meshtastic-firmware/variants/diy/platformio.ini

; Meshtastic DIY v1.1 new schematic based on ESP32-WROOM-32 & SX1262/SX1268 modules
[env:meshtastic-diy-v1.1]
extends = esp32_base
board = esp32doit-devkit-v1
build_flags =
  ${esp32_base.build_flags}
  -D DIY_V1
  -D EBYTE_E22
  -I variants/diy/v1_1