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Team Blacksheep CROSSFIRE - Crsf; Serial; Sbus; N.I. SBUS

Team Blacksheep CROSSFIRE
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Receiver pin
Output type Micro V2/ Nano rx
Default value
1
PWM Ch1 to 12, PPM, RSSI, LQ, RSSI/LQ, SBUS, n.i. SBUS,
CRSF TX, MAVLink TX, SmartAudio, DSMX
CRSF TX
2
PWM Ch1 to 12, PPM, RSSI, LQ, RSSI/LQ, CRSF RX,
MAVLink RX
CRSF RX
3
PWM Ch1 to 12, PPM, RSSI, LQ, RSSI/LQ, CRSF RX,
MAVLink RX
PWM Ch. 3
4
PWM Ch1 to 12, PPM, RSSI, LQ, RSSI/LQ, SBUS, n.i. SBUS,
CRSF TX, MAVLink TX, SmartAudio, DSMX
Smart Audio
5 (BST)
PWM Ch1 to 12, RSSI, LQ, RSSI/LQ, BST SDA
BST SDA
6 (BST)
PWM Ch1 to 12, RSSI, LQ, RSSI/LQ, BST SCL
BST SCL
CRSf
CRSF is a protocol designed by Team BlackSheep and championed through the TBS Crossfire remote
control system. It has been integrated into most popular remote controls, is an incredibly high bandwidth
(low latency) full duplex, serial data transmission protocol. It comes with native functionality such as OTA
(over the air) firmware upgrades, localized configuration menus and a smart routing protocol.
CRSF can be selected on multiple outputs at the same time to connect several devices at once
Serial
The bridge feature gives you the ability to pass any kind of serial uart data from any device connected to
the receiver to any device connected to the transmitter. If you selected “Bridge TX” on a capable pin the
following pin will be set to “Bridge Rx” and the following to “Bridge RTS” (if not used by any other Serial
protocol). Please connect your device according to this information. The baud rate is set to 57600 8N1 and
the voltage level is 3.3V only. The RTS pin will change to logical high when the internal FIFO is almost full
and low if the FIFO is almost empty. There is no hardware flow control for the uplink as the wireless close
range telemetry module does not support it.
SBUS
SBus is the signal that is used by FrSky and other brands. The signal is inverted, which means on a F4 FC
you need to use a pad with a built-in signal inverter. Those pads are mostly label with “SBus” on your FC
N.i. SBUS
Not inverted SBUS is the same as SBUS except that the signal is not inverted. This can be used for FCs that
have no signal inverter built in and require SBus as input signal.
41

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