Comments on: ESP-NOW with ESP8266: Receive Data from Multiple Boards (many-to-one)

By: Bluespark

Bluespark — Thu, 30 Jan 2025 02:16:04 +0000

Hello,
I am new to all this and basically don’t understand much of it, but I am trying to build a project with 1 slave nodemcu (Receiver) that will have 2 LED’s connected to pin D1 and D3 respectively.

And there will be 2 master nodemcu (Sender) acting as transmitters with button hooked on to D1 and D3 pins.

Can you please write the simplest code possible and that could respond almost at an instant to the button presses.
Thank you.

By: Roberto

Roberto — Sat, 25 May 2024 08:36:17 +0000

Thank you very much, it works perfectly, very grateful.

Muchas gracias, funciona perfectamente, muy agradecido.

By: Mahan

Mahan — Mon, 20 May 2024 20:03:44 +0000

hi
im using esp8266 boards and i got problems with #include
with #include the error is gone but the functions are not declared
what should i do ?

By: Beatrice

Beatrice — Sun, 27 Aug 2023 21:37:12 +0000

hi sara, thank you for this tuto
I have question about data type , when I used “float” variable (temperature, humidity ) the slave receives 0 as value (code doesn’t work correctly)
but when I changed variable’s type from float to int ….> the code worked
would you please explain me this !!!!!

By: sara

sara — Sat, 26 Aug 2023 21:32:01 +0000

In reply to humayun. hi, did you resolve the prblm, if yes how you did ?

By: sara

sara — Sat, 26 Aug 2023 21:30:04 +0000

In reply to Renzo. I've the same issue .... !! did you resolve the problem

By: sara

sara — Sat, 26 Aug 2023 21:13:24 +0000

In reply to Fiorenzo Daniele Giust.

hi,
I’m trying to use the same tutorial to send sensors reading but isn’t work, the sender collect data using sensor and send them (delivery success) but the slave recieves 0 as value (not the collected data , for ex temperature 34)
I’ll appreciate it if you share your code with me, or explain me how you did it and if you reply as soon as possible
best regards

By: Christian

Christian — Mon, 03 Jul 2023 11:31:20 +0000

Hi,
I have a problem. I want to send sensor datas, Temp and Hum. and in the struct I need double oder float. This doesn’t work. With int i have no problems but i want to use 35,00 datas.

Can you help me please?
Regards,
Christian

By: Sara Santos

Sara Santos — Thu, 27 Apr 2023 08:35:52 +0000

In reply to mitesh shah.

Hi.
Here’s a similar tutorial for ESP32 boards: https://randomnerdtutorials.com/esp-now-many-to-one-esp32/
Regards,
Sara

By: mitesh shah

mitesh shah — Tue, 25 Apr 2023 08:54:58 +0000

Hi Its Great Tutorial, How can used with ESP32 ?, any Change ?
How many master connect with one slaw ?, i want 12 master with 1 slaw