Add wifi to your Bigtreetech mainboard/touchscreen - ESP-01S guide
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- Опубликовано: 13 апр 2020
- 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 BTT writer from Aliexpress: s.click.aliexpress.com/e/_dZ0...
Purchase the BTT ESP-01S fromAliexpress: s.click.aliexpress.com/e/_dYu...
Purchase the TFT35 E3
Aliexpress: s.click.aliexpress.com/e/_d8n...
Amazon: s.click.aliexpress.com/e/_dZZ...
SKR Mini E3 + TFT35 E3 bundle from Amazon: amzn.to/36xbG3m
Purchase the SKR V1.4 (Turbo):
Amazon SKR V1.4: amzn.to/3bcMpyY
Amazon SKR V1.4 Turbo: amzn.to/3eh5cuJ
Aliexpress SKR V1.4 and accessories: s.click.aliexpress.com/e/_dWq...
Purchase the SKR Pro:
Aliexpress: s.click.aliexpress.com/e/_dVR...
Amazon: amzn.to/2V49Btu
Resources:
ESP firmware flashing tool: drive.google.com/file/d/1yD1r...
ESP firmware /web interface four files: github.com/bigtreetech/BIGTRE...
BTT writer manual pdf (for flashing initial firmware to ESP-01S): github.com/bigtreetech/BTT-WR...
ESP-01S basic guide pdf: github.com/bigtreetech/BTT-WR...
luc-github ESP3D repo: github.com/luc-github/ESP3D
luc-github ESP3D-WEBUI repo: github.com/luc-github/ESP3D-W...
Other resources:
ESP8266 wiki: en.wikipedia.org/wiki/ESP8266
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Just wanted to say THANK YOU!! Loving your material and your doing a great service for the community. Wish you all the best!!!
As always, you are the go-to. No one out there is as thorough as TT. Thanks Michael.
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!
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.
This is the video that I wanted to get! Thanks Michael! I have all the necessary parts sitting at home.
I was literally looking for this yesterday and now you are here
and we wont see this video again till youtube suggests for us to watch it in ten years.
Your instruction quality is incredible. You deserve to be much larger than you currently are.
Thank you! Thanks to this video, all my questions have been answered and I have a great environment, really. Thank you.
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.
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 0x00000 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.
Just wanted to give a big thanks to you for this comment. I was following the instructions in the vid but it did not seem like the firmware was flashing. I assumed it was an issue with the ESP module I bought but new ones I got didn't work either. I noticed in the guide, the textbox was highlighted green but I didn't see the checkbox marked, so I assumed it might not need it. This was my issue all along. I was able to finally properly flash the firmware following the step you provided and got it working on my printer.
@@DinkaFox1 glad my comment helped.
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.
thank you for this. I have been looking for these instructions for a long time.
Downloaded the files, now it is time to read!
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.
Congratulations on the video, beautiful SENNA jacket, thanks for remembering.
Thanks again, Michael!!! I bought a few of these and was struggling!
Me too!
@@jeffweiss2131 Dumbass bought this......He will make another video and it will ber BTT new board with onboard wifi anyway.....All this effort......I bought things like this before and then as soon as i finish setting up.......Go figure....they bring out a new latest and greatest board with new features.....Waste of time....the money is no issue just pointless.
Nice video, I was thinking of doing this at some point and now glad I didn't. :) I'll check this off the list.
As a Brazilian that lived and love Australia ( Perth is still Australia right? :D ) it's super cool to see you in that Ayrton Senna Jacket the man was a class act and the main reason F1 was cool to watch in my childhood (also his battles with Mansell and Prost), I stil remember the watching San Marino in 94 super clear even now, such a sad day.
He was a excelent pilot but also knew a lot about cars and mechanics in general even without being an engineer.
Keep up the awesome work, this channel is the best 3d printing resource on YT, I always watch it even when it's related to printers I don't care too much just because it is so well done. I always learn some stuff,
Sweet. I've been meaning to get mine working. Thanks for the video
I tried esp8266 based solutions in the past, and they were slow but functional, and wifi was still more reliable than the usb my printer had. Today, with raspberry pi zero w and similar boards for $10, there is not much reason for esp8266 on the printer anymore.
thank you so much for all the guides
Stopped by to say awesome sweater!
I just want to say that I love your channel. Of all the people that so called teach you how to on this site you are the clearest and you don't jump so fast that we can't keep up. How do those other people think they are helping when they go so fast that you can't catch half of what they are saying. Frustrating. Not everyone that watches these videos is a pro. SLOW down damnit. Not you though, you're great. Thank you. I have a request. I'm new to this stuff and I'm old. It confuses the heck out of me. I've tried and tried and I am not able to configure the firmware for my Anycubic Mega Zero 2. I installed the SKR-Mini 2.0 and the TFT35 E-3 3.0 . Nice boards but I can't get things going. Screen I managed to flash. But I need the printer itself set up. X=220, Y=220 and Z=250. I also installed the BLTouch and it has the stock extruder that runs reverse from what the firmware is running. I like the stock extruder, it works great, it is dual drive geared and I like it. Would you be able to configure that for me in a firmware i could simply download and flash? I'm about ready to just dump the whole dang thing in the garbage. I am tired of trying to figure out this stuff. If I still had the original boards I'd be putting them back in but I donated them to a school back east so I'm stuck.
One of the problems I have with Octoprint (Which I use most of the time) is the comms speed between the pi and the main board (SKR Mini E3) causes the printer to wait for a split second sometimes for the next command. This is particularly true on printed curves. So a fast way to upload to the SD card would be useful. Looks like the wifi card might be a better solution.
What a fantastic video. Thank you for this
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
Some dupont connectors and hot glue would remedy the situation.
Great step by step tutorial.
And really nice Ayrton Senna Jacket :-)
Great video mike
Old but a good video!
If anyone is interested, it works almost exactly the same with the ESP32E/ESP32U, only you don't need the flashing tool!
Unfortunately, my comment explaining how it works, and the pin assignment was deleted.
So you have to write to the BIQU support about the pin assignment!
any ideas this keeps popping up when use touch screen while printing marlin mode works fine
M73 Q84 s7
this its something to do with print percentage
any ideas how to stop it
thank you
It's interesting to see the old MS-DOS 8.3 filename limitation in 2020....
It wasent as much DOS as the FAT filesystem from what I remember.
@@davey3765 DOS had a 3 character limit which is why .jpeg is .jpg in so many places. as well as many other programs still sticking with 3 letter extensions even though it isn't really relevant anymore.
@@gg-gn3re this is because of some tiff between marlin lead developer and luc (author of Esp3D) where marlin maintainer says "the file name limitation is a feature not a a bug" !! can you believe it !!
sadly, this is apparently a Marlin limitation :
@@GameProgrammer79 memory constrained devices can't afford thicc filenames.
Those esp8266 modules are used in quite a few smart home devices also
So not that anyone probably needs an excuse to buy a sub $5 ftdi, but if you do, or you want to find use for it after you upgrade your printer it can come in very very handy to write new firmware on smart home products that arnt suppose to be "hacked".
Interesting as always
Thanks for sharing :-)
thanks, this is very valuable information!
Thank you. Thanks to you, I succeeded.
I used a D1 mini ESP8266 and added to my A10M , it uses 5V and TX and RX. connector on main board. not really all that usefully due to not being able to use internal SDCARD because so slow, but great for using terminal without having to plug in USB cable, or doing movement / home moves. but because my printer is on same desk as PC its easier just to use LCD menu.
but it was a fun project to build and use. once SDCARD use is updated it be a lot better. The macro information and setup was very useful as i have not done macros but now know how :D
Got an immediate like because of the SENNA jacket.
i recently added the same to my skr 1.3
just flash esp3d onto a esp-01s via arduino ide and ftdi adapter, and hook it up to the "TFT connector" (right side of sd card slot, above aux 1), its pinout is 5V GND TX0 RX0 RST.
rx/tx can be hooked up directly, just 5v to 3.3v via external dc-dc or linear regulator.
the digital i/o pins on the LPC boards can take 5v as input but its output is 3.3v, no need for a level shifter.
bridge EN/CH_PD and RST on the esp01s to 3.3v so it can boot.
thanks for the tip! Is the documentation available somewhere?
Could you make a video on how to easily transfer all the changes from old Marlin firmware [e.g.: for custom 3d printers] on to the new version of Marlin? Seems like every time, we have to go and find the parameters we need to change and do them manually 1-by-1. Thanks for very informative videos.
Another great video. Thanks Michael.
One thing. Have you tried compiling the TFT firmware with #CLEAN_MODE_SWITCHING_SUPPORT enabled? That enables the TFT to continue forwarding messages received from its serial ports on to the printer even when it's in Marlin emulation mode. I haven't tested it with the wifi module but it should allow the wifi module to work in either mode.
If you only need the WiFi and no touchscreen there is also a way. Took me some time to figure this out. I used a NodeMCU which has USB connection for flashing (no extra flasher hardware needed) and can handle 5V. I connected it directly to the TFT connector (VC, GND, RX, TX) and it runs great.
can you please send link to any tutorial?
Great hoodie!!!
Starts video - 666 views - hears Shotgun loading with malicious intent.
Great video as always.
Very cool. I’d love to put WiFi on all my printers.
Thank you for this. Any chance of a video on how to get there(BTT)Filament sensor working as I believe this is another thing people are struggling to get working
just to know, can I use a ESP-01 (non S version). Mistake on my order and now I have a ESP-01 :(
First off, thank you very much for making this guide.
Very interested in making this work correctly, but I'm finding that there seems to be a limitation to 8.3 filenames. I know that my firmware is not limited that way, as I use long filenames (And the .gcode extension) regularly. In fact when converted to 8.3, I can't seem to make them work, so it's not even particularly good at what I mostly want from wifi connectivity to my SKR Pro 1.2 board.
Everything else, including the Gcode console and status monitoring seems to be working perfectly.
I've read comments that the 8.3 limitation is a limitation of Marlin, but since I can use the filenames if I sneakernet the files to the printer, why can't I upload them through the ESP8266 firmware?
Is there a newer version of the firmware that will not insist on 8.3 filenames?
Is there an alternate that will work through the regular LCD interface? ( FILENAME.GCO does not appear to work )
i did all and then i dont see the ESP3D on the wifi , my network is 10.0.1.xx is that why ? if not what can i try to make it work ? thanks
I like your Ayrton Senna jacket.
Nice video.
I think it can definitely replace octoprint for me, as long as I can print something from the internal SD and have control over wifi, that would free me from using a raspberry and having to shut it down correctly to avoid SD card corruption.
awesome guide! have you ever seen an issue whereby setting temps, or setting temp auto-reload on the temp widget, hangs the interface permanently?
Really cool that they put this right on the board... just one clarification...the ESP 01 isnt a wifi module....its an entire microcontroller, that happens to have wifi... Yeah its probably splitting hairs, but dont undersell this cool ass little thing.
there are options in the tft35 firmware to keep the serial connection alive. after compiling and uploading all commands to the esp go through including m117 commands in marlin mode on the tft.
Good video. I opted for the ESP-01S when I was building my Hypercube Evolution. A few observations:
- Personally, being an old guy (LOL), the 8.3 filename is not a big deal. It's what I grew up with. (it's the old 8-bit DOS filename format. Tells us something about the board.)
- Not sure why the upload is slower than on a standard wifi, but I'm not in that big of a hurry.
- The Writer is a nice touch. I had to wrestle with the old Arduino-and-breadboard a bit to get it rolling.
My personal opinion, the ESP isn't better or worse than an OctoPi, it's just different. (although the new OctoServer might change that opinion slightly)
Give " Tasmotizer " a try. I think your opinion will be forever changed. 1. Load Tasmotizer. 2. Select BIN and load BIN file. 3. Click Tasmotize. (it auto selects the correct pragramming optins and correct COM port unless you have multiple ESP chips plugged in.)
Just subscribed for respect to the jacket.
This is great because when I bought my TFT35 it came with the WiFi board but I didn't know what to do with it since I couldn't find any info for it.
Also, may I make a suggestion for a future how-to? Upgrading from the stock thermistor to a PT100 thermocouple. The standard thermistor in my Ender 3 recently failed so I replaced it with another of the same type. What I really wanted to do was to replace it with a PT100 type thermocouple but the SKR Mini E3 board doesn't support it. I know an amplifier adapter board is required but not too sure about reprogramming Marlin to make it functional.
Was trying this week ago and Nothing happens when i trying to upload index. Html... Esp free space doesnt change... Says 490kb free, no file appear in file list(( was trying several esp01... Nothing works
Just as a note, any ESP01 module with the right firmware flashed can be used. They are a fully standalone microcontroller and can be flashed with lots of different firmwares. The ESP-01 is a standard form factor. Also, you don't need the BTT Writer. Any FTDI style adaptor with 3.3V logic will work with this. Those things aside, this is a great tutorial if you want to add basic WiFi on 2.4GHz only to your printer very cheaply as the ESP-01 is very cheap.
You will NEVER get an ESP chip match Octoprint because they just don't have the processing power. Octoprint runs on a Raspberry Pi or even more powerful computers, more powerful than the microcontroller on the printer controller board, let alone just the ESP chips. The ESP chips are great for basic wifi functionality, but if you use the full feautres of Octoprint, you might as well just stick to Octoprint and not bother with these as Octoprint can give you the full WiFi capabilities as well
My Ender 3 Pro is getting the MAXTEMP ERROR whenever I start heating either the hotend or the bed.Whenever I turn on my printer the nozzel reads at 298 and the bed at 147. I Tried replacing the thermisters on both the hotend and the bed. I replaced the hotend. I also reflashed the firmware. The motherboard I'm using is the stock Creality V1.1.4. I also have the BL Touch attachment. What else could be giving me this error and what other options do I have other than replacing the motherboard?
you are à genius thank you very very much.
Any chance you can do a video on installing the Bigtreetech Relay 1.2 on the tft35 and or the SKR 1.3
Thumbs up for the Senna jacket.
Key question for me (and why I found this and got here): Would BIQU B1's stock filament runout sensor still be active for a job launched this way? Since a filament runout sensor's feedback is not supported via serial communication, jobs launched from Octoprint have no filament runout protection. i suspect the same kind of issue may be at stake regarding the power loss resume feature as well.
I would say, that if you need only Wifi printing with terminal - this is perfect tool for couple of dollars. Furthermore, if you will change old and barely working ESP--01S to atleast ESP8266 or even ESP32, you will have DHT support for temperature monitoring, relay control (or any other device with GPIO control) or WEB camera. Even more - you can add additional small OLED via I2C and that will be interesting device for less than 10 dollars.
Thumbs up for the Ayrton Senna hoodie! If I'm ever able to emigrate from Brazil, Australia will be my first choice (if the Chinese don't buy the whole country first, that is😂😂 ). Thanks for an other great video!
the Queen has secretly sold Australia to the Chinese but it's only official when she is gone for good. She will last long because she already has the money.
How about a video showing how to make the SKR Mini e3, TFT-35 & Bltouch work together.
Will never forget 1994 San Marino.
Was that the one year San Marino ever won a game?
@@JasperJanssen No it’s when Ayrton Senna died in a car accident (Formula 1).
the 8+3 file name is from the old pre fat32 days.
The Esp32 has the same file issues.
Hi I am new to 3d printing and was wondering about some sources for filament especially in aus? Also what to look for in good quality filament and how to tell the difference between bad filament and good filament? What type filament would be good for what applications? Thanks TTech
I was going to ask if it had any benefits over octoprint and you answered that pretty fast. Been using octo for years now and won't ever look back even if the boards are $35+ and with a high gain wifi adaptor your printer can be pretty far from your router.
yoooo..!! I need that hoodie!
Fantastic video, worked a treat. Any idea why i have the coordinates keep scrolling down the command box?
Hey Micheal ,BIGU have put out the SKR mini e3 V2.0 with easy sendorless homing , dual z support and thermiator ahprtage protection circuit , can you do a video going over and setting up the board and verifying the thermistor protection circuit?
Can you please explain the "ESP3D Firmware Update" button @12:22. My understanding is that the wifi module works out of the box and then use Firmware Update to flash the latest firmware. Hence no need for the BTT Writer.
@Teching Tech Please do a video on the MKS SGEN L v1 board, there are no videos in English on how to set up, especially not with uart enabled with the new Bigtreetech TMC2208 V# preenabled UART drivers.
how about when starting ah print from SD Card in TFT Slot? would the WIFI Interface display the progress of the print?
As ever I have found this tutorial very interesting and easy to follow. I have managed to flash my ESP8266 BTT ESP-01S and connected it to my TFT 35 and it is showing on my network. The only problem is when I enter the IP it logs me on to my Virgin Media router. Now I'm completely out of my depth!! What do I do now?
Thanks for the great info! Is there video on how is integration of this TFT and Octoprint work? If not, can you create one? I mean if you start print from octo will it show progress from TFT? Can you choose to print from TFT SD card from octoprint interface? Thanks!
There is a plugin in cure to use this adapter built into octoprint
you've done so many videos on boards, whats the best one !
is there any way I could connect this to my octoprint server instead of using a usb connection? That would be really useful.
Michael the E3 links in description are both Ali. You meant for one to be Amazon I believe. Cheers!
Everything went smoothly until I tried the m115 command. I didnt get a response. Is there something I need to change in the firmware to allow it to communicate with the printer?
Bigtreetech skr 1.1 how to connect to esp8266? I try to connect, but is not work!
I bought the TFT35 tha wide screen version not the replacement one for the Ender3 and although I can get the ESP01 working standalone (Not connected tot he printer) whenever you plug it into the TFT35 it will not work, I think there is a pinout problem but I've not yet tried it with dupont jumper leads. So if you have the widescreen touch screen just be aware it might not be plug and play! Great video though.
hello I installed a new board on ender 3 but on the lcd it appears written (no printer connected) that could be already reviewed the material links I used was: BIGTREETECH SKR Mini E3 V2.0 - 32-bit control board with TFT35 E3 V3.0 pantalla touch RepRap Smart Controller repost panel for printer ender 3 ..... I can only work with Marlin bugfix 2.0.x 2020-23-03 has 2 systems installed ... Marlin and Bigtreetech touch mode ....
hi everybody, index.html.gz or even index.html no matter which one i try both show up as a 2KB file instead 100.51KB file like shown in the Video after upload. tried 3 different ESP01 boards. All the same issue. Any Idea????
hmm i got a second printer and wanted to try this rather than octoprint since it was so much cheaper but i cant get it to do anything. I got the firmware flashed and the web files uploaded and can connect with my pc (wired CAT6) and phone (wifi) and go through preferences and have set a static IP and all but it does not "see" any info from printer and cannot move any axis or heat the bed. I am running it on a Sovol SV01 with a skr mini e3 v2 and the tft35 with the module plugged into the tft.
On the printer tab i clicked refresh and then only get the words Label, Value, and Help with a thin black outline like they are buttons but thats it?
Can I flash esp01 without this usb flasher? for example with arduino ? I have SKR 1.3 and tft35 v3..
14:35 I'm having a somewhat difficult time understanding his (the github author) English, but is he basically saying to increase the speed of the file transfer rate over wifi of the printer is to not use that specific wifi module and to use another one that is a SD version?
Second question: What does OctoPi offer that this doesnt? I'm a noob, so I have no idea what OctoPi does. From what I've seen in this video its pretty impressive.. The fact it has a camera (video?) option makes this a pretty sweet add-on.
He has an entire Octoprint video. The camera settings in it, like time-lapse, are so much more advanced. Plus, with hundreds of plugins, there is unlimited potential to do more. Get a Raspberry Pi, control your printer, and when you inevitably get more, it will control those as well, from your phone app.
muito obrigado!!!
Can the ESP8266 or ESP32 module be used with Creality 4.2.2 board (Ender 3)?
If so, can you please make a video?
Michael could you make a DuPont crimping tutorial? I bought a kit and the pliers but man is it hard!
Its not fun for me and my big hands also. I found the if I close the crimper to the first locking click. I then clip the forming strip between fitting leaving it on the fitting I want. Using needle nose players I can fit the fitting into the crimper and the remaining forming strip holds it in the correct position. Once crimped break off the strip. You may need to do a little forming on the larger section the get it to fit
hello. what is the conector to attacch the BTT mini ups 24v to the TFT35 E3???
Hey Michael,
How would I go about programming the BTT ESP-12S (ESP8266) modules for the SKR 2.0 Rev B STM32F429VGT6?
Are "platform", "platform_packages", and "board" correct?
[env:esp8266]
;esp8266 core 2.5.2
platform = espressif8266@2.2.0
platform_packages = toolchain-xtensa@2.40802.200502
board = esp12e
framework = arduino
monitor_speed = 115200
monitor_flags = --echo
monitor_filters = colorize
; set frequency to 160MHz
board_build.f_cpu = 160000000L ; Default 160000000L
; set frequency to 40MHz
board_build.f_flash = 40000000L
board_build.flash_mode = dout
upload_resetmethod = nodemcu
build_flags =
-Wl,-Teagle.flash.4m4m.ld
-D PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
-DNONOSDK221=1
-DNDEBUG
-DVTABLES_IN_FLASH
upload_speed = 115200
lib_ignore =
AsyncTCP
ESP32NetBIOS
ESP32SSPD
I have SKR Mini V2.0 and TFT35-E3 V3.0 with latest firmware. Everything works except SD Upload fail with Error: Error: No Checksum with line number, Last Line: 1 Resend: 2
Any tips?
I have a problem
I have uploaded the esp3d.bin but when i connect ESP01s to my SKR pro 1.1 board no additional "SSID ESP3D" wifi conection appers.
Please help.
I've the same issue :-(
I am running into trouble with the btt writer where it is looking for drivers but I don't know how to install them
Will you be adding this to your Prusa Mini seeing as this is the WiFi chip for that as well?
It is possible to do only with a SKR e3 mini 1.2? How to connect the esp01?
can you get reprap fw working with this wifi adapter? or will you need one that connects to the exp ports on the board? I recently got a biqu b1 printer and i would like to get reprap going like it does on my ender 3 with the biqu e3 rrf board that has built in wifi.
you don't need the writer, you can use the sd card slot of the SKR PRO 1.1 to flash the ESP01S
RomanoProductions
Than tel me how ?
First of all how should be the jumpers on skr pro board configured
Than are there any marlin settings required before flashing esp01s from sd card ??