Connects and buttons:

1. Power/communication connector: Used to power board and use the UART
2. Deck port: Crazyflie 2.X expansion deck connector (doc)
3. SWD: Debug port (not mounted)
4. ON/OFF/BOOTLOADER: Press and hold during startup to enable bootloader
5. UF.L: 2.4Ghz antenna connector (for nRF)
6. nRF LEDs: nRF controlled LEDs
7. STM32 LEDs: STM32 controlled LEDs
8. DWM1000 LEDs: DWM1000 controlled LEDs
9. uSB power and data: Full-speed USB interface
10. M3 mounting holes: The mounting holes used in the enclosure
11. Power: Extra 2.54mm spaced power connector (not mounted)
12. USART: Extra 2.54mm spaced UART connector (not mounted)

nRF controlled LEDs:

• D7:
• D8:

STM controlled LEDs:

• D1:
• D2:
• D11:
• D12:

DWM1000 controlled LEDs:

• TX: Transmitting
• RX: Receiving
• SFD: Received packet timestamp
• RXOK: Packet received without error