Comments on: MicroPython: ESP32/ESP8266 with DS3231 Real Time Clock (Get Time and Set Alarms)

By: Francis Savoldelli

Francis Savoldelli — Tue, 24 Jun 2025 16:24:01 +0000

Hi,
Thank you for this information and thank you again for your help.
Regards.
Francis.

By: Sara Santos

Sara Santos — Mon, 23 Jun 2025 10:17:36 +0000

Hi.
We don’t have that exact project you’re looking for.
But, we have a guide for the OLED display: https://randomnerdtutorials.com/micropython-oled-display-esp32-esp8266/
You may want to combine this project with the OLED tutorial to create your clock.

Also, I don’t have an NTP tutorial using MicroPython at the moment.

Regards,
Sara

By: Francis Savoldelli

Francis Savoldelli — Sat, 21 Jun 2025 16:23:11 +0000

In reply to Sara Santos.

Hi,
I updated my MicroPython firmware to the latest version 1.25.00 and it works!
Thank you so much for your help.
I’d like the ESP32 and DS3231 RTC to display a more limited version of the day, date, time, and temperature on a SSD1306 i2C OLED display, using an NTP server. Are you planning to do this on the Random Nerd Tutorials website?
Thanks for your reply.
Regards.
Francis.

By: Sara Santos

Sara Santos — Sat, 21 Jun 2025 09:20:07 +0000

In reply to Francis SAVOLDELLI.

Hi.
Your English is fine.
Yes.
I already answered your question.
Regards,
Sara

By: Sara Santos

Sara Santos — Sat, 21 Jun 2025 09:18:54 +0000

In reply to Francis SAVOLDELLI.

Hi.
Everything seems to be formatted correctly…
Update your micropython firmware version to the latest 1.25.00. You seem to be using version 1.23.0.

Let me know if that fixes the issue.
Regards,
Sara

By: Francis SAVOLDELLI

Francis SAVOLDELLI — Fri, 20 Jun 2025 15:51:53 +0000

Hi,
I’m French and my English is bad, sorry.
Did you understand what I meant ?
Regards.
Francis

By: Francis SAVOLDELLI

Francis SAVOLDELLI — Fri, 20 Jun 2025 09:47:16 +0000

In reply to Sara Santos.

Hi,
Thanks for your help.
I tried to delete the parenthesis and writing it again.
I got the same error like this:
MPY: soft reboot
Traceback (most recent call last):
File “main.py”, line 51
SyntaxError: invalid syntax
MicroPython v1.23.0 on 2024-06-02; Generic ESP32 module with ESP32
Type “help()” for more information.

In line 51, there is only this closing parenthesis, just under the letter “f” of the word “formatted_datetime”.
Regards
Francis

By: Sara Santos

Sara Santos — Fri, 20 Jun 2025 09:10:50 +0000

In reply to Francis Savoldelli.

Hi.
Try to delete the parenthesis and writing it again.

If you can, tell me the exact error you’re getting.

Regards,
Sara

By: Francis Savoldelli

Francis Savoldelli — Fri, 20 Jun 2025 08:18:48 +0000

I’m having a small problem with the code that synchronizes the RTC time with the system time and gets the current date, time, and temperature every second.
In this part of the code:
“formatted_datetime = (
f”{days_of_week[current_datetime.weekday]}, ”
f”{current_datetime.year:04d}-{current_datetime.month:02d}-{current_datetime.day:02d} ”
f”{current_datetime.hour:02d}:{current_datetime.minute:02d}:{current_datetime.second:02d} ”
)”
The last parenthesis, which is a closing parenthesis, causes a syntax error in Thonny, and I don’t see why and can’t fix it.
Thank you very much for your help.
Francis.