using multiple TM1637

Hi there, I am almost new to Arduino. I needed some help regarding multiple usage of the 4 digit 7 segment diaplay(TM1637)
The example code from the TM1637 library is given below. What changes are required for using another TM1637 along with it.

#include <Arduino.h>
#include <TM1637Display.h>

// Module connection pins (Digital Pins)
#define CLK 2
#define DIO 3

// The amount of time (in milliseconds) between tests
#define TEST_DELAY 2000

const uint8_t SEG_DONE = {
SEG_B | SEG_C | SEG_D | SEG_E | SEG_G, // d
SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, // O
SEG_C | SEG_E | SEG_G, // n
SEG_A | SEG_D | SEG_E | SEG_F | SEG_G // E
};

TM1637Display display(CLK, DIO);

void setup()
{
}

void loop()
{
int k;
uint8_t data = { 0xff, 0xff, 0xff, 0xff };
display.setBrightness(0x0f);

// All segments on
display.setSegments(data);
delay(TEST_DELAY);

// Selectively set different digits
data[0] = 0b01001001;
data[1] = display.encodeDigit(1);
data[2] = display.encodeDigit(2);
data[3] = display.encodeDigit(3);

for(k = 3; k >= 0; k–) {
display.setSegments(data, 1, k);
delay(TEST_DELAY);
}

display.setSegments(data+2, 2, 2);
delay(TEST_DELAY);

display.setSegments(data+2, 2, 1);
delay(TEST_DELAY);

display.setSegments(data+1, 3, 1);
delay(TEST_DELAY);

// Show decimal numbers with/without leading zeros
bool lz = false;
for (uint8_t z = 0; z < 2; z++) {
for(k = 0; k < 10000; k += k*4 + 7) {
display.showNumberDec(k, lz);
delay(TEST_DELAY);
}
lz = true;
}

// Show decimal number whose length is smaller than 4
for(k = 0; k < 4; k++)
data[k] = 0;
display.setSegments(data);

// Run through all the dots
for(k=0; k <= 4; k++) {
display.showNumberDecEx(0, (0x80 >> k), true);
delay(TEST_DELAY);
}

display.showNumberDec(153, false, 3, 1);
delay(TEST_DELAY);
display.showNumberDec(22, false, 2, 2);
delay(TEST_DELAY);
display.showNumberDec(0, true, 1, 3);
delay(TEST_DELAY);
display.showNumberDec(0, true, 1, 2);
delay(TEST_DELAY);
display.showNumberDec(0, true, 1, 1);
delay(TEST_DELAY);
display.showNumberDec(0, true, 1, 0);
delay(TEST_DELAY);

// Brightness Test
for(k = 0; k < 4; k++)
data[k] = 0xff;
for(k = 0; k < 7; k++) {
display.setBrightness(k);
display.setSegments(data);
delay(TEST_DELAY);
}

// On/Off test
for(k = 0; k < 4; k++) {
display.setBrightness(7, false); // Turn off
display.setSegments(data);
delay(TEST_DELAY);
display.setBrightness(7, true); // Turn on
display.setSegments(data);
delay(TEST_DELAY);
}

// Done!
display.setSegments(SEG_DONE);

while(1);
}

The TM1637 isn't cascadable (AFAIK). You need 2 I/O pins for each one you want to connect. The code above was written with the assumption that you're only controlling one device (as is the code that I wrote). You'll need to modify it to let you specify a clock/data line for each device. Have a look at mine and see if you find it easier to change:

Larry's TM1637 code