SpeedyBee F405 Mini BLS - FCs Peripheral Connection; DJI Air Unit Cable Connection; SBUS Receiver Connection Notice; ELRS Receiver Connection Notice

FC’s Peripheral Connection
6/14
DJI Air Unit
7.4-26.4V
GND
RX
TX
GND
SBUS
9V
G
T1
R1
G
SBUS
Analog VTX
5V GND VIDEO IRC PGND 3.7-5V
Video
Video
GND
5V
5V
5V
IRC
IRC
GPS
SDA
SCL
TX
RX
GND
5V
CL
DA
4V5
G
T6
R6
5-36V
GND
Video
G/TX
M/RX
Model: Phoenix 2 Joshua Edition
5-36V
GND
Video
GND
Menu
Model: Phoenix 2
5-36V
GND
Video
Menu
5V
G
CC
CAM
CH2 RX
CH1 TX
5V
GND
Crossre Nano Rx
CH2
CH1
GND
5V
SBUS Receiver
GND
SBUS
SBUS
5V
ELRS Receiver
RX
TX
5V
G
TX
5V
G
RX
PPM
PPM Receiver
5V
4V5
GND
PPM
R2
Spektrum
Receiver
NC
S
T2
T2
GND
3V3
LED Strip
5V
GND
LED
Buzzer
BZ-
BZ+
G
3V3
Motor 4
Motor 3
Motor 2
Motor 1
470uF Low-ESR
Capacitor
XT30 Power
Cable
Note: In order to prevent the stack from being burnt
out by voltage spikes on powering up, it is strongly
recommended to use the Low ESR capacitor in the
package.
F405 Mini Flight Controller BLS 35A Mini V2 4-in-1 ESC
GND
BAT
M1
M2
M3
M4
CUR
TEL
N
S4
S3
S2
S1
VBTA
GND
CURRENT
Cable Connection vs DJI O3 Air Unit
Use the DJI 6-pin cable(80mm) comes with the F405 Mini stack(See the accessory No.6 in the
package section). Cut off the 6-pin connector and keep the 8-pin connector. Use the 8-pin
connector to connect to the DJI Air Unit V1, and then solder the other end to the flight controller.
Cable Connection vs RunCam Link/
Caddx Vista Air Unit
Use the DJI 6-pin cable(80mm) comes with the F405 Mini stack(See the accessory No. X in the
package section). Cut off the connectors on both ends and solder the 6 wires.
SBUS Receiver
Cable Connection vs DJI Air Unit V1
Impoant notice for SBUS receiver
Use the DJI 6-pin cable(80mm) comes with the F405 Mini stack(See the accessory No. X in the
package section). Cut off the 6-pin connector and keep the 8-pin connector. Use the 8-pin
connector to connect to the DJI Air Unit V1, and then solder the other end to the flight controller.
When using an SBUS receiver, the SBUS signal wire of the receiver must be connected to the SBUS
pad on the front side of the ight controller
(this pad internally uses UART2).
If you are also using the DJI Air Unit(O3/Link/Vista/Air Unit V1), you will need to disconnect the
SBUS signal wire from the Air Unit harness. Failure to do so will prevent the SBUS receiver from
being properly recognized by the flight controller. You can use tweezers to pick out the SBUS
wire from the 6-pin harness connector (or directly cut this wire) and insulate the exposed part
of the wire carefully.
Impoant notice for ELRS receiver
We recommend connecting the ELRS receiver's TX and RX to the T2 and R2 pads on the flight
controller. However, when using the DJI Air Unit simultaneously, some ELRS receivers may not
be recognized properly by the flight controller. If you encounter this issue, you need to
disconnect the SBUS signal wire from the Air Unit harness. You can use tweezers to pick out
the SBUS wire from the 6-pin harness connector (or directly cut this wire) and insulate the
exposed part of the wire carefully.
F405 Mini Flight Controller DJI O3/Vista/Link/Air Unit V1
Do NOT connect this wire
to assure the external
SBUS receiver work properly!
ELRS Receiver
7.4-26.4V
GND
RX
TX
GND
SBUS
RX
TX
5V
G
SBUS
5V
GND
F405 Mini Flight Controller DJI O3/Vista/Link/Air Unit V1
For some ELRS receivers, it
is necessa to disconnect
this wire in order to function
properly!
RX
TX
5V
G