iRangeX IRX4 Lite 2.4GHz 4-in-1 STM32 Multiprotocol TX Module

The IRX4 is a Multiprotocol Module (MPM) designed for use with FrSky X-Lite radios and other radios with a X-Lite style module bay.

If you have been in this hobby for a while, you will likely have amassed quite a collection of RC models and not necessarily all of them bound to the same radio control, so probably a collection of radios too. That’s where this multiprotocol TX module will come in handy. It incorporates four RF chips into one transmitter module and supports pretty much all of the communication protocols used in the RC hobby so that you can control everything from a single radio. It supports pretty much all of the communication protocols used in the RC hobby, enabling it to control aircraft with Spektrum, FrSky, Flysky, Futaba, Hubsan, Syma, Bayang and many more other types of receivers. This module will also be useful to FrSky users that require support for D8 – latest FrSky ACCESS radios have removed support for the D8 protocol, this module can be used with ACESS radios and brings back compatibility with D8.

The Module features a STEM32 microcontroller (MCU), which has enough on-board storage space to store all of the protocols you need without having to re-flash it. Should you need to update it, it has an active Bootloader so can be re-flashed via USB. This module is compatible with the Multi-module project on github. All available protocols are included in serial mode. In this mode, it uses a serial protocol to communicate with your transmitter. The serial protocol does not require any hardware modifications, but you should update the firmware on your transmitter to the latest. Then the model protocol selection and binding is done from the Model Settings menu on your transmitter. For telemetry capable transmitters, the telemetry integration is done seamlessly with the transmitter firmware.

Setup Serial Mode:

The operation mode can be used by transmitters that operate with OpenTX 2.2.X, so all FrSky transmitters and other brands too. OpenTX 2.2.X has special support for the iRangeX IRX4 Lite that allows the protocols to be easily selected from the transmitter SETUP menu or Companion.

• Install module into transmitter’s external module bay
• Ensure radio is flashed with OpenTX version 2.2.X (Firmware Download) (Flashing Guide)
• Serial mode is selected by placing the rotary switch to position 0 before powering on the radio.
• Set default Channel Order (Radio Setup Menu) to AETR
• In the Setup Menu, disable Internal RF “OFF” and Enable External RF
• For the External RF Mode select “Multi” then select the required Protocol to match your model
• Enable Auto Bind for supported models
• For more information, please refer here

RF Chips: CC2500, NRF24L01, A7105 and CYRF6936

Supported Protocols:

• Flysky (Generation I protocol, based on A7105, tested)
• Hubsan (Based on A7105, tested)
• Frsky (Based on CC2500, tested)
• Hisky (Based on 24L01, tested)
• V2x2 (Based on 24L01)
• DSM2 / DSMX (Based on CYRF6936, tested)
• Devo (Based on CYRF6936, tested)
• YD717 (Based on 24L01)
• KN (V977,Based on 24L01, tested)
• SymaX (Based on 24L01)
• SLT (Based on 24L01)
• CX10 (Based on 24L01)
• CG-023
• BAYANG
• SIMAX5C

Compatible Transmitter:

• FrSky X Lite Radios: X-Lite, X-Lite Pro, X9 Lite, X9 Lite S,
• Tango 2 with Module Bay Add-on