Comments on: Telegram: ESP32 Motion Detection with Notifications (Arduino IDE)

By: Peace Daniel

Peace Daniel — Fri, 09 Jan 2026 14:13:37 +0000

In reply to Sara Santos. Thank you very much for the quick response . I'll implement this .

By: Sara Santos

Sara Santos — Fri, 09 Jan 2026 11:09:33 +0000

Hi.
Yes.
That’s all possible.
With groups, you can send data to multiple accounts: https://randomnerdtutorials.com/telegram-group-esp32-esp8266/
I have this tutorial about sending whatsapp messages via SIM card, but maybe you can adapt it to use Telegram instead: https://randomnerdtutorials.com/esp32-send-messages-whatsapp-sim7000g/

Regards,
Sara

By: Peace Daniel

Peace Daniel — Fri, 09 Jan 2026 10:26:49 +0000

This is a really educative tutorial. I'd love to know if there's a way to send notifications to multiple telegram accounts and to use a 4G SIM module with the ESP32 instead of a WiFi network .

By: Sara Santos

Sara Santos — Wed, 24 Sep 2025 19:41:00 +0000

In reply to Coco.

Hi.
There’s a problem with your code.
You probably deleted the definition of the bot, or you are calling the bot before it being initialized.
Regards,
Sara

By: Coco

Coco — Tue, 23 Sep 2025 14:07:33 +0000

Hi Sara, love the project. I’m trying to replicate this with a hall sensor and there doesn’t seam to be any problem with it. but when I try to flash the code onto my ESP32 the following error occurs:

Compilation error: ‘bot’ does not name a type; did you mean ‘bit’?

Any suggestions? Thanks

By: Sara Santos

Sara Santos — Mon, 16 Dec 2024 15:08:10 +0000

In reply to BigRocket.

Hi.
Do you get any issues in the Serial Monitor?
Please note that you need to start a conversation with the boat first (manually), before it can send any messages.
Regards,
Sara

By: BigRocket

BigRocket — Mon, 16 Dec 2024 11:53:52 +0000

Hello Rui & Sara,
after 2 years, I have tried to restart this project, but it is not reporting anything to the bot.
Was there any change from year 2022 and now which might cause this issue? (in year 2022 it was working perfectly)

Thank you.

By: Sara Santos

Sara Santos — Mon, 13 May 2024 09:51:13 +0000

In reply to Piyush Kumar.

Hi.
Make sure you initialize a conversation with the bot first.
It will only be able to send you notifications if you start a conversation with it first.
Regards,
Sara

By: Piyush Kumar

Piyush Kumar — Sun, 12 May 2024 08:13:53 +0000

Hey there, I have followed every step, I can see Motion Detected every half second in serial monitor. But i dont know if esp is connected to wifi or not. Cause Bot is not receiving any messages. I have /start the bot but there is no reply. and no message is coming from esp32 too. Pls help ASAP.

By: Sara Santos

Sara Santos — Wed, 15 Nov 2023 04:22:50 +0000

In reply to Jesus.

Hi.
I think that might be a problem with the hardware or the configuration of the pins.
I don’t think the software might solve the issue.
Regards,
Sara