Add wifi to your Bigtreetech mainboard/touchscreen - ESP-01S guide

I’ve had plenty of requests to make a guide on adding a Bigtreetech ESP-01S WIFI module to SKR boards and TFT touch screens, so here it is. While nowhere near as good as Octoprint, it is very cheap and could be useful. The situation is sure to improve thanks to the developer behind the firmware and web interface.

These steps may be compatible with other ESP8266 hardware but there is no guarantee.

This BTT writer and BTT ESP-01S were sent to me free of charge with an SKR V1.4 Turbo board for the purposes of making this guide. All opinions expressed are my own.

Purchase the TFT35 E3

Purchase the SKR V1.4 (Turbo):

Purchase the SKR Pro:

Resources:

Other resources:

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[jack-bjorn]

As always, you are the go-to. No one out there is as thorough as TT. Thanks Michael.

[NikolaosSelimis]

Just wanted to say THANK YOU!! Loving your material and your doing a great service for the community. Wish you all the best!!!

[rods]

Great instructions! Easy to follow. I already purchased a few but didn't install any yet before watching this. I did do part of the install different. After I burned the firmware, I unplugged everything but the 3.3V & ground and completed the remaining steps while still powered by my laptop. Upon completion, I plugged it into the TFT35 on my Ender 3 and it was ready to go!

[Markfps]

This is the video that I wanted to get! Thanks Michael! I have all the necessary parts sitting at home.

[johndaly]

As usual a great tutorial. You are quickly becoming my goto source when I have issues/questions on my ender 3 pro. I bought my ESP-01 as a bundle with my TFT and it seems like it came preloaded with the needed firmware so I only needed to run steps 4.5.6. Still very good tutorial for those needed steps. If I had seen steps 1-3 I may have opted out of this upgrade as the cost of the writer+cables would have made this a $13 upgrade. I did have some issues post configuration trying to make changes to my preferences and creating macros but the problem was the on board chip memory usage was nearly 100%. I ended up removing the the favicon.ico and 404.html files (not really 100% sure what these files do for me) and that freed up enough space. Could probably also remove the index.html.gz file as well. Just a tip in case anyone else is running into issues with this.

[McNik]

I was literally looking for this yesterday and now you are here <3

[tommydp]

Thank you! Thanks to this video, all my questions have been answered and I have a great environment, really. Thank you.

[ALegitimateYoutuber]

this week i'm heavily upgrading my ender 3 based on reviews you did. because well i need it and well I need it quite since it's going to have to run like a foot away.

[thensley]

Thanks again, Michael!!! I bought a few of these and was struggling!

[landonhillyard]

Your instruction quality is incredible. You deserve to be much larger than you currently are.

[MrFramitz]

I purchased the screen and wifi module with the board, I returned the screen and wifi module.
It use Octoprint instead.
The board is a wonderful upgrade.

[jeffweiss]

thank you for this. I have been looking for these instructions for a long time.

[LesFishingMoreCatching]

I just added this to my Biqu B1 with the TFT35 B1 v3.0.1. I ran into two issues, as mentioned in another comment below while selecting the firmware file for the esp, you need to check off the box left of the file name and type the address into the box on the right.
Also I had to edit a config.ini file and enable the 115200 baud rate on the 2nd communication device.
Also you can can configure the ESP with the flash tool by just providing power to it after the flash.

[KeirMurphy]

Sweet. I've been meaning to get mine working. Thanks for the video

[albertofranca]

Congratulations on the video, beautiful SENNA jacket, thanks for remembering.

[QuantumRob-yt]

Nice video, I was thinking of doing this at some point and now glad I didn't. :) I'll check this off the list.

[wyohman]

It's interesting to see the old MS-DOS 8.3 filename limitation in 2020....

[roccocroce]

What a fantastic video. Thank you for this

[tjones]

I ran into an issue using this with the non TFT display plugged into the SKR Pro V1.2 board directly. Got it all flashed and looked great but nada on the M115 query. This is a Marlin thing... Marlin has two serial ports configured. One for USB (-1) which is used to send GCODE over USB (normal!) and one for the TFT (1). Now since you plugged yours into the TFT display, this worked because it was daisychained through the TFT display serial port (1). I was using a cheap non touch display hooked up using EXP1 and EXP2. So serial port 1 was not correct. Change 1 to 6 in the Marlin firmware and recompile and load on the SKR board and the SKR Pro V1.2 ESP01 connector is then active and connects. Working! Win! Thanks.

[not-another-dev]

I love the SKR 1.4 I updated my Ender 5 for this board and can't recommend it enough, I have asked them to re-orient the ESP-01S port somewhere else on the next revision of the PCB