UNIT-Digi-Clock

SKU:U146

Description

UNIT-Digi-Clock is a 2.1 inch 4-digit 7-segment display module. There are decimal points on each digit and an extra wire for colon-dots in the center, which can display Decimals and Clock. This module adopts TM1637 as the driver IC, and STM32F030 as I2C communication. I2C address can be modified per 4-bit dip switch. The red LED supports 8 brightness. And we have reserved 4 fixing holes there.

Features

• 4-digit red dislpay
• I2C port, adjustable I2C address
• 8 brightness
• Low power consumption
• 4 fixing holes for multiple installations

Includes

• 1x UNIT-Digi-Clock
• 1x HY2.0-4P Cable (20cm)

Application

• Clock display
• Data display
• Stop watch

Specifications

Power Consumption Testing

Schematic

I2C Register Table

Character cross-reference table

Related Link

• Datasheet
  • TM1637

Examples

Arduino

• M5Unit-Digi_Clock Lib

#include "Wire.h"
#include "M5UNIT_DIGI_CLOCK.h"

/* For M5Stack Basic */
#define SDA 21
#define SCL 22
#define ADD 0x30

/* For M5Atom Lite/Matrix */
// #define SDA 26
// #define SCL 32
// #define ADD 0x30

M5UNIT_DIGI_CLOCK Digiclock;

void setup() 
{
    delay(2000);
    Serial.begin(115200);
    Wire.begin(SDA, SCL);

    /* Digital clock init */
    if (Digiclock.begin(&Wire, SDA, SCL, ADD)) 
    {
        Serial.println("Digital clock init successful");
    } 
    else 
    {
        Serial.println("Digital clock init error");
        while (1);
    }
    char buff[] = "    ";
    Digiclock.setString(buff);
    delay(2000);
}

void loop() 
{
    char buff[] = "8.8.:8.8.";
    Digiclock.setString(buff);

    for (int i = 0; i < 5; i++) 
    {
        Digiclock.setBrightness(9);
        delay(150);
        Digiclock.setBrightness(0);
        delay(150);
    }
    delay(100);

    for (int i = 0; i < 4; i++) 
    {
        for (uint8_t i = 0; i < 9; i++) 
        {
            Digiclock.setBrightness(i);
            delay(20);
        }
        for (uint8_t i = 8; i > 0; i--) 
        {
            Digiclock.setBrightness(i);
            delay(20);
        }
    }
    delay(100);

    Digiclock.setBrightness(9);
    for (int j = 0; j < 3; j++) 
    {
        for (int i = 0; i < 10; i++) 
        {
            sprintf(buff, "%d.%d.:%d.%d.", i, i, i, i);
            Digiclock.setString(buff);
            Serial.println(buff);
            delay(200);
        }
    }
    delay(100);

    Digiclock.setBrightness(9);
    for (;;) 
    {
        char buff2[] =  "12:00";
        Digiclock.setString(buff2);
        Serial.printf(buff2);
        delay(1000);
        char buff3[] =  "1200";
        Digiclock.setString(buff3);
        Serial.printf(buff3);
        delay(1000);
    }
    delay(100);
}

UIFlow