Specifications
- ESP32-PICO-D4, SX1281, ExpressLRS Firmware
- PA/LNA: AT2401C
- RF Frequency: 2.4GHz ISM
- Telemetry power: 20dbm (100mW)
- True Diversity
- Receiver protocol: CRSF
- Antenna connector: IPEX MHF-1
- Power supply: 4-13V DC @ “V” Pad
- Power dissipation: 100mA~170mA@5V IN
- PCB size: 28mm x 16mm
- Weight: 4g w/ antenna
- Packing:
- 1x ELRS-R24-TD
- 2x IPEX MHF1 Antennas. 15cm
RGB LED Status
- [Rainbow fade effect], Starting Up
- [Green heartbeat], Web update mode enabled
- [Slow blink 500ms on/off ], Waiting for connection from transmitter
- [Red flashing 100ms on/off], Radio chip not detected
- [Orange Double blink then pause], Binding mode enabled
- [Orange Triple blink then pause], Connected to transmitter but mismatched model-match configuration
- [Solid single color Connected to a transmitter], color indicates packet rate
- in Boot mode, RGB LED doesn’t light up.
Firmwares
- ExpressLRS, wiki, Click HERE
- Receiver Target: Generic targets used as a base 2.4 GHz > > Generic ESP32 True Diversity PA 2.4Ghz RX
- Receiver has ExpressLRS 3.3.2 preloaded with binding phrase “123456”, the Receiver will never enter binding mode if using the traditional binding procedure.
- You need to reflash it with your binding phrase OR connect it to your PC/phone via WiFi and set your binding phrase in WebUI.
Tips
- Full Resolution Switch Configuration Modes
- Powering receiver with Reverse Voltage will damage the regulator chip. DOUBLE CHECK the power wires connected to the receiver.
Flashing via Wifi
- Power on receiver. RGB LED Rainbow fade effect at first, then Slow blink 500ms on/off. after 20s, Green blink indicating it’s on Wifi Hotspot Mode.
- Wifi SSID “ExpressLRS RX”, Password “expresslrs”
- More detailed steps, pls refer this page.
Flashing via UART
- Wire the receiver into the USB-TTL adapter, with TX on receiver connected to the Rx on the USB-TTL, and RX on receiver connected to the Tx of the USB-TTL. Wire 5V and GND of the USB-TTL to 5V and GND of the Receiver.
- Press the boot button while powering on the receiver, then release – the RGB LED will not turn on.
- Configurator 1.6.x or newer, Select the target Generic targets used as a base 2.4 GHz –> Generic ESP32 True Diversity PA 2.4Ghz RX and “UART” for Flashing Method, set your bind phrase and Firmware Options , Check “erase before flash” and “Force FLash “.
- Web-flasher https://expresslrs.github.io/web-flasher/
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