How to Make an Arduino WebSocket Server with an ESP32

The WebSocket protocol is a useful tool for communicating between servers and clients without the need for HTTP. Here, I show how to create an Arduino WebSocket server on an ESP32 that echoes simple text messages back to connected clients. I test the server with a basic Python script.

[lenreinhart]

I just got an ESP32-C3-mini-1 and I had already set up the boards and device to ESP32-C3. Following your presentation, the code worked fine on it. On to the second part! :) Thank you

[jmsiefer]

Instead of going the Python route, I decided to download a Chrome plugin called "Simple WebSocket Client." It was way easier for me to test- especially since I know absolutely nada about Python. Just thought I'd throw that out there. Thanks for the video!!!

[savejeff]

Very nice explanation. well structured and just the right balance between information but not to much basic stuff. thx!

[colanuss]

I really like your presentation style. Precise, easy to follow and high quality production. A shame that the channel is a bit underrated.

[fareli]

Wow. Such a great channel Ive never known about. Thanks for the tutorial. Learned a lot from this.

[BharatMohanty]

Hi Shawn I didn't realise that this channel is in my subscription list...anyway welcome back...👍

[globalns]

Another great video, I was getting used to that devo-esque Digi-Key intro though

[jamesanderegg]

Great tutorial, looking forward to more!

[visitor]

Thank you so much for sharing~
It always a heartwarming things to get new knowledge...
#salute

[lintangwisesa]

Where have you been, Sir? Long time no see. Anyway, great Tutorial as always~

[alvarobyrne]

excellent tut, how would you do this with an sparkfun esp32 thing. no difference?

[supermamaoo]

very, very clear tutorial
thanks so much

[MrAndreapas]

hi how can i implement a web page on my websocket server?

[lernenmitrobin]

Hello Shawn,

do you also have experience with the WebSocketsClient lib? When I use the example for ESP8266 as a client, when ESP32 is the server as you described, the client will connect to the AP-Wifi of the server, but the websocket connection becomes disconnected several times. Tested the same server connection with my python script and had no issues.

[kasra]

This is so cool! I assume we could also have a websocket client on the ESP32 (instead of server)? Ideally I would have a standalone ubuntu server handling multiple esp32 clients on my local network

[Alhasan-kdtq]

How do I send a websocket server data (sensor's data), I don't want it to be on browser instead on python console of a ide. can this be used for realtime stuffs ?

[HG-jled]

I have esp32 where and how to connect it, do we have to connect it to arduino board?

[peterkortvel]

Thank you Shawn for the video! How can I convert the payload which is in uint8_t into integer? (I want to control a servo.) I don't understand that data type at all and fail to find any understandable information online. Thank you for help!

[andrewczar]

Hello Awesome video! I have both scripts up and running. Im wondering if there is a way to convert the String" " data send from the python script in arduino to an integer. I am trying to send pwm values to drive a motor.

[SA-ojbo]

Hi, I tried your ESP32 server example with a browser but could not make it work. Can you offer an example with ws used by browser to connect to the ESP32 please?