FEATURES & COMPONENTS.

  • Compatible with 5V/3.3V boards – Arduino Nano, Nano Every, Nano 33 IoT and Particle Photon
  • Replaceable IN-2 nixie tubes – pin socket connectors
  • Modular design
  • RTC real time clock DS3231 module on board
  • Nixie power supply module 170V (fully assembled) included
  • 2 x Nixie Tube Driver V2 (fully assembled) – on board
  • Designed to work with DHT22/DHT11 temperature & humidity sensor
  • Assembled all SMD components
  • Connectors, pin headers and nixie tubes sockets require soldering
  • Dimensions with tubes: 60 x 108 x 167 mm (~2.4″ x  4.3″ x 6.6″)
  • External power supply required (Arduino Vin connector): 12V; 1A DC; plug diameter 2.5 x 5.5 mm; center pin positive+

HOW IT'S MADE.

The modular design allows easy and quick assembly. Individual modules are placed in specific slots.

BINARY CODE.

Binary code is a base 2 number system invented by Gottfried Leibniz where numeric values are represented by different combinations of 0 and 1, also know as OFF or ON. Is the simplest form of computer code or programming data.

SCHEMATIC.

CODING.

The program code has been prepared:

DATASHEET.

Datasheet can be found on GitHub repository.

CODE EXPAMPLES.

// IN-2 Binary Nixie Clock by Marcin Saj https://nixietester.com
// https://github.com/marcinsaj/IN2-Binary-Nixie-Clock
//
// Classic IN-2 Binary Nixie Clock Example
//
// This example demonstrates how to set the RTC time, read time from RTC and display on nixie tubes.
// Serial monitor is required to display basic options.
//
// Hardware:
// IN-2 Binary Nixie Clock - https://nixietester.com/project/in-2-binary-nixie-clock/
// Arduino Nano - https://store.arduino.cc/arduino-nano
// Or Arduino Nano Every - https://store.arduino.cc/arduino-nano-every
// Or Arduino Nano IoT 33 - https://store.arduino.cc/arduino-nano-33-iot
// Nixie Power Supply Module, 2 x Nixie Tube Driver V2 & RTC DS3231 module
// Nixie clock require 12V, 1A power supply
// Schematic IN-2 Binary Nixie Clock - http://bit.ly/IN2-BNC-Schematic
// Schematic Nixie Tube Driver V2 - http://bit.ly/NTD-Schematic
// Schematic Nixie Power Supply Module - http://bit.ly/NPS-Schematic
// DS3231 RTC datasheet: https://datasheets.maximintegrated.com/en/ds/DS3231.pdf

#include            // https://github.com/adafruit/RTClib

#define EN_NPS    A3          // Nixie Power Supply enable pin - "ON" = 0, "OFF" = 1 
#define DIN_PIN   A2          // Nixie driver (shift register) serial data input pin             
#define CLK_PIN   A1          // Nixie driver clock input pin
#define EN_PIN    A0          // Nixie driver enable input pin

// Choose Time Format
#define HH        24          // 12 Hour Clock or 24 Hour Clock

// Bit numbers declaration for nixie tubes display
//           32  16   8   4   2   1
byte H1[] = {26, 24, 45, 15, 17, 12};     // "1" Hours
byte H0[] = {27, 25, 44, 14, 16, 13};     // "0" Hours
byte M1[] = {34, 28, 43, 19, 10,  8};     // "1" Minutes
byte M0[] = {35, 29, 42, 18, 11,  9};     // "0" Minutes
byte S1[] = {36, 39, 41, 21,  2,  0};     // "1" Seconds
byte S0[] = {37, 38, 40, 20,  3,  1};     // "0" Seconds

// 18 bits for "1", 18 bits for "0" - check clock schematic
// 8 bits for gaps - nixie drivers not connected outputs 
// 2 bits for nixie driver gaps - check driver schematic 

// Nixie Display bit array
boolean nixieBitArray[46]; 

// Serial monitor state
boolean serialState = 0;

// Millis delay time variable 
unsigned long previous_millis = 0;

// RTC library declaration
RTC_DS3231 rtc;


void setup() 
{      
  Serial.begin(9600);
  rtc.begin();    
  delay(3000);

  pinMode(EN_NPS, OUTPUT);
  digitalWrite(EN_NPS, HIGH);   // Turn OFF nixie power supply module 

  pinMode(DIN_PIN, OUTPUT);
  digitalWrite(DIN_PIN, LOW);  
    
  pinMode(CLK_PIN, OUTPUT);
  digitalWrite(CLK_PIN, LOW);         
  
  pinMode(EN_PIN, OUTPUT);
  digitalWrite(EN_PIN, LOW);

  Serial.println("#############################################################");
 Serial.println(...
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