begin(115200);
  Serial.println();
  Serial.println("Status\tHumidity (%)\tTemperature (C)\t(F)\tHeatIndex (C)\t(F)");
  String thisBoard= ARDUINO_BOARD;
  Serial.println(thisBoard);

  // Autodetect is not working reliable, don't use the following line
  // dht.setup(17);
  // use this instead: 
  dht.setup(17, DHTesp::DHT22); // Connect DHT sensor to GPIO 17
}

void loop()
{
  delay(dht.getMinimumSamplingPeriod());

  float humidity = dht.getHumidity();
  float temperature = dht.getTemperature();

  Serial.print(dht.getStatusString());
  Serial.print("\t");
  Serial.print(humidity, 1);
  Serial.print("\t\t");
  Serial.print(temperature, 1);
  Serial.print("\t\t");
  Serial.print(dht.toFahrenheit(temperature), 1);
  Serial.print("\t\t");
  Serial.print(dht.computeHeatIndex(temperature, humidity, false), 1);
  Serial.print("\t\t");
  Serial.println(dht.computeHeatIndex(dht.toFahrenheit(temperature), humidity, true), 1);
  Delay(2000);
}

5V 步进电机+ ULN2003步进电机驱动板

//使用arduino IDE自带的Stepper.h库文件
#include <Stepper.h>

管脚1连接的IO4
管脚2连接的IO0
管脚3连接的IO2
管脚4连接的IO15

每转步数为：100
转速为：10

#include <Stepper.h>

Stepper mystepper(100,4,0,2,15);

void setup(){
  mystepper.setSpeed(10);
}

void loop(){
  mystepper.step(10);

}

人体红外感应

单个手柄模块

继电器

void setup(){
  pinMode(15, OUTPUT);
}

void loop(){
  digitalWrite(15,HIGH);

}

超声波传感器

HC-SR04 需要 5v电压
HC-SR04P 需要 3.3V – 5V电压

// 定义引脚编号
const int trigPin = 4;  //D4
const int echoPin = 5;  //D5

// 定义变量
long duration;
int distance;

void setup() {
pinMode(trigPin, OUTPUT); // 将trigPin设置为输出
pinMode(echoPin, INPUT); // 将echoPin设置为输入
Serial.begin(9600); // 启动串行通信
}

void loop() {
// Clears the trigPin
digitalWrite(trigPin, LOW);
delayMicroseconds(2);

//将trigPin设置为HIGH状态10微秒
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

// 读取echoPin，以微秒为单位返回声波传播时间
duration = pulseIn(echoPin, HIGH);

// 计算距离
distance= duration*0.034/2;
// 打印距离在串行监视器
Serial.print("Distance: ");
Serial.println(distance);
delay(2000);
}

雨滴传感器

0.96寸 OLED

0x3C

Scanning...
I2C device found at address 0x3C !
done

使用的库是U8glib

我们在这里只需要找到我们自己的OLED屏幕就好了，取消前面的注释。U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE);

/*

  PrintTest.pde
  
  How to use the base class "Print"
  
  >>> Before compiling: Please remove comment from the constructor of the 
  >>> connected graphics display (see below).
  
  Universal 8bit Graphics Library, https://github.com/olikraus/u8glib/
  
  Copyright (c) 2012, olikraus@gmail.com
  All rights reserved.

  Redistribution and use in source and binary forms, with or without modification, 
  are permitted provided that the following conditions are met:

  * Redistributions of source code must retain the above copyright notice, this list 
    of conditions and the following disclaimer.
    
  * Redistributions in binary form must reproduce the above copyright notice, this 
    list of conditions and the following disclaimer in the documentation and/or other 
    materials provided with the distribution.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
  
*/


#include "U8glib.h"

// setup u8g object, please remove comment from one of the following constructor calls
// IMPORTANT NOTE: The following list is incomplete. The complete list of supported 
// devices with all constructor calls is here: https://github.com/olikraus/u8glib/wiki/device
//U8GLIB_NHD27OLED_BW u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_NHD27OLED_2X_BW u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_NHD27OLED_GR u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_NHD27OLED_2X_GR u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_NHD31OLED_BW u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_NHD31OLED_2X_BW u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_NHD31OLED_GR u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_NHD31OLED_2X_GR u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGS102 u8g(13, 11, 10, 9, 8);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGM132 u8g(13, 11, 10, 9);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGM128 u8g(13, 11, 10, 9);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGM128_2X u8g(13, 11, 10, 9);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_ST7920_128X64_1X u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, 17, 16);   // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, di=17,rw=16
//U8GLIB_ST7920_128X64_4X u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, 17, 16);   // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, di=17,rw=16
//U8GLIB_ST7920_128X64_1X u8g(18, 16, 17);    // SPI Com: SCK = en = 18, MOSI = rw = 16, CS = di = 17
//U8GLIB_ST7920_128X64_4X u8g(18, 16, 17);    // SPI Com: SCK = en = 18, MOSI = rw = 16, CS = di = 17
//U8GLIB_ST7920_192X32_1X u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, 17, 16);   // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, di=17,rw=16
//U8GLIB_ST7920_192X32_4X u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, 17, 16);   // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, di=17,rw=16
//U8GLIB_ST7920_192X32_1X u8g(18, 16, 17);    // SPI Com: SCK = en = 18, MOSI = rw = 16, CS = di = 17
//U8GLIB_ST7920_192X32_4X u8g(18, 16, 17);    // SPI Com: SCK = en = 18, MOSI = rw = 16, CS = di = 17
//U8GLIB_ST7920_192X32_1X u8g(13, 11, 10);    // SPI Com: SCK = en = 13, MOSI = rw = 11, CS = di = 10
//U8GLIB_ST7920_192X32_4X u8g(10);        // SPI Com: SCK = en = 13, MOSI = rw = 11, CS = di = 10, HW SPI
//U8GLIB_ST7920_202X32_1X u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, 17, 16);   // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, di=17,rw=16
//U8GLIB_ST7920_202X32_4X u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, 17, 16);   // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, di=17,rw=16
//U8GLIB_ST7920_202X32_1X u8g(18, 16, 17);    // SPI Com: SCK = en = 18, MOSI = rw = 16, CS = di = 17
//U8GLIB_ST7920_202X32_4X u8g(18, 16, 17);    // SPI Com: SCK = en = 18, MOSI = rw = 16, CS = di = 17
//U8GLIB_LM6059 u8g(13, 11, 10, 9);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_LM6063 u8g(13, 11, 10, 9);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGXL160_BW u8g(10, 9);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGXL160_GR u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGXL160_2X_BW u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_DOGXL160_2X_GR u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_PCD8544 u8g(13, 11, 10, 9, 8);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, Reset = 8
//U8GLIB_PCF8812 u8g(13, 11, 10, 9, 8);        // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, Reset = 8
//U8GLIB_KS0108_128 u8g(8, 9, 10, 11, 4, 5, 6, 7, 18, 14, 15, 17, 16);         // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, cs1=14, cs2=15,di=17,rw=16
//U8GLIB_LC7981_160X80 u8g(8, 9, 10, 11, 4, 5, 6, 7,  18, 14, 15, 17, 16);     // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, cs=14 ,di=15,rw=17, reset = 16
//U8GLIB_LC7981_240X64 u8g(8, 9, 10, 11, 4, 5, 6, 7,  18, 14, 15, 17, 16);     // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, cs=14 ,di=15,rw=17, reset = 16
//U8GLIB_LC7981_240X128 u8g(8, 9, 10, 11, 4, 5, 6, 7,  18, 14, 15, 17, 16);     // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 en=18, cs=14 ,di=15,rw=17, reset = 16
//U8GLIB_ILI9325D_320x240 u8g(18,17,19,U8G_PIN_NONE,16 );              // 8Bit Com: D0..D7: 0,1,2,3,4,5,6,7 en=wr=18, cs=17, rs=19, rd=U8G_PIN_NONE, reset = 16
//U8GLIB_SBN1661_122X32 u8g(8,9,10,11,4,5,6,7,14,15, 17, U8G_PIN_NONE, 16);     // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7 cs1=14, cs2=15,di=17,rw=16,reset = 16
//U8GLIB_SSD1306_128X64 u8g(13, 11, 10, 9);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SSD1306_128X64 u8g(4, 5, 6, 7);    // SW SPI Com: SCK = 4, MOSI = 5, CS = 6, A0 = 7 (new white HalTec OLED)
//U8GLIB_SSD1306_128X64 u8g(10, 9);        // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NONE|U8G_I2C_OPT_DEV_0);    // I2C / TWI 
//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0|U8G_I2C_OPT_NO_ACK|U8G_I2C_OPT_FAST);    // Fast I2C / TWI 
//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK);    // Display which does not send AC
//U8GLIB_SSD1306_ADAFRUIT_128X64 u8g(13, 11, 10, 9);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SSD1306_ADAFRUIT_128X64 u8g(10, 9);        // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
//U8GLIB_SSD1306_128X32 u8g(13, 11, 10, 9);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SSD1306_128X32 u8g(10, 9);             // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
//U8GLIB_SSD1306_128X32 u8g(U8G_I2C_OPT_NONE);    // I2C / TWI 
//U8GLIB_SH1106_128X64 u8g(13, 11, 10, 9);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SH1106_128X64 u8g(4, 5, 6, 7);    // SW SPI Com: SCK = 4, MOSI = 5, CS = 6, A0 = 7 (new blue HalTec OLED)
U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_NONE);    // I2C / TWI 
//U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_DEV_0|U8G_I2C_OPT_FAST);    // Dev 0, Fast I2C / TWI
//U8GLIB_SH1106_128X64 u8g(U8G_I2C_OPT_NO_ACK);    // Display which does not send ACK
//U8GLIB_SSD1309_128X64 u8g(13, 11, 10, 9);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_SSD1327_96X96_GR u8g(U8G_I2C_OPT_NONE);    // I2C
//U8GLIB_SSD1327_96X96_2X_GR u8g(U8G_I2C_OPT_NONE);    // I2C
//U8GLIB_UC1611_DOGM240 u8g(U8G_I2C_OPT_NONE);    // I2C
//U8GLIB_UC1611_DOGM240 u8g(13, 11, 10, 9);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_UC1611_DOGM240 u8g(10, 9);        // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
//U8GLIB_UC1611_DOGXL240 u8g(U8G_I2C_OPT_NONE);    // I2C
//U8GLIB_UC1611_DOGXL240 u8g(13, 11, 10, 9);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
//U8GLIB_UC1611_DOGXL240 u8g(10, 9);        // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are  SCK = 13 and MOSI = 11)
//U8GLIB_NHD_C12864 u8g(13, 11, 10, 9, 8);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_NHD_C12832 u8g(13, 11, 10, 9, 8);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_LD7032_60x32 u8g(13, 11, 10, 9, 8);    // SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_LD7032_60x32 u8g(11, 12, 9, 10, 8);    // SPI Com: SCK = 11, MOSI = 12, CS = 9, A0 = 10, RST = 8  (SW SPI Nano Board)
//U8GLIB_UC1608_240X64 u8g(13, 11, 10, 9, 8);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_UC1608_240X64_2X u8g(13, 11, 10, 9, 8);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_UC1608_240X64 u8g(10, 9, 8);    // HW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_UC1608_240X64_2X u8g(10, 9, 8);    // HW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_UC1608_240X u8g(13, 11, 10, 9, 8);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_UC1608_240X64_2X u8g(13, 11, 10, 9, 8);    // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_UC1608_240X64 u8g(10, 9, 8);    // HW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_UC1608_240X64_2X u8g(10, 9, 8);    // HW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9, RST = 8
//U8GLIB_T6963_240X128 u8g(8, 9, 10, 11, 4, 5, 6, 7, 14, 15, 17, 18, 16); // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7, cs=14, a0=15, wr=17, rd=18, reset=16
//U8GLIB_T6963_128X128 u8g(8, 9, 10, 11, 4, 5, 6, 7, 14, 15, 17, 18, 16); // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7, cs=14, a0=15, wr=17, rd=18, reset=16
//U8GLIB_T6963_240X64 u8g(8, 9, 10, 11, 4, 5, 6, 7, 14, 15, 17, 18, 16); // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7, cs=14, a0=15, wr=17, rd=18, reset=16
//U8GLIB_T6963_128X64 u8g(8, 9, 10, 11, 4, 5, 6, 7, 14, 15, 17, 18, 16); // 8Bit Com: D0..D7: 8,9,10,11,4,5,6,7, cs=14, a0=15, wr=17, rd=18, reset=16
//U8GLIB_HT1632_24X16 u8g(3, 2, 4);        // WR = 3, DATA = 2, CS = 4
//U8GLIB_SSD1351_128X128_332 u8g(13, 11, 8, 9, 7); // Arduino UNO: SW SPI Com: SCK = 13, MOSI = 11, CS = 8, A0 = 9, RESET = 7 (http://electronics.ilsoft.co.uk/ArduinoShield.aspx)
//U8GLIB_SSD1351_128X128_332 u8g(76, 75, 8, 9, 7); // Arduino DUE: SW SPI Com: SCK = 13, MOSI = 11, CS = 8, A0 = 9, RESET = 7 (http://electronics.ilsoft.co.uk/ArduinoShield.aspx)
//U8GLIB_SSD1351_128X128_332 u8g(8, 9, 7); // Arduino: HW SPI Com: SCK = 13, MOSI = 11, CS = 8, A0 = 9, RESET = 7 (http://electronics.ilsoft.co.uk/ArduinoShield.aspx)
//U8GLIB_SSD1351_128X128_HICOLOR u8g(76, 75, 8, 9, 7); // Arduino DUE, SW SPI Com: SCK = 76, MOSI = 75, CS = 8, A0 = 9, RESET = 7 (http://electronics.ilsoft.co.uk/ArduinoShield.aspx)
//U8GLIB_SSD1351_128X128_HICOLOR u8g(8, 9, 7); // Arduino, HW SPI Com: SCK = 76, MOSI = 75, CS = 8, A0 = 9, RESET = 7 (http://electronics.ilsoft.co.uk/ArduinoShield.aspx)
//U8GLIB_SSD1351_128X128GH_332 u8g(8, 9, 7); // Arduino, HW SPI Com: SCK = 76, MOSI = 75, CS = 8, A0 = 9, RESET = 7 (Freetronics OLED)
//U8GLIB_SSD1351_128X128GH_HICOLOR u8g(8, 9, 7); // Arduino, HW SPI Com: SCK = 76, MOSI = 75, CS = 8, A0 = 9, RESET = 7 (Freetronics OLED)

void draw(void) {
  // graphic commands to redraw the complete screen should be placed here  
  u8g.setFont(u8g_font_unifont);
  u8g.setPrintPos(0, 20); 
  // call procedure from base class, http://arduino.cc/en/Serial/Print
  u8g.print("Hello World!");
}

void setup(void) {
  // flip screen, if required
  // u8g.setRot180();
}

void loop(void) {
  // picture loop
  u8g.firstPage();  
  do {
    draw();
  } while( u8g.nextPage() );
  
  // rebuild the picture after some delay
  delay(500);
}

警告： U8glib 库要求运行在 (avr, sam) 架构()，可能与你现在运行在 (esp8266) 架构上的开发板()不兼容。

这里使用的是ESP8266-OLED_Display_Library库，
SDA连接到IO2
SCL连接到IO14

// Example sketch for testing OLED display

// We need to include Wire.h for I2C communication
#include <Wire.h>
#include "OLED.h"

// Declare OLED display
// display(SDA, SCL);
// SDA and SCL are the GPIO pins of ESP8266 that are connected to respective pins of display.
OLED display(2, 14);

void setup() {
  Serial.begin(9600);
  Serial.println("OLED test!");

  // Initialize display
  display.begin();

  // Test message
  display.print("Hello World");
  delay(3*1000);

  // Test long message
  display.print("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.");
  delay(3*1000);

  // Test display clear
  display.clear();
  delay(3*1000);

  // Test message postioning
  display.print("TOP-LEFT");
  display.print("4th row", 4);
  display.print("RIGHT-BOTTOM", 7, 4);
  delay(3*1000);

  // Test display OFF
  display.off();
  display.print("3rd row", 3, 8);
  delay(3*1000);

  // Test display ON
  display.on();
  delay(3*1000);
}

int r = 0, c = 0;

void loop() {
  r = r % 8;
  c = micros() % 6;

  if (r == 0)
    display.clear();

  display.print("Hello World", r++, c++);

  delay(500);
}

Micro SD卡模块

MX1508 2路直流电机驱动模块正反转

https://github.com/Saeterncj/MX1508

 void setMotor(int speedpin,int dirpin, int speed)
 {
if (speed == 0)
{
   digitalWrite(speedpin, LOW);
  }
 else if (speed > 0)
{
   digitalWrite(dirpin, LOW);
analogWrite(speedpin, speed);
  }
else
{
 digitalWrite(dirpin, HIGH);
   analogWrite(speedpin, speed);
}
}

void setup(){
  pinMode(5, OUTPUT);
  pinMode(4, OUTPUT);
  digitalWrite(5, LOW);
  digitalWrite(4, LOW);
}

void loop(){
  setMotor(5, 4,-255);

}

ESP32MotorControl

LCD1602转接板

这是一个ESP8266
LCD1602转接板

官方Demo

这里使用了LiquidCrystal_I2C_Hangul这个库。
Arduino

0x3F
没黑框说明了对比度不对，可以调背面的可调电阻。

#include<LiquidCrystal_I2C_Hangul.h>
#include<Wire.h>

LiquidCrystal_I2C_Hangul lcd(0x3F,16,2); 

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd.print("Hello CYQSD!");
}

void loop() {
}

如果没有成功，可以使用，下面的地址搜索来搜索。

#include <Wire.h>


void setup()
{
Wire.begin();

Serial.begin(9600);
Serial.println("\nI2C Scanner");
}


void loop()
{
byte error, address;
int nDevices;

Serial.println("Scanning...");

nDevices = 0;
for(address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();

if (error == 0)
{
Serial.print("I2C device found at address 0x");
if (address<16)
Serial.print("0");
Serial.print(address,HEX);
Serial.println(" !");

nDevices++;
}
else if (error==4)
{
Serial.print("Unknow error at address 0x");
if (address<16)
Serial.print("0");
Serial.println(address,HEX);
}
}
if (nDevices == 0)
Serial.println("No I2C devices found\n");
else
Serial.println("done\n");

delay(5000); // wait 5 seconds for next scan
}

如果能够搜索到的话，串口会有如下的提示信息。

I2C Scanner
Scanning...
I2C device found at address 0x3F !
done
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F,16,2);

void setup()
{
  lcd.init();
  lcd.backlight();
}

void loop()
{
  lcd.setCursor(0,0);
  lcd.print("LCD1602 Test1");
  lcd.setCursor(0,1);
  lcd.print("cyqsd");
  delay(1000);
}

SD卡模块

这是一个ESP8266读和写SD卡的案例，一般就在官方案例中，实际使用的时候需要结合模块才能使用。

官方Demo

/*
  SD card read/write

  This example shows how to read and write data to and from an SD card file
  The circuit:
   SD card attached to SPI bus as follows:
 ** MOSI - pin 11
 ** MISO - pin 12
 ** CLK - pin 13
 ** CS - pin 4

  created   Nov 2010
  by David A. Mellis
  modified 9 Apr 2012
  by Tom Igoe

  This example code is in the public domain.

*/

#include <SPI.h>
#include <SD.h>

File myFile;

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }


  Serial.print("Initializing SD card...");

  if (!SD.begin(4)) {
    Serial.println("initialization failed!");
    return;
  }
  Serial.println("initialization done.");

  // open the file. note that only one file can be open at a time,
  // so you have to close this one before opening another.
  myFile = SD.open("test.txt", FILE_WRITE);

  // if the file opened okay, write to it:
  if (myFile) {
    Serial.print("Writing to test.txt...");
    myFile.println("testing 1, 2, 3.");
    // close the file:
    myFile.close();
    Serial.println("done.");
  } else {
    // if the file didn't open, print an error:
    Serial.println("error opening test.txt");
  }

  // re-open the file for reading:
  myFile = SD.open("test.txt");
  if (myFile) {
    Serial.println("test.txt:");

    // read from the file until there's nothing else in it:
    while (myFile.available()) {
      Serial.write(myFile.read());
    }
    // close the file:
    myFile.close();
  } else {
    // if the file didn't open, print an error:
    Serial.println("error opening test.txt");
  }
}

void loop() {
  // nothing happens after setup
}

红外接收/发送

uint16_t rawData[199] = {4480, 4398,  602, 1612,  572, 520,  572, 1616,  572, 1614,  574, 520,  574, 520,  572, 1612,  574, 520,  574, 520,  574, 1614,  572, 520,  572, 522,  572, 1614,  574, 1614,  574, 518,  572, 1614,  572, 520,  572, 1614,  572, 1614,  572, 1614,  574, 1612,  570, 522,  574, 1614,  572, 1614,  572, 1616,  572, 520,  572, 520,  572, 522,  572, 520,  570, 1616,  572, 522,  572, 520,  572, 1614,  574, 1614,  572, 1614,  572, 520,  572, 522,  572, 520,  572, 522,  572, 520,  574, 520,  572, 522,  572, 522,  572, 1614,  572, 1614,  572, 1616,  572, 1614,  572, 1614,  572, 5236,  4504, 4402,  598, 1616,  572, 522,  570, 1616,  572, 1616,  570, 524,  568, 524,  572, 1616,  570, 524,  568, 526,  570, 1616,  572, 522,  570, 522,  572, 1614,  572, 1614,  572, 522,  566, 1620,  570, 524,  568, 1618,  568, 1618,  572, 1616,  570, 1618,  572, 520,  570, 1616,  572, 1614,  570, 1616,  572, 524,  570, 520,  572, 522,  572, 522,  572, 1614,  570, 524,  570, 522,  570, 1614,  572, 1616,  570, 1616,  572, 520,  570, 522,  572, 520,  572, 520,  574, 520,  574, 520,  572, 522,  572, 520,  572, 1614,  572, 1614,  572, 1616,  572, 1616,  572, 1614,  570};
uint16_t rawData2[199] = {4444, 4436,  564, 1650,  536, 556,  538, 1648,  540, 1648,  538, 556,  562, 530,  564, 1622,  536, 558,  538, 532,  560, 1648,  538, 556,  540, 554,  536, 1650,  536, 1650,  534, 558,  540, 1648,  538, 1648,  538, 556,  538, 534,  586, 1622,  538, 1650,  564, 1624,  536, 1650,  538, 1650,  536, 534,  558, 1652,  536, 1650,  536, 534,  562, 532,  560, 558,  510, 582,  536, 532,  564, 1648,  534, 1652,  538, 556,  534, 1652,  538, 534,  556, 558,  534, 560,  534, 560,  510, 584,  510, 558,  534, 1676,  510, 560,  560, 1650,  510, 1676,  510, 1678,  508, 1678,  510, 5296,  4442, 4464,  534, 1678,  510, 584,  506, 1680,  508, 1680,  510, 562,  528, 562,  530, 1680,  506, 560,  534, 562,  530, 1680,  506, 564,  528, 564,  528, 1682,  504, 1682,  506, 562,  532, 1680,  504, 1682,  504, 566,  528, 564,  528, 1682,  506, 1682,  504, 1682,  504, 1682,  504, 1684,  506, 562,  528, 1682,  504, 1684,  504, 564,  530, 566,  528, 564,  528, 566,  528, 562,  530, 1682,  506, 1682,  506, 588,  504, 1682,  504, 564,  530, 586,  504, 564,  532, 586,  506, 560,  532, 564,  530, 1680,  506, 586,  508, 1680,  508, 1680,  508, 1678,  508, 1678,  508};  // COOLIX B29FD0

其他非传感器模块的案例

有一些系统的Demo