Happymodel 2.4GHz ELRS Nano series receiver is based on ExpressLRS open source architecture and program, features ESP8285 MCU. Therefore, you can upgrade the firmware via WIFI, which is very user-friendly.
To flash the firmware, Power up the receiver while keeping the transmitter turned off. After a while, you can find the ExpressLRS hotspot. Connect to this hotspot using a PC or mobile phone. The password is expresslrs, then you can visit 10.0.0.1 to upload the firmware
Low latency and high refresh rate makes it very suitable for FPV racing and long range FPV cruising while being ultra-light and ultra-small, making them very suitable for Tinywhoop.
With this tiny teeny receiver you can achieve great range even comparable to crossfire or Tracer, ghost. Don't just take my word for it, search Crossfire vs expresslrs on youtube and hear what Joshua Bardwell has to say.
EP1 ELRS receiver is the hottest ExpressLRS receiver since it was released. Now the new TCXO version EP series receiver features a "temperature compensated crystal oscillator", accurate frequency and excellent performance in extreme temperature environments making these TCXO much more reliable.
Type: ISM2.4GHz
ESP8285 MCU
SX1280(SX1281)IMLTRT RF Module
Omni directional antenna
Frequency Range: 2400 MHz to 2500 MHz
Receive refresh rate: 25HZ~500Hz
Working voltage: 5v
Weight: 0.41 gram(without antenna)
Dimension: 10mm*10mm*6mm
Peak gain: 2.23dB
Default Firmware: HappyModel_EP_2400_RX V3.0.1 version
Built-in TCXO (temperature compensated crystal oscillator)