Comments on: ESP-NOW Two-Way Communication Between ESP32 Boards https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/ Learn ESP8266, ESP32, Arduino, and Raspberry Pi Wed, 28 Jan 2026 16:40:20 +0000 hourly 1 https://wordpress.org/?v=6.8.5 By: Clive https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1156663 Wed, 28 Jan 2026 16:40:20 +0000 https://randomnerdtutorials.com/?p=93083#comment-1156663 I am not intending to jump to V2 anytime soon but may use it for a longer distance project I am thinking of some ways down the road? Oh and another thing I saw that I intend to look into is , is there a LD switch in EspNow ? Ld for long distance? Sorry to ask but thanks for just being great at what you do Cheers Clive]]> Hi both (all),

I have seen that there seems to be a ESPNow V2. Is there any advantage other than 500 bytes becomes 1400?

It looks like there are a few changes to callback structure and I did see something about co running code that “falls back to V1” but wasn’t explained well so not actually sure what it meant (if anything)

I have more nodemcu (8266) than esp32 and again not sure what is supported or essential? Does V2 demand s3 or c3 esp32’s

Sorry if I am asking and jumping the gun a little but google so far hasnt been helpful 🤣

I am not intending to jump to V2 anytime soon but may use it for a longer distance project I am thinking of some ways down the road?

Oh and another thing I saw that I intend to look into is , is there a LD switch in EspNow ? Ld for long distance?

Sorry to ask but thanks for just being great at what you do

Cheers Clive

]]> By: LArsene https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1146135 Sun, 04 Jan 2026 16:57:22 +0000 https://randomnerdtutorials.com/?p=93083#comment-1146135 Hello Sara,
Yes, the program works with two ESP32s.

Do you have a tutorial that explains how to make a master ESP32 communicate with two slave ESP32s? The master requests responses and returns different information depending on the slave.

Bests Regards.
Arsène.

]]> By: Sara Santos https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1145304 Fri, 02 Jan 2026 14:25:05 +0000 https://randomnerdtutorials.com/?p=93083#comment-1145304 In reply to LArsene.

I hope your project is working properly now.

Happy New Year.

Regards,
Sara

]]> By: Sara Santos https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1145296 Fri, 02 Jan 2026 14:06:19 +0000 https://randomnerdtutorials.com/?p=93083#comment-1145296 In reply to LArsene.

Hi.
It may be something related to the hardware or some extra configuration I’m not aware of…. because the libraries and functions are the same for all boards.

Regards,
Sara

]]> By: LArsene https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1145025 Thu, 01 Jan 2026 17:25:06 +0000 https://randomnerdtutorials.com/?p=93083#comment-1145025 Hello Sara,
I found the error (MAC addresses!).
I wish you, Sara and Rui, a happy and prosperous 2026.
Thank you for all your efforts and advice.

Best regards, Arsène.

]]> By: LArsene https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1144163 Tue, 30 Dec 2025 17:35:42 +0000 https://randomnerdtutorials.com/?p=93083#comment-1144163 Hello Sara,
Thank you for your reply.

My program using ESPNow with a XIAO ESP32 S3 or C6 module works fine.

However, the same program doesn’t work correctly with an ESP32 Wrom module and a XIAO32 C6. The void OnDataRecv feedback doesn’t occur for the ESP32 Wrom module. Are there two types of ESPNow for ESP32?

Best regards
Arsène.

]]> By: Sara Santos https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1141288 Tue, 23 Dec 2025 11:24:46 +0000 https://randomnerdtutorials.com/?p=93083#comment-1141288 In reply to LArsene.

Hi.
We have this tutorial for the ESP32-C3 Super Mini, which is similar to some XIAO ESP32 boards: https://randomnerdtutorials.com/getting-started-esp32-c3-super-mini/
Regards,
Sara

]]> By: LArsene https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1141095 Mon, 22 Dec 2025 16:39:45 +0000 https://randomnerdtutorials.com/?p=93083#comment-1141095 Hello Sara,
Thank you for your reply.

Have you published a tutorial on SEEEDUNIO modules, specifically the XIAO ESP versions?
I’d also like to take this opportunity to wish you and Rui happy holidays.

Regards, Arsène.

]]> By: Sara Santos https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1140043 Fri, 19 Dec 2025 15:06:57 +0000 https://randomnerdtutorials.com/?p=93083#comment-1140043 In reply to Michael.

That’s great.
I’m glad this tutorial was useful.
Regards,
Sara

]]> By: Michael https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/#comment-1139563 Thu, 18 Dec 2025 14:43:19 +0000 https://randomnerdtutorials.com/?p=93083#comment-1139563 Thanks Sara. I have a board-to-board setup working now using interrupts and both cores.

Cheers,

Michael

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