ATtiny85 Microcontroller Real-Time Clock

NOTE: Since the video was uploaded, the C++ code was modified to display temperature in Celsius.
Link to circuit diagram & C++ sketch:
akuzechie.blogspot.com/2021/0...
MAX7219 dot matrix display library:
github.com/wayoda/LedControl
DS3231 library:
github.com/NorthernWidget/DS3231
Contents:
0:00 Introduction
0:19 Circuit Diagram of Implemented System
0:41 Demonstration
1:04 C++ Sketch
4:13 Conclusion

[@IMRANKHAN-we9un]

Superb project. I waited it.👍👍

[@AnasKuzechie]

Thanks

[@IMRANKHAN-we9un]

@@AnasKuzechie Dear Sir,
Your projects are unique and day by day we are learning a lot of fantastic projects. Proud to be your subscriber.😀😀😀

[@AnasKuzechie]

@@IMRANKHAN-we9un Thanks again

[@atihrot755]

Perfect job it works for me without problems on Digispark. I programmed with Attiny 15,45,85. I didn't have any problem, I just had to change the library to what you put here.

[@AnasKuzechie]

Thanks for your feedback

[@AAdnaanmtl]

Excellent sir

[@AnasKuzechie]

Thanks

[@reyrank2846]

is this possible for an 8x8 matrix considering the clock limitation on a tiny?

[@bazrazin1]

you wrote the program yourself, i wanted to make one using rtc, attiny & i2c 7 segment is it possible, i made that using nano, wanted to shrink that even more. still figuring out how to make it work for 12 hr am/pm system on my other projects.

[@MrBobWareham]

Very nice, but how do you change the time for winter and summer??

[@AnasKuzechie]

Thanks for your feedback. I have in one of my tutorials created a library for programming RTC interfaced with Arduino Nano/Uno.

[@shamsulalam6982]

I am getting error " Error compiling for board Digispark (Default - 16.5mhz).

[@atihrot755]

The day is coming. Put it on Attiny 85 not digispark program.. It will work on attiny without any problems. Use Digispark to do so.

[@sandeepsingh-rm3sz]

error compiling Attiny 25.45,85 is coming

[@shamsulalam6982]

I am getting the same, Did you resolved?

[@atihrot755]

Use exactly the libraries listed here and it will work for you.

[@driss25]

No push button

[@atihrot755]

You have to set up the clock module with a different program and then assemble this project. There must be a flashlight in the clock module to keep the memory of the settings. That's how I did it. It works perfectly. DS 3231 is the most accurate module, it shows the clock, date and temperature. It is a combined module.

[@rarenu]

Hi Greetings!!
Please share the Wire.h library link.

[@AnasKuzechie]

Please watch my other videos where I interface the tiny with RTC

[@rarenu]

@@AnasKuzechie Your suggested DS3231 RTC library gives compiling error when I tried with ATtiny85.
Please suggest your Arduino IDE version and DS3231 library version that works fine with ATtiny85.
Thank you with great regards.

[@georgethomas639]

Nice project, but I thought that using I2C with an Attiny required use of an alternate library such as TinyWireM.h, not Wire.h.

[@AnasKuzechie]

Thanks for your feedback. In this video th-cam.com/video/vosYBYiBc08/w-d-xo.html I explain how to setup the module to work with Arduino IDE and hence the Wire.h library.

[@georgethomas639]

@@AnasKuzechie Thanks...I'll give that a try.