ARDUINO DIGITAL CLOCK USING DS1307 RTC AND MAX7219 8x8 LED MATRIX DISPLAY. 

Hello, did you consider to use a more modern DS3232 ?

Your program code and diagram is perfect but display in my 8x32 matrix hour is appearing again in fourth matrix, even in 8x64 size, is there any issue in font size. please suggest the way out.

Hey! Can i extand the led matrix? And is the display of the number was still like using 1 matrix or get bigger? Thanks [Edit: Oh yeah also, can i remove the resistor from the circuit? Cause i think i dont have any resistor]

I can't believe it doesn't work with me. I've used 3 Arduino Uno boards + 2 Arduino Nano boards to test; the sketch is loaded normally, but after loading the sketch, sometimes it shows something on the display and sometimes it doesn't show anything. Sometimes it shows only the hour and minutes and sometimes it shows everything! The connections I made were all correct and my Arduino boards and my Matrix Displays are all working, because, I tested with other Arduino code. Something in the code is strange! Or can they be my boards? Help me to solve the problem!

help : Font_Data.h: No such file or directory

how to add font library? I already tried it but the Arduino Ide show the library zip doesnt contain library. Please help me

can we use arduino nano please

I cant upload in nano.. Data shows over 31kb? Pls asist me to resolve it

Quando carico il codice si ferma sulla riga : psz[len] = ' ' ; come mai

Help me, use me libarary know ?

How can i change the size?

Hi MYTECTUTOR. I believe your code is working perfectly, but with me, when I upload the Arduino sketch via USB cable, the Matrix works perfectly; After I unplug the USB cable and plug it back into the PC, I have to press the Arduino Reset button several times for the sketch to work again. Any tips or suggestions? Thank you

I found an error in the code, the letter "g" is missing in the code!

hi, can you help me to solve this error. I uploaded your sketch: "numeric7Se' was not declared in this scope"

Why did you use Resistors on buttons and you declared INPUT_PULLUP on pinMode 3, 4 and 5? Wouldn't it be unnecessary?

I cant open the link :(

Quando carico il codice si ferma sulla riga : psz[len] = ' ' ; help

I'm not finding the source.h

error Font_Data.h: No such file or directory

How to download Font_Data.h

Font_Data error no such file or directory

Hello tried to upload the code but have error on line#85: psz[len] = ' '; The error says: "Compilation error: empty character constant" What could this error be? Thank you

Error compiling for arduino Uno/Nano & others board

NEED CIRCUIT PLEASE

Not working code

Arduino: 1.8.14 Hourly Build 2020/07/23 04:33 (Windows 10), Board: "Arduino Uno" C:\Users\prase\Documents\Arduino\libraries\MD_Parola\src\MD_Parola.cpp: In member function 'void MD_Parola::begin(uint8_t)': C:\Users\prase\Documents\Arduino\libraries\MD_Parola\src\MD_Parola.cpp:63:18: error: call of overloaded 'setSpeed(int, int)' is ambiguous setSpeed(10, 10); ^ In file included from C:\Users\prase\Documents\Arduino\libraries\MD_Parola\src\MD_Parola.cpp:23:0: C:\Users\prase\Documents\Arduino\libraries\MD_Parola\src/MD_Parola.h:1752:15: note: candidate: void MD_Parola::setSpeed(uint16_t, uint16_t) inline void setSpeed(uint16_t speedIn, uint16_t speedOut) { for (uint8_t i = 0; i < _numZones; i++) _Z[i].setSpeed(speedIn, speedOut); } ^~~~~~~~ C:\Users\prase\Documents\Arduino\libraries\MD_Parola\src/MD_Parola.h:1763:15: note: candidate: void MD_Parola::setSpeed(uint8_t, uint16_t) inline void setSpeed(uint8_t z, uint16_t speed) { if (z < _numZones) _Z[z].setSpeed(speed); } ^~~~~~~~ Multiple libraries were found for "MD_Parola.h" Used: C:\Users\prase\Documents\Arduino\libraries\MD_Parola Not used: C:\Users\prase\Documents\Arduino\libraries\MD_Parola-master exit status 1 Error compiling for board Arduino Uno. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

CODE NOT WORKING

code lỗi

Clock_with_LED_Matrix:65:14: error: empty character constant psz[len] = ''; ^~

CODE NOT WORKING