萬能學習型遙控器57# IC:SJ-018+24C16

純備份用-"這只不錯用 !"

一、將學習型遙控器與被複製遙控器發射頭相對齊放好

二、用筆或牙籤戳住學習遙控器[SET]孔、直到LED燈號持續亮起後放開

三、按一下想要學習的按鍵[電源]，則LED燈將更亮

四、按住被複製遙控器的[電源]，直到學習型LED燈閃爍三下後放開，
　　　則學習拷貝完成。

五、戳一下[SET]孔，燈滅即設定完成

Debian8安裝無線網卡

ubuntu太胖,acer aspire T-300跑太動,索性利用假日重裝debian8 lxde
可是bcm4306一直跑不起來,jessie內建的wicd對無線網卡不太友好,
即使移除wicd,使用network-manager-gnome還是無法從gui去設定ssid及pw
記錄一下text mode的連線過程

dmesg | grep Network
lspci --nn
確認網卡
apt-get install firmware-b43-installer
apt-get remove wicd
apt-get install network-manager-gnmoe
還是無解,雖然wlan0有on起來
iwlist wlan0 scan
手改wlan0的dhcp及ssid/pw
vi /etc/network/interfaces
  auto wlan0 
  iface wlan0 inet dhcp
    wpa-ssid "APNAME"
    wpa-psk "PW"





/etc/init.d/networking restart
這樣才搞定! 累~~~

另外jessie中文字型的安裝也不同 ttf改成fonts
 ex. ttf-arphic-uming --> fonts-arphic-uming

PAM8403

這個CHIP真的很厲害,小小一片,加組4歐姆3瓦的喇叭及USB電源即可達成一組電腦音箱,便宜又好用.難怪無線音源用它來推就對了!

DS1302_DS18x20_DHT11_2004LCD

溫度,濕度再加上時間,本想再加上SD卡,使它有Datalogger的功能,無耐與I2CLCD的libraries相衝吧?

#include "stdio.h"
#include "DS1302.h"
#include "OneWire.h"
#include "DallasTemperature.h"
#include "Wire.h"
#include "LiquidCrystal_I2C.h"
#include "dht.h"

#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

LiquidCrystal_I2C lcd(0x3f,20,4);
dht DHT;
#define DHT11_PIN 3

namespace {

const int kCePin   = 5;  // Chip Enable
const int kIoPin   = 6;  // Input/Output
const int kSclkPin = 7;  // Serial Clock

DS1302 rtc(kCePin, kIoPin, kSclkPin);

String dayAsString(const Time::Day day) {
  switch (day) {
    case Time::kSunday: return "Sunday";
    case Time::kMonday: return "Monday";
    case Time::kTuesday: return "Tuesday";
    case Time::kWednesday: return "Wednesday";
    case Time::kThursday: return "Thursday";
    case Time::kFriday: return "Friday";
    case Time::kSaturday: return "Saturday";
  }
  return "(unknown day)";
}
void printTime() {
  // Get the current time and date from the chip.
  Time t = rtc.time();

  // Name the day of the week.
  const String day = dayAsString(t.day);

  // Format the time and date and insert into the temporary buffer.
  char buf[50];
  snprintf(buf, sizeof(buf), "%s %04d-%02d-%02d %02d:%02d:%02d",
           day.c_str(),
           t.yr, t.mon, t.date,
           t.hr, t.min, t.sec);

  // Print the formatted string to serial so we can see the time.
  Serial.println(buf);
 }
}  // namespace

void setup(void)
{
  // start serial port
  Serial.begin(9600);
  //Serial.println("Dallas Temperature IC Control Library");

  // Start up the library
  sensors.begin();

  lcd.init();
  lcd.backlight();
  //lcd.print("Room Temperature");
}

void loop(void)
{
  printTime();
  lcd.setCursor(0,0);
  Time t = rtc.time();
  char buf[50];
  snprintf(buf, sizeof(buf), "%04d-%02d-%02d %02d:%02d:%02d",
           t.yr, t.mon, t.date,
           t.hr, t.min, t.sec);
  //Serial.println(buf);
  lcd.print(buf);
  //Serial.print("Requesting temperatures...");
  //sensors.requestTemperatures();
  //Serial.println("DONE");
  Serial.print("Temperature for the device 1 (index 0) is: ");
  Serial.println(sensors.getTempCByIndex(0));
  Serial.print("Temperature for the device 2 (index 1) is: ");
  Serial.println(sensors.getTempCByIndex(1));
  lcd.setCursor(0,1);
  lcd.print("DS18S20 A: ");
  lcd.print(sensors.getTempCByIndex(0));
  lcd.print("C");
  lcd.setCursor(0,2);
  lcd.print("DS18B20 B: ");
  lcd.print(sensors.getTempCByIndex(1));
  lcd.print("C");
  int chk = DHT.read11(DHT11_PIN);
  switch (chk)
  delay(1000);
  Serial.println(DHT.humidity, 1);
  Serial.println(DHT.temperature, 1);
  lcd.setCursor(0,3);
  lcd.print("DHT11:  ");
  lcd.print(DHT.humidity, 0);
  lcd.print("%  ");
  // lcd.print("Temp: ");
  lcd.print(DHT.temperature,0);
  lcd.print("C");
  delay(1000);
}

ESP8266

SG90+Joystick module

#include "Servo.h"

Servo myservo;  // create servo object to control a servo

int potpin = 0;  // analog pin used to connect the potentiometer
int val;    // variable to read the value from the analog pin

void setup()
{
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object
}

void loop()
{
  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023)
  val = map(val, 0, 1023, 0, 180);     // scale it to use it with the servo (value between 0 and 180)
  myservo.write(val);                  // sets the servo position according to the scaled value
  delay(15);                           // waits for the servo to get there
}

BMP180+DS18x20+DCcduino_LCD2004A

DCcduino  這塊山寨版UNO剛好滿足我不喜歡用麵包板的特性，擴充各兩組5V及3.3V的接點
這次連接I2C LCD 及BMP180和DS18B20，沒有須增加電源的問題。

#include "SFE_BMP180.h"
#include "Wire.h"
#include "LiquidCrystal_I2C.h"
#include "OneWire.h"
#include "DallasTemperature.h"

SFE_BMP180 pressure;

#define ALTITUDE 1655.0

LiquidCrystal_I2C lcd(0x3f,20,4);

#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

void setup()
{
  lcd.init();
  lcd.backlight();
  lcd.print("BMP180 Demo");

  Serial.begin(9600);
  Serial.println("REBOOT");

  if (pressure.begin())
    Serial.println("BMP180 init success");
  else
  {

    Serial.println("BMP180 init fail\n\n");
    while(1); // Pause forever.
  }

sensors.begin();

}



void loop()
{
  char status;
  double T,P,p0,a;

  Serial.println();
  Serial.print("provided altitude: ");
  Serial.print(ALTITUDE,0);
  Serial.print(" meters, ");
  Serial.print(ALTITUDE*3.28084,0);
  Serial.println(" feet");

  status = pressure.startTemperature();
  if (status != 0)
  {
   
    delay(status);

    status = pressure.getTemperature(T);
    if (status != 0)
    {

      Serial.print("temperature: ");
      Serial.print(T,2);
      Serial.print(" deg C, ");
      Serial.print((9.0/5.0)*T+32.0,2);
      Serial.println(" deg F");
   
      status = pressure.startPressure(3);
      if (status != 0)
      {

        delay(status);

        status = pressure.getPressure(P,T);
        if (status != 0)
        {
     
          Serial.print("absolute pressure: ");
          Serial.print(P,2);
          Serial.print(" mb, ");
          Serial.print(P*0.0295333727,2);
          Serial.println(" inHg");
     
          p0 = pressure.sealevel(P,ALTITUDE);
          Serial.print("relative (sea-level) pressure: ");
          Serial.print(p0,2);
          Serial.print(" mb, ");
          Serial.print(p0*0.0295333727,2);
          Serial.println(" inHg");

          a = pressure.altitude(P,p0);
          Serial.print("computed altitude: ");
          Serial.print(a,0);
          Serial.print(" meters, ");
          Serial.print(a*3.28084,0);
          Serial.println(" feet");
        }
        else Serial.println("error retrieving pressure measurement\n");
      }
      else Serial.println("error starting pressure measurement\n");
    }
    else Serial.println("error retrieving temperature measurement\n");
  }
  else Serial.println("error starting temperature measurement\n");

 sensors.requestTemperatures();

  lcd.setCursor(0,1);
  lcd.print(T,2);
  lcd.print("C ");
  lcd.print(P,2);
  lcd.print("mb ");
  lcd.setCursor(0,2);
  lcd.print(a,0);
  lcd.print("M ");
  lcd.print(p0,2);
  lcd.print("mb ");
  lcd.setCursor(0,3);
  lcd.print(sensors.getTempCByIndex(0));
  lcd.print("C ");
  lcd.print(sensors.getTempCByIndex(1));
  lcd.print("C ");

  Serial.print("Ds18s20");
  Serial.print(",");
   Serial.print(sensors.getTempCByIndex(0));
  Serial.print(",");
   Serial.print("Ds18b20");
  Serial.print(",");
  Serial.print(sensors.getTempCByIndex(1));
  Serial.println(",");

   
      // Serial.print("temperature: ");
     // Serial.print(T,2);
     // Serial.print(" deg C, ");
     // Serial.print((9.0/5.0)*T+32.0,2);
     // Serial.println(" deg F");

  delay(2000);
}