//Arduino  

/*
    Arduino 7-Segment LED Display for Common Cathode Displays
    Arduino Pins: 2,3,4,5,6,7,8
    Display Pins: 7,6,4,2,1,9,10
    Display Pins 3&8 should go to GND
    Switch Input is at Pin 9
    Source: http://www.electroschematics.com/9636/arduino-segment-display-counter/
    */
//               0     　　    , 1     　  　   , 2                  , 3                  , 4                  ,
//               5     　 　   , 6    　　      , 7                  , 8                  , 9   
    byte numbers[10] = {
                 B11111100, B01100000, B11011010, B11110010, B01100110,
                 B10110110, B10111110, B11100000, B11111110, B11100110
                        };
    void setup() {
        for(int i = 2; i <= 8; i++) {
            pinMode(i, OUTPUT);
        }
        pinMode(9, INPUT);
    }
    
    int counter = 0;
    bool go_by_switch = true;
    int last_input_value = LOW;
    
    void loop() {
        if(go_by_switch) {
            int switch_input_value = digitalRead(9);
            if(last_input_value == LOW && switch_input_value == HIGH) {
                counter = (counter + 1) % 10;
            }
            last_input_value = switch_input_value;
        } else {
            delay(500);
            counter = (counter + 1) % 10;
        }
        writeNumber(counter);
    }
    
    void writeNumber(int number) {
        if(number < 0 || number > 9) {
            return;
        }
        byte mask = numbers[number];
        byte currentPinMask = B10000000;
        for(int i = 2; i <= 8; i++) {
//            if(mask & currentPinMask) digitalWrite(i,HIGH); //カソードコモンタイプ7セグメント
//            else digitalWrite(i,LOW);                       //カソードコモンタイプ7セグメント
            if(mask & currentPinMask) digitalWrite(i,LOW);    //アノードコモンタイプ7セグメント
            else digitalWrite(i,HIGH);                        //アノードコモンタイプ7セグメント
        currentPinMask = currentPinMask >> 1;
        }
    }

//Arduino用

//サンプル　スケッチ

const int strobe = 7;
const int clock = 9;
const int data = 8;

void sendCommand(uint8_t value)
{
  digitalWrite(strobe, LOW);
  shiftOut(data, clock, LSBFIRST, value);
  digitalWrite(strobe, HIGH);
}

void reset()
{
  sendCommand(0x40); // set auto increment mode
  digitalWrite(strobe, LOW);
  shiftOut(data, clock, LSBFIRST, 0xc0);   // set starting address to 0
  for(uint8_t i = 0; i < 16; i++)
  {
    shiftOut(data, clock, LSBFIRST, 0x00);
  }
  digitalWrite(strobe, HIGH);
}

void setup()
{
  pinMode(strobe, OUTPUT);
  pinMode(clock, OUTPUT);
  pinMode(data, OUTPUT);

  sendCommand(0x8f);  // activate
  reset();
}


#define COUNTING_MODE 0
#define SCROLL_MODE 1
#define BUTTON_MODE 2

void loop()
{
  static uint8_t mode = COUNTING_MODE;

  switch(mode)
  {
  case COUNTING_MODE:
    mode += counting();
    break;
  case SCROLL_MODE:
    mode += scroll();
    break;
  case BUTTON_MODE:
    buttons();
    break;
  }

  delay(200);
}

bool counting()
{
                       /*0*/ /*1*/ /*2*/ /*3*/ /*4*/ /*5*/ /*6*/ /*7*/ /*8*/ /*9*/
  uint8_t digits[] = { 0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f };

  static uint8_t digit = 0;

  sendCommand(0x40);
  digitalWrite(strobe, LOW);
  shiftOut(data, clock, LSBFIRST, 0xc0);
  for(uint8_t position = 0; position < 8; position++)
  {
    shiftOut(data, clock, LSBFIRST, digits[digit]);
    shiftOut(data, clock, LSBFIRST, 0x00);
  }

  digitalWrite(strobe, HIGH);

  digit = ++digit % 10;
  return digit == 0;
}

bool scroll()
{
  uint8_t scrollText[] =
  {
    /* */ /* */ /* */ /* */ /* */ /* */ /* */ /* */
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    /*H*/ /*E*/ /*L*/ /*L*/ /*O*/ /*.*/ /*.*/ /*.*/
    0x76, 0x79, 0x38, 0x38, 0x3f, 0x80, 0x80, 0x80,
    /* */ /* */ /* */ /* */ /* */ /* */ /* */ /* */
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    /*H*/ /*E*/ /*L*/ /*L*/ /*O*/ /*.*/ /*.*/ /*.*/
    0x76, 0x79, 0x38, 0x38, 0x3f, 0x80, 0x80, 0x80,
  };

  static uint8_t index = 0;
  uint8_t scrollLength = sizeof(scrollText);

  sendCommand(0x40);
  digitalWrite(strobe, LOW);
  shiftOut(data, clock, LSBFIRST, 0xc0);

  for(int i = 0; i < 8; i++)
  {
    uint8_t c = scrollText[(index + i) % scrollLength];

    shiftOut(data, clock, LSBFIRST, c);
    shiftOut(data, clock, LSBFIRST, c != 0 ? 1 : 0);
  }

  digitalWrite(strobe, HIGH);

  index = ++index % (scrollLength << 1);

  return index == 0;
}

void buttons()
{
  uint8_t promptText[] =
  {
    /*P*/ /*r*/ /*E*/ /*S*/ /*S*/ /* */ /* */ /* */
    0x73, 0x50, 0x79, 0x6d, 0x6d, 0x00, 0x00, 0x00,
    /* */ /* */ /* */ /* */ /* */ /* */ /* */ /* */
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    /*b*/ /*u*/ /*t*/ /*t*/ /*o*/ /*n*/ /*S*/ /* */
    0x7c, 0x1c, 0x78, 0x78, 0x5c, 0x54, 0x6d, 0x00,
    /* */ /* */ /* */ /* */ /* */ /* */ /* */ /* */
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  };

  static uint8_t block = 0;

  uint8_t textStartPos = (block / 4) << 3;
  for(uint8_t position = 0; position < 8; position++)
  {
    sendCommand(0x44);
    digitalWrite(strobe, LOW);
    shiftOut(data, clock, LSBFIRST, 0xC0 + (position << 1));
    shiftOut(data, clock, LSBFIRST, promptText[textStartPos + position]);
    digitalWrite(strobe, HIGH);
  }

  block = (block + 1) % 16;

  uint8_t buttons = readButtons();

  for(uint8_t position = 0; position < 8; position++)
  {
    uint8_t mask = 0x1 << position;

    setLed(buttons & mask ? 1 : 0, position);
  }
}

uint8_t readButtons(void)
{
  uint8_t buttons = 0;
  digitalWrite(strobe, LOW);
  shiftOut(data, clock, LSBFIRST, 0x42);

  pinMode(data, INPUT);

  for (uint8_t i = 0; i < 4; i++)
  {
    uint8_t v = shiftIn(data, clock, LSBFIRST) << i;
    buttons |= v;
  }

  pinMode(data, OUTPUT);
  digitalWrite(strobe, HIGH);
  return buttons;
}

void setLed(uint8_t value, uint8_t position)
{
  pinMode(data, OUTPUT);

  sendCommand(0x44);
  digitalWrite(strobe, LOW);
  shiftOut(data, clock, LSBFIRST, 0xC1 + (position << 1));
  shiftOut(data, clock, LSBFIRST, value);
  digitalWrite(strobe, HIGH);
}

TM1638 Library

https://github.com/rjbatista/tm1638-library

#include <TM1638.h>
//TM1638 module(DIO, CLK, STB);
TM1638 module(8, 9, 7);

void setup()
{
  module.setDisplayToDecNumber(12345678,0,false);  //数値
  delay(3000);      //表示   12345678

  module.setDisplayToDecNumber(12345678,1,false);  //0は小数点なし、1は最後に小数点、2は最後から2番目に小数点、・・・、128は小数点最後から8番目に小数点を点灯する。　3の場合最後と2番目が点灯する。

//例(12345678,8,false);の場合は、 12345.678と表示される
  delay(3000);      //表示   12345678.

 module.setDisplayToDecNumber(1234.5678,1,true);  //trueは前を0で埋める

  delay(3000);      //表示   00001234.    //小数点以下は表示されない

 module.setDisplayToDecNumber(1234.5678,1,false);  //falseは前を0で埋めない

  delay(3000);      //表示             1234.    //小数点以下は表示されない

  module.setDisplayToHexNumber(0x9abcdef0,0,false);  //16進数値
  delay(3000);      //表示   9AbCdEF0

  module.setDisplayToBinNumber(0b00001010,0);  //2進数値
  delay(3000);       //表示   00001010

  //7SEGでは文字が特殊で読めない or 見にくい
  module.setDisplayToString("abcdefgh");
  delay(5000);       //表示   abcde「9h

  module.setDisplayToString("ijklmnop");
  delay(5000);     //表示:  特殊フォントのため表示不可   

  module.setDisplayToString("qrstuvwx");
  delay(5000);    //表示:  特殊フォントのため表示不可

  module.clearDisplay();

  module.setDisplayToString("yz");
  delay(3000);  //表示: y2

  module.setDisplayToString("ABCDEFGH"); 
  delay(5000);       //表示   A8C0EFGH

  module.setDisplayToString("IJKLMNOP"); 
  delay(5000);

  module.setDisplayToString("QRSTUVWX"); 
  delay(5000);

  module.clearDisplay();

  module.setDisplayToString("YZ"); 
  delay(3000); 

  module.setDisplayToString("12.30"); 
  delay(5000);       //表示   12.30

  module.setDisplayToString("01."  "30"  "30"); 
  delay(5000);       //表示   01.3030
 

module.clearDisplay();
  }
 
void loop()
{
}

点灯セグメント　数値

             A             1

             B             2

             C             4

             D             8

             E             16

             F             32

             G            64

            DP          128

スケッチ

#include <TM1638.h>
// define a module on data pin 8, clock pin 9 and strobe pin 7
TM1638 module(8, 9, 7);

byte values[] = { 1, 2, 4, 8, 16, 32, 64, 128 };
 //セグメント表示  A, B, C, D,  E,  F,  G,  DP
void setup(){
  module.setDisplay(values);
  }

void loop(){}

#include <TM1638.h>
// define a module on data pin 8, clock pin 9 and strobe pin 7
TM1638 module(8, 9, 7);

byte values[] = { 121, 73, 79, 33, 12, 57, 9, 15 };
 //セグメント表示    A,    B,   C,   D,   E,   F,  G,  DP

void setup(){
  module.setDisplay(values);
  }

void loop(){}

//Arduino

#include <Keypad.h>

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

//connect to the row pinouts of the keypad 行
byte rowPins[ROWS] = {9, 8, 7, 6};
//                   L1,L2,L3,L4
//connect to the column pinouts of the keypad 桁
byte colPins[COLS] = {5, 4, 3, 2};
//                   R1,R2,R3,R4

//initialize an instance of class NewKeypad
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

void setup(){
  Serial.begin(9600);
}
 
void loop(){
  char customKey = customKeypad.getKey();
 
  if (customKey){
    Serial.println(customKey);
  }
}

//Arduino

// adafruit_DHT-sensor_library付属のサンプルスケッチ

#include "DHT.h"

#define DHTPIN 2     // what digital pin we're connected to

#define DHTTYPE DHT11   // DHT 11

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);

  dht.begin();
}

void loop() {
  delay(2000);

  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print("Humidity: ");
  Serial.print(h);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print(" *C ");
  Serial.print(f);
  Serial.print(" *F\t");
  Serial.print("Heat index: ");
  Serial.print(hic);
  Serial.print(" *C ");
  Serial.print(hif);
  Serial.println(" *F");
}

//shield.h
#define D0 dp15
#define D1 dp16
#define D2 dp17
#define D3 dp18
#define D4 dp26
#define D5 dp24
#define D6 dp28
#define D7 dp13
#define D8 dp14
#define D9 dp25
//#define D10 dp1
#define D11 dp2
#define D12 dp1
#define D13 dp6

#define D14 A0
#define D15 A1
#define D16 A2
#define D17 A3
//#define D18 SDA
//#define D19 SCL

#define A0 dp4
#define A1 dp9
#define A2 dp10
#define A3 dp11
#define SDA dp5
#define SCL dp27

#define PWM0 D10
#define PWM1 D11
#define PWM2 D5
#define PWM3 D3
//#define PWM4 ??
//#define PWM5 ??

#define RX D0
#define TX D1
//#define ARD_SDA p9
//#define ARD_SCL p10
#define MOSI D11
#define MISO D10
#define SCK D13

#define SERIAL_TX D1
#define SERIAL_RX D0