Grisha Anofriev
Published

Arduino Clock on IN-18 Nixie Tubes NCS318 LONG Service Life

Build your own Nixie tube clock/thermometer/display with ease.

IntermediateFull instructions provided3 hours30,294
Arduino Clock on IN-18 Nixie Tubes NCS318 LONG Service Life

Things used in this project

Story

Read more

Schematics

Arduino Nixie Clock Shield NCS318

Electrical Scheme

Code

The sample show how to display 123456 on IN-18 tubes

Arduino
//NIXIE CLOCK SHIELD NCS318 v 1.x by GRA & AFCH (fominalec@gmail.com)
//26.06.2019
//Simple code for HV5122PJ-G Hihg Voltage registers
//This code show 123456 and then (after 3 seconds) 654321
 
#include <SPI.h>

const byte LEpin=10; //pin Latch Enabled data accepted while HI level

String stringToDisplay="000000";// Conten of this string will be displayed on tubes (must be 6 chars length)

//                            0      1      2      3      4      5      6      7      8       9
unsigned int SymbolArray[10]={1,     2,     4,     8,     16,    32,    64,    128,   256,    512};


/*******************************************************************************************************
Init Programm
*******************************************************************************************************/
void setup() 
{
 
  Serial.begin(115200);
  Serial.println(F("Starting"));
  
  pinMode(LEpin, OUTPUT);

 // SPI setup
  SPI.begin(); // 
  SPI.setDataMode (SPI_MODE2); // Mode 2 SPI
  SPI.setClockDivider(SPI_CLOCK_DIV8); // SCK = 16MHz/8= 2MHz
}

/***************************************************************************************************************
MAIN Programm
***************************************************************************************************************/
void loop() {
  stringToDisplay="123456";
  Serial.println(stringToDisplay);
  doIndication();
  delay(3000);
  stringToDisplay="654321";
  Serial.println(stringToDisplay);
  doIndication();
  delay(3000);
}

void doIndication()
{
  digitalWrite(LEpin, LOW);    // allow data input (Transparent mode)
  unsigned long Var32=0;
   
  long digits=stringToDisplay.toInt();
  
  //-------- REG 1 ----------------------------------------------- 
  Var32=0;
 
  Var32|=(unsigned long)(SymbolArray[digits%10])<<20; // s2
  digits=digits/10;

  Var32|=(unsigned long)(SymbolArray[digits%10])<<10; //s1
  digits=digits/10;

  Var32|=(unsigned long) (SymbolArray[digits%10]); //m2
  digits=digits/10;

  SPI.transfer(Var32>>24);
  SPI.transfer(Var32>>16);
  SPI.transfer(Var32>>8);
  SPI.transfer(Var32);

 //-------------------------------------------------------------------------

 //-------- REG 0 ----------------------------------------------- 
  Var32=0;
  
  Var32|=(unsigned long)(SymbolArray[digits%10])<<20; // m1
  digits=digits/10;

  Var32|= (unsigned long)(SymbolArray[digits%10])<<10; //h2
  digits=digits/10;

  Var32|= (unsigned long)SymbolArray[digits%10]; //h1
  digits=digits/10;

  SPI.transfer(Var32>>24);
  SPI.transfer(Var32>>16);
  SPI.transfer(Var32>>8);
  SPI.transfer(Var32);

  digitalWrite(LEpin, HIGH);     // latching data 
}

Credits

Grisha Anofriev

Grisha Anofriev

6 projects • 36 followers

Comments