RadioMaster XR2 User Manual

2.4
GHZ
7mm 6mm
SIDE
SPECIFICATIONS
•Item: XR2 Nano 2.4GHz ExpressLRS Receiver
•Type: ISM2.4
•MCU: ESP32C3
•RF Chip: Semtech LR1121
•Antenna: Integrated 2.4GHz Tower Antenna
•Frequency Range: 2.400 - 2.479GHz
•Telemetry Power: 10mW
•Maximum Packet rate: DK500Hz
•Minimum Packet refresh rate: 50Hz
•Working voltage: 5V
•Weight: 0.8g
•Dimension: 16mm * 12mm * 6mm
•Firmware Version: ExpressLRS v3.5.1 pre-installed
•Bus interface 1: CRSF
•Bus interface 2: UART
INCLUDES
1 * XR2 Nano 2.4GHz ExpressLRS Receiver
1 * CRSF Wire
3 * Heat-Shrinkable Tube
1 * Manual Card
DEFAULT FIRMWARE
RadioMaster XR2 2.4 RX
For more information, please visit the ELRS website:
https://www.expresslrs.org/2.0/
TOP
12mm
− 5V TX RX
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
Serial (via UART)
•
The UART for the rec eiver must be s et to 'Serial Rx' (in the Ports tab)
• Selec t the correc t data format from the drop-down, below:
CRSF
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
the receiver is in bind mode.
4. Power ON your transmitter/radio and use the [BIND] button
on the ExpressLRS Lua script, which sends out a binding pulse.
5. If the receiver has a solid light, it's bound!
XR2 Receiver User Manual
BOTTOM
ceramic
antenna
LR1121
2419
480309
−
RX TX 5V
RX TX 5V g
Configuration/MSP Serial RX
115200
115200
115200
Receiver Mode
Serial Receiver Provider
0.8
G
bind