expresslrs ExpressLRS V3.6.0

[WaF Bot]

The ExpressLRS development team is excited to announce a new release, and we want to extend a huge thank you to RadioMaster RC and Semtech Semiconductor. Their invaluable support was crucial in enabling Listen Before Talk (LBT) functionality for LR1121 modules.

This update includes a new binary for the LR1121 chip. The first time you power on your device with this new version, the LR1121 chip(s) will be updated to firmware version 1.0.4. This new firmware contains optimized commands that give us the necessary performance to bring LBT to all devices using the LR1121 chip.

Big News

• LR1121 LBT Support #3267

Other Features

• New HoTT Telemetry sensors #3272
• ESP32C3 TX module support, for RX as TX #3277

Bug Fixes

• Fix PWM/serial pins not defaulting correctly #3264
• Fix VTX commands not being processed #3270
• Fix DShot overflow issue #3274
• HoTT TLM: fix ESC frame definition by #3281
• Use wifi MAC as default UID for ESP8285 TX, for RX as TX #3287
• Fix not being able to bind when TX on 50Hz packet rate #3291
• Fix dShot safety issue on PWM receivers #3300
• Constrain PPM handset to CRSF limits (prevent integer underflow) #3303

Full Changelog: 3.5.6...3.6.0

Compatibility

This is a minor feature release and is compatible with earlier 3.x versions.

Who should update from V3.5.x?

This update is recommended for everyone, but particularly for all our friends in the EU that have been waiting for LBT support for their Nomad, GX12, TX15 or similar radios and receivers with the LR1121 chip.

Reverting to older firmware

If you are flashing back to versions prior to 3.6.0 it will be a multi-step process.

1. First flash the older firmware as usual
   • When the TX or RX is restarted, it will flash the "Bad Radio" code.
2. Download the LR1121 firmware from https://github.com/Lora-net/radio_firmware_images/blob/master/lr1121/transceiver/lr1121_transceiver_0103.bin
3. The wifi access point will have started, navigate to http://10.0.0.1/lr1121.html and upload the firmware from the previous step to each LR1121 chip on the module.
4. Reboot and enjoy the older firmware

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