ESP01S connection issue

[SPO (Stefan Podlesak)]

Hi there!

I am having a bit of an issue within SKR pro v1.2 and the esp01s WiFi module.

I flashed everything with the provided files.
I had the btt firmware running and was able to do a setup with esp3d.

Then I found the files by Ryan with the dedicated files for v1 cnc esp 3d.

After reflashing, I can’t establish a connection via WiFi.
I always get the same error page.

I tried to flash everything from the ground up, but it did not help.

Anyone who’s got a idea what I can try?

[SupraGuy (Dan)]

I would think the JSON error in the upper corner is rhe issue, looks like the config file is corrupted with something.

[SPO (Stefan Podlesak)]

And how do you think can this be resolved? Any idea?

[SupraGuy (Dan)]

The configuration file needs to be inspected, repaired and re-uploaded via the USB interface used to flash the ESP01S

[SPO (Stefan Podlesak)]

So when I have a new ESP01S in spare, I can try this one? I have no usb interface suddenly

[MakerJim]

@SPO

Anyone who’s got a idea what I can try?

There’s a great guide to follow in the forum post here:

Add Wifi to SKR Pro step by step

If you are looking to add the little ESP01 board to your SKR board to control your MPCNC or Lowrider or whatever CNC device you are trying to wifi enable then I hope this post helps you avoid the struggles I went through. I really had trouble finding all the pieces required. I am doing this for an MPCNC with SKR Pro V1.2 with TFT35 E3 V3.0 running dual endstop V1 firmware V515. Just works!!! First you need an ESP-01S like this (note: ESP-01 has less memory than ESP-01S so make sure you have an…

The ESP-01S is pretty affordable, I got a kit with 3 of them and the programmer for under $20 on Amazon. Those ESP-01S also can run other firmware that bridges serial UART connections, very useful