Arduino and Max7219 LED MATRIX Clock with RTC DS1307

Arduino and Max7219 LED MATRIX Clock with RTC DS1307.

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Arduino Sketch and Library Link:

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[uttamdutta]

it apperanly looks good and working also, but there is significant time difference after few days, weeks and months. in long run this is not going to work practically..any idea how consultant time can be shown without any change in time

[kka]

At your link most of the library's are missing and folders empty.

[loisbly]

hello will you have a program to display the time on 8 matrix led with the ds3231

[TvasasTvasas]

Downloaded the libraries and the max7219_clock_Succesd folders.Where do we put both if them?Please let me know..

[raviprakash]

Thanks for the project. But I have one doubt. Can we make a Digital clock using only Arduino UNO and LED matrix only i.e. without RTC? Please help anyone.

[qboyqboy]

hi, work great, but it loosing time, about 30-40 second a day, wonder what happen, please help.. thx

[joseluiscastrejonm.]

Although are mentioned in the sketch, you never show in this video neither the diagram the switches to set up the time, could you update your diagram please?

[virendersingh]

BUTTON_PULLUP was not declare in scope.
Any one can help?

[virendersingh]

BUTTON_PULLUP was not declare in scope.
I am new in this field
Please help

[uttamdutta]

can you please tell the hardware of pushbuttons switch

[ozkanzengin]

No way to upload files to another location?

[danangts]

klo extrak angka jam dari waktu rtc gimana caranya ? spy display menyala hanya pada siang hari

[tomoi]

Hello, I had a problem in "max7219_clock_Success": an error message appears when I check or compile, "exit status 1 Error compiling for board Arduino/Genuino Uno." Thank you in advance for helping me

[alexandrkazmalyk]

Please give me a link, the link at the top is not working.

[sarojbehera]

Arduino: 1.8.10 (Windows 10), Board: "Arduino Uno"

In file included from

error: variable 'myfont' must be const in order to be put into read-only section by means of '__attribute__((progmem))'

unsigned char PROGMEM myfont[80][5] = {

^

error: variable 'mybigfont' must be const in order to be put into read-only section by means of '__attribute__((progmem))'

unsigned char PROGMEM mybigfont[10][20] = {

^

error: variable 'mytinyfont' must be const in order to be put into read-only section by means of '__attribute__((progmem))'

unsigned int PROGMEM mytinyfont[42][3] = {

^

In function 'void get_time()':

error: 'class DateTime' has no member named 'dayOfWeek'; did you mean 'dayOfTheWeek'?

rtc[3] = now.dayOfWeek(); //returns 0-6 where 0 = Sunday



dayOfTheWeek

Multiple libraries were found for "LedControl.h"
Used:
Multiple libraries were found for "FontLEDClock.h"
Used:
Multiple libraries were found for "Wire.h"
Used:
Multiple libraries were found for "RTClib.h"
Used:
Multiple libraries were found for "Button.h"
Used:
exit status 1
'class DateTime' has no member named 'dayOfWeek'; did you mean 'dayOfTheWeek'?

Invalid library found in no headers files (.h) found in
Invalid library found in no headers files (.h) found in
Invalid library found in no headers files (.h) found in
Invalid library found in no headers files (.h) found in
Invalid library found in no headers files (.h) found in
Invalid library found in no headers files (.h) found in
Invalid library found in no headers files (.h) found in

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

 






hello, sir these problems I face what is the solution to this.

[shubham-syjl]

I need to display temperature on sotmatrix how can 8 do that please help ..

[neirodrigues]

How to do this project with "rtc 8563" I can not, congratulations for the work!

[panosgeorgoulias]

Very lengthy video without reason. You could show the same construction in 5 minutes instead of 20. Too boring.

[sanu]

SAME ORIENTATION PROBLEM THE TIME IS NOT UNDERSTABLE WORNLY ORGANISED

[muhammadrafii]

Saran aja bg..
Gausah di pakek in musik.
Di jelasin aja coding sama rangkaian nya nya biar yang nonton lebih di pahami bg