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ESP3D/wiki/Cheap-ESP-12F-based-serial-wifi-module.md
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We can flash our loved ESP3D to cheap ESP-12F based serial wifi module (eg from aliexpress ). It contains built in 2way levelshifter/bi-directional logic level converter. So we can power and use via 5V uart from the 3d printers' motherboard.

  • We need to manualy ground the IO0 while powering up to start in flash mode while powering up (there is no switch for that, neither for reset)
    • wiring
  • I used FTDI adapter as usb2serial
  • We have to see in console/serial monitor boot mode is (1,7).
    • baudrate: 74880
    • rst cause:2, boot mode:(3,7)
  • Then flash like other esp based board for esp3d