Listing my default configs for my boards :chip:

platformio_boards.ini

[env:mxchip_az3166]
platform = ststm32
framework = arduino
board = mxchip_az3166
monitor_speed = 115200

[env:d1_mini]
platform = espressif8266
board = d1_mini
framework = arduino

[env:attiny85]
platform = atmelavr
board = digispark-tiny
framework = arduino

[env:nanoatmega328]
platform = atmelavr
board = nanoatmega328
framework = arduino

[env:sparkfun_promicro16]
platform = atmelavr
board = sparkfun_promicro16
framework = arduino

[env:lolin32]
platform = espressif32
board = lolin32

#ESP-WROOM-32
## WiFi/BT/BLE
[env:esp32dev]
platform = espressif32
board = esp32dev

[env:bbcmicrobit]
platform = nordicnrf51
board = bbcmicrobit

[env:nodemcu]
platform = espressif8266
board = nodemcu