Dangerous Prototypes Open Source Hardware

#include <SPI.h>

const int slaveSelectPin = SS;
const char DISP[16] {0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, 0x77, 0x7c, 0x58, 0x5e, 0x79, 0x71};

void setup() {
  pinMode (slaveSelectPin, OUTPUT);
  SPI.begin(); 
  SPI.setBitOrder(LSBFIRST); 
  SPI.setDataMode(SPI_MODE2);
}

void loop() {
  //set display to 6x12 segments
  digitalWrite(slaveSelectPin,LOW);
  SPI.transfer(0x02);
  digitalWrite(slaveSelectPin,HIGH); 
  
  //set to writing mode, auto incrament address after data write
  digitalWrite(slaveSelectPin,LOW);
  SPI.transfer(0x40);
  digitalWrite(slaveSelectPin,HIGH);
  
  //first clear 8 bytes of the display RAM
  digitalWrite(slaveSelectPin,LOW);
  SPI.transfer(0xC0);
  for(int i=0; i<8; i++){
      SPI.transfer(0x00);
  }
  digitalWrite(slaveSelectPin,HIGH); 
  
  //display on, max brightness
  digitalWrite(slaveSelectPin,LOW);
  SPI.transfer(0x8F);
  digitalWrite(slaveSelectPin,HIGH); 
  
  //count through 0-9,a-f
  for(int i=0; i<16; i++){
      digitalWrite(slaveSelectPin,LOW);
      SPI.transfer(0xC0);
      SPI.transfer(DISP[i]);
      digitalWrite(slaveSelectPin,HIGH); 
      delay(500);
  }
}

    #include "TM1638.h"// yes you need both
    #include "TM1640.h"
     
    // define a module on data pin 7, clock pin 8
    TM1640 module(1,0,1,0);
     
    void setup()
    {
     // nothing to do here
    }
     
    void loop()
    {
     String name = "1111222233334444";
     module.setDisplayToString(name, 0b0000000000000000);
     delay(100);
    }

 -- 0 --
|       |
5       1
 -- 6 --
4       2
|       |
 -- 3 --  .7

#include <TM1638.h>
#include <TM1640.h>

TM1640 module(1,0,1,0); // define a module on data pin 3, clock pin 2

const long MAX = 100000000; // upper limit on displaying 8 digits
char buffer[16 + 1]; // our display buffer
long hi; // counter for left-most 8 digits; higher part of counter
long lo; // counter for right-most 8 digits; lower part of counter

void setup() {
  module.setupDisplay(true, 1);
  lo = MAX - 1000;  // interesting start value
  hi = MAX - 1; // another interesting start value
}

void loop() {
  lo += 123456; // increment lower part of the counter

  if (lo == MAX) { // have we overflowed the lower part of the counter?
    lo = 0; // reset lower to zero
    ++hi; // increment high part

    if (hi == MAX) { // have we overflowed the higher part of the counter?
      lo = 0; 
      hi = 0;
    }
  }

  if (hi == 0) { // if nothing in high part, left pad display with eight spaces
    sprintf(buffer, "        %8ld", lo);
  } 
  else {
    sprintf(buffer, "%8ld%08ld", hi, lo);
  }

  module.setDisplayToString(buffer);
}

{
  sendCommand(0x44);
  digitalWrite(strobePin, LOW);
  send(0xC0 | address);
  send(data);
  digitalWrite(strobePin, HIGH);
}