• Webduino USB port is only used to power the board, not for upload and monitoring
• The chip is labelled ESP8266MOD by AI Thinker, in fact it is an ESP-12F, same as Wemos d1
• Official Intro

Plug Webduino Smart using FTDI 3.3v module

         3.3    3.3
  ftdi   Tx     Rx    Webduino
         Rx     Tx
         Gnd    Gnd

For flashing, on Webduino Smart connect GPIO 0 to GND. (RGB goes green)

For rebooting, on Webduino Smart connect RST to GND

Flashing usual sequence is :

1. Set flash position (GPIO0 on GND)
2. Power the FTDI and the Webduino
3. Upload sketch … Webduino should restart in normal mode
4. Disconnect flash position (GPIO0)
5. Disconnect FTDI
6. RST or repower the FTDI

Select Board : “Generic ESP8266 Module”

Got it to work as a Wemos d1 !

  [env:d1]
  platform = espressif8266
  board = d1
  framework = arduino

I could not get it to work yet :/

I got blink sketch using LED_BUILTIN (2)