Summary

GEPRC ELRS NanoSE receiver is a new generation remote control system developed based on the ExpressLRS open source project. ExpressLRS sets new standartds for long-range connection, low latency and Maximum refresh rate of 500Hz.

GEPRC ELRS NanoSE receiver operates at a frequency of 2.4 GHz. Compared with Nano receiver, NanoSE receiver uses an Integrated SMD ceramic antenna, which further reduces its size while ensuring signal reception, making it more suitable for use on drones with limited space and light weight.

Note:ELRS products now shipping have been pre-flashed with 2.x firmware. 2.x is not compatible with version 1.x, so you need to upgrade the transmitter to 2.x for proper frequency matching.

Specifications

Size:12.1mm*10.4mm
Weight:0.4g
Chips:ESP8285,SX1281
Frequency band:2.4GHz ISM
Refresh rate:25Hz-500Hz
Input voltage:5V
Antenna:Integrated SMD Ceramic Antenna

Features:

Small size
0.4g weight
WIFI Upgrade firmware
ELRS open source project, remote control
Integrated SMD Ceramic Antenna
Maximum refresh rate of 500Hz
The operation is simple

ELRS NanoSE Receiver Diagram

Package Included:

1 x NanoSE receiver
2 x Heat shrink tube
4 x Silicone cable(black, red, yellow, green)
1 x Pin (4pin)
1 x Instruction manual
1 x Sticker

LED Status indication

LED Status Indicator Meaning: Solid ON – Indicates connection established, Flashing Slowly – No TX signal detected, Flashing Quickly – In WiFi mode, Flashing Double Quickly – Binding in progress.

Instructions

ELRS NanoSE receiver and FC connection diagram:

Open Betaflight Configurator, go to “Ports”tab and enable the corresponding UART as a Serial Rx (e.g. UART2 as shown below). Save and restart.

On the”Configuration”tab, click on”Serial-based receiver”on the”Receiver”panel, and select “CRSF”

Configure a serial port via the ‘Ports’ tab, and select a receiver provider when using the RX_Serial feature.

Binding

FAQ

Q:Why GEPRC ELRS rx is always on and can not work when powered it up?

A:Recently, many users have reported that some F4 flight control Uart 2 ports are wired according to the crsf receiver in the manual, and the ELRS receiver is always on and can not work.

After data inquiry and test, it is determined that for the receiver with ESP chip, if the TX interface is placed at low Vil Mode,

This is not a bug in the firmware.

This problem is well known that some FCs cause the receiver TX line to go low at power on which forces the ESP into bootloader mode, hence the solid LED.

This is not a failure of the flight control or the receiver, but the ELRS project was not popular during the development of this part of the flight control models, and this problem was not optimized. The chips of ELRS and black sheep receiver are different, so the same crsf connection black sheep receiver can be used normally. The subsequent launch of flight control will solve this problem.

There are a couple of potential fixes/workarounds.

In addition, if there is a need for this part of flight control to use ELRS receiver, try the following methods:

1. Power on repeatedly for several times (low efficiency)

2. Remove some components on the flight control (high risk)

3. Add a pull-up resistor to port 2 (reply from the developer)
You can try is to add a small value (300ohm-1kohm) pull up resistor (to 3.3V) to the receiver TX line.

4. Change the version of flight control firmware (this problem occurs in some firmware of version 4.2)

5. ELRS receiver is connected to port 1, which can be used normally (Troubleshooting perfectly)

More details please check the link below:

https://github.com/ExpressLRS/ExpressLRS/issues/655