Wifi SD card for 3D printer without programmer on board.

https://github.com/ardyesp/ESPWebDAV

https://3dtoday.ru/blogs/massaraksh7/sd-karta-s-wifi-na-esp8266-dlya-3d-printera-plug-and-play

R0603

R1, R2, R3, R7 = 1K

R4, R5, R6 = 10K

C0805 = 100n

ESP12F

MicroSD holder - TF-01A

PCB Thickness = 1.6 mm

This project is a WiFi WebDAV server using ESP8266 SoC. It maintains the filesystem on an SD card.

Supports the basic WebDav operations - PROPFIND, GET, PUT, DELETE, MKCOL, MOVE etc.

Once the WebDAV server is running on the ESP8266, a WebDAV client like Windows can access the filesystem on the SD card just like a cloud drive. The drive can also be mounted like a networked drive, and allows copying/pasting/deleting files on SD card remotely.

3D Printer

I am using this setup as a networked drive for 3D Printer running Marlin. Following circuit with ESP8266 and a MicroSD adapter is fabricated on a PCB. A full size SD card adapter is glued to one end and provides access to all SPI data lines from printer. ESP8266 code avoids accessing micro SD card, when Marlin (printer's firmware) is reading/writing to it (detected using Chip Select line).

GCode can be directly uploaded from the slicer (Cura) to this remote drive, thereby simplifying the workflow.