BrotherHobby ELRS 2.4GHz / 915MHz NANO RX ExpressLRS Receiver, IPEX1, 4V-5V, 12mm*19mm

Overview

BrotherHobby ELRS 2.4GHz/915MHz NANO RX is an ExpressLRS Receiver (ExpressLRS Receiver) designed as a nano-size diversity receiver with dual RF chips for RC applications. It is offered in ELRS 2.4GHz Nano RX and ELRS 915MHz Nano RX versions and supports CRSF (Crossfire serial protocol) communication with compatible flight controllers.

Key Features

• 2.4GHz/915MHz diversity receiver design with dual RF chips
• Main control chip: ESP8285
• Temperature compensated crystal oscillator (TCXO)
• ELRS 2.4GHz Nano RX: integrated PA+LNA (supports up to 100mW feedback power)
• Antenna connector: IPEX1 (board diagram labels IPEX MHF)
• Pin pads labeled: G (GND), 5V, TX, RX

Specifications

Actual Test Power of the Receiver

Note: A little low on the 50mw but within 0.5dB.

Wiring & Setup Notes (CRSF)

• ExpressLRS uses the Crossfire serial protocol (CRSF) to communicate between the receiver and the flight controller board.
• Enable the corresponding UART (example shown: UART2) as Serial RX in Betaflight Configurator (Ports tab).
• In Betaflight (Configuration tab), select Serial-based receiver and choose CRSF as the protocol.
• Telemetry is optional and can reduce stick update rate due to transmit slots used for telemetry.

LED Status Indication

• Plug in and unplug nano receiver three times.
• Ensure the LED is doing a quick double blink (bind mode).
• Put the RF TX module or radio transmitter into binding status (sends a binding pulse).
• If the receiver has a solid light, it is bound.

Note: Binding once and the receiver will store the binding information. Re-power and the receiver will connect successfully auto.

Whats Included

ELRS 2.4GHz Nano RX packaging content

• ELRS 2.4GHz Nano RX
• User Manual
• 4*30awg connecting line
• 2.4GHz dipole T-shaped antenna
• Heat Shrink Tubing*2

ELRS 915MHz Nano RX packaging content

• ELRS 915MHz Nano RX
• User Manual
• 4*30awg connecting line
• 915MHz dipole T-shaped antenna
• Heat Shrink Tubing*2

Applications

• ExpressLRS/CRSF receiver link for FPV drones and other RC models using a compatible flight controller
• Betaflight-based receiver integration via UART (Serial RX)

For pre-sales compatibility questions (frequency selection, antenna connector, wiring), contact support at https://rcdrone.top/ or support@rcdrone.top.

Details

The BrotherHobby ELRS Nano RX pairs ExpressLRS support with a diversity design using dual RF chips and compact IPEX antenna connections.

BrotherHobby ExpressLRS Nano RX options include 2.4GHz (100mW) and 915MHz (50mW) models with IPEX1 and 4–5V input in a 12×19mm size.

BrotherHobby’s ELRS 2.4GHz Nano RX features an integrated PA+LNA design and clearly labeled G/5V/TX/RX pads for straightforward wiring.

BrotherHobby Nano ExpressLRS receiver includes an IPEX antenna connector and clearly labeled G, 5V, TX, and RX pads for straightforward wiring.

The ExpressLRS nano receiver uses an ESP8285 main control chip for core processing and control.

BrotherHobby ELRS nano diversity receivers for 2.4GHz/915MHz use a compact PCB layout with an IPEX1 antenna connector and solder pads for easy wiring.

The BrotherHobby ExpressLRS nano receiver uses a compact PCB with clearly labeled G/5V/TX/RX pads and an IPEX1 antenna connector for clean wiring.

The ELRS Nano RX test results list expected vs actual output power at 10mW, 25mW, 50mW, and 100mW for both 2.4GHz and 915MHz versions.

BrotherHobby ELRS nano RX wiring pads are clearly labeled for RX, TX, 5V, and GND, with an IPEX antenna connector and firmware upgrade button on the board.

The ELRS Nano receiver connects to the flight controller via 5V, GND, and a UART TX/RX pair, with Serial RX enabled and CRSF selected in Betaflight.

The Nano receiver LED indicators help confirm connection, binding mode, connection failure, or WiFi upgrade status during setup.

The BrotherHobby ExpressLRS Nano RX package includes the receiver board, an IPEX1 T-shaped dipole antenna, a 4-wire 30AWG lead, a manual, and two heat-shrink tubes.