How Many Wifi Channels Are Supported?

Projects Networking, Protocols, and Devices
1

Hi, i am looking to prototype a device that needs to communicate with multiple other devices over wifi. There will be a base unit that sends and receives data to/from other individual controllers. Each controller will control a motor, and will send data to the base unit, which will then send data back. How many independent devices can the main controller interface with? I am looking for up tp 16. Or, is it possible to simply use some sort of encoding of data so that the base unit can communicate with each remote device?

2

Most radios can connect to one WiFi.
The main controller can act as a server, receiving data from all and dispatching commands to all.

Alternatively, you can create a mesh of direct connections using ESP-NOW. Might be easier.

3

Hi, thank you for responding. Can you provide some more clarity? How would the main controller act as a server, receiving data and dispatching commands? Are you saying that the main controller can host some sort of mini-web server code, and the other units are essentially "web browsers" that communicate with the server? If this is the case, is there somewhere you can point me to learn about this? What about your alternate method of creating a mesh of direct connections? Is there any info regarding using ESP-NOW to do this?

Or, based on some other stuff I read, can I have an Android device that acts as the web server? I would need to integrate with a tablet/phone so that I can display readings from each remote device. Also, keep in mind that this needs to operate where it is not connecting to any sort of home router or to an external internet cloud, as the application is mobile.

Thanks,

  • Joe
4

Start reading about the ESP32 and ESP8266 as server/client, and using ESP-NOW.
Start simple.

5

Thank you, I appreciate it. I will do so!

  • Joe
6

Start building simple code based on your reading. 1 server and 1 client.
If you run into issues, it will be easier to solve them if you only have a few working components.
Then, once you have a solid understanding, you can confidently expand your project.

7

ESP-MESH with ESP32 and ESP8266: Getting Started | Random Nerd Tutorials

There are several YouTube Vids dedicated to ESP-NOW

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