RadioMaster XR1 User Manual

900
MHZ
u.Fl
RX
SPECIFICATIONS
•Type: ISM2.4 or FCC915
•MCU: ESP32C3
•RF chip: Semtech LR1121
•RF connector: IPEX-1
•Antenna: 1x T-Antenna (Either 2.4GHz, 900Mhz or
Dual-band depending on selected package)
•Frequency Range: 2.4GHz or Sub-G 900MHz
•Telemetry Power: 100mW
•Maximum Packet rate: DK500Hz / K1000Hz
•Minimum Packet refresh rate: 50Hz
•Working voltage: 5V
•Weight: 1.0g (without antenna)
•Dimension: 20mm * 13mm * 3mm
•Firmware Version: ExpressLRS v3.5.1 pre-installed
•Bus interface 1: CRSF
•Bus interface 2: UART
INCLUDES
1 * XR1 Nano Multi-Frequency ExpressLRS Receiver
1 * T Antenna (Either 2.4GHz, 900Mhz or Dual-band
depending on selected package)
1 * CRSF wire
3 * Heat-Shrinkable Tube
1 * Manual Card
DEFAULT FIRMWARE
RadioMaster XR1 2.4/900 RX
For more information, please visit the ELRS website:
https://www.expresslrs.org/2.0/
TOP
led
SX1276
2419
480309
1
bind
TX 5V g
CONFIGURATION
Identifier
USB VCP
UART1
UART2
Open Betaflight Configurator, go to Ports tab and enable the corresponding
UART as a Serial RX (e.g. UART2 as shown above)Save and Restart.
Receiver
On the Configuration tab, click on Serial-based receiver on the Receiver
panel, and select CRSF.
TRADITIONAL BINDING
Binding Phrase field must be uncommented in Device options on the RX.
1. Power OFF your transmitter/radio.
2. Plug in and unplug your receiver 3 times.
3. Make sure the LED is doing a quick double blink, which indicates
4. Power ON your transmitter/radio and use the [BIND] button
5. If the receiver has a solid light, it's bound!
XR1 Receiver User Manual
BOTTOM
13.3mm
115 mm
Configuration/MSP Serial RX
115200
115200
115200
Serial (via UART) Receiver Mode
•
The UART for the rec eiver must be s et to 'Serial Rx' (in the Ports tab)
• Select the correc t data format from the drop-down, below:
CRSF
Serial Receiver Provider
the receiver is in bind mode.
on the ExpressLRS Lua script, which sends out a binding pulse.
2.4
GHz