ExpressLRS on your phone

Features

• Find and join

  On Android the app searches for the ExpressLRS hotspot and joins it for you.

• Binding phrase

  Set or change the binding phrase so receiver and module pair without the bind button.

• Model match

  Set the model match id so the receiver only answers the right model on your radio.

• Firmware update

  Upload new receiver or module firmware over Wi-Fi.

• Options and backpack

  Runtime options, output power and backpack settings.

• Lua menu

  The ExpressLRS Lua script's module and receiver settings through an EdgeTX radio, a Betaflight flight controller or a USB-serial adapter.

Why use a phone for ExpressLRS

The ExpressLRS Configurator desktop app is the official way to build and flash ExpressLRS firmware, and it remains the right tool for first-time flashing and custom builds. Day-to-day jobs, changing a binding phrase, setting model match or checking a receiver's version, are quicker from a phone at the field.

The official web UI on the receiver is also available from inside FlySpark, when you need a page FlySpark does not show.

Through the flight controller

If the receiver is wired to a Betaflight flight controller, the app can reach it through passthrough over USB, with no Wi-Fi needed. The ELRS Lua menu tool shows the same settings the radio's Lua script shows, for the module and the receiver.

Try it now

Open the demo in your browser to explore a simulated receiver with binding phrase, model match and firmware screens. Then install the app to work with real hardware. For the flight controller side, see the Betaflight configurator.

How to change an ExpressLRS binding phrase from a phone

1. Install the app. Install FlySpark from Google Play or the App Store.
2. Start Wi-Fi mode. Power the receiver and wait for Wi-Fi mode, or start it from the Lua menu.
3. Connect. Open ExpressLRS in FlySpark. On Android it joins the hotspot itself; on iPhone join it in Settings first.
4. Set the phrase. Enter the binding phrase, save, and repeat on the transmitter module.

Frequently asked questions

Can I configure ExpressLRS in a browser?

Not through FlySpark's web version: a web page cannot join the receiver's Wi-Fi hotspot. Use the FlySpark app, or the receiver's own web page from your phone's browser after joining its hotspot.

Can I flash ExpressLRS firmware from my phone?

Yes, over Wi-Fi for receivers and modules that are already running ExpressLRS. First-time flashing over UART is best done with the ExpressLRS Configurator.

Does it work on iPhone?

Yes. Join the ExpressLRS hotspot in the iPhone's Wi-Fi settings, then open FlySpark.

Can I try it without a receiver?

Yes. The browser demo includes a simulated ExpressLRS receiver.

Related tools

• EdgeTX radio tools on your Android phone

  Edit EdgeTX models, back up and restore the radio's SD card, manage Lua scripts and flash EdgeTX firmware from your Android phone over USB.

• Betaflight Configurator in your browser and on your phone

  Set up Betaflight in your browser or on Android: ports, PIDs, rates, OSD, modes, presets and CLI over USB or Bluetooth. Free, with a no-hardware demo.

• Firmware flasher for Betaflight, INAV, ArduPilot and PX4

  Flash Betaflight, INAV, ArduPilot and PX4 firmware from your Android phone over USB OTG. DFU and bootloader support, with a settings backup first.

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