HappyModel ES900TX ES900RX 915Mhz 868MHz ExpressLRS ELRS RF Module Receiver Set RC Airplane FPV Long Range Drone Parts

Notice: The New version ExpressLRS hardware 868MHz/900MHz TX and RX module-ES900TX and ES900RX coming out which is instead ES915TX and ES915RX due to shortage of SMT32 chips. ExpressLRS development will release the new target for ES900TX and ES900RX soon.

ES900TX and ES900RX modules are a set of Long Range 915MHz/868MHz(optional) wireless transmission equipment developed and designed based on the open source software ExpressLRS. This set of modules is characterized by ultra-long range stable operation and low latency. The module is compatible with most Opentx remote controllers especially suitable for Radiomaster TX16S and Jumper T12 T16 T18 series remote controllers basically plug and play. We have specially customized the heat sink for the transmitter module and also reserve the installation position of the 2006 fan which can help the transmitter module to operate stably under high power conditions.

New ES900TX module coming with a 2006 Fan it would working automatically when the TX power is 250mw.

Source on GitHub: 

ExpressLRS community:

As ExpressLRS firmware is constantly being improved and updated we strongly recommend that you use the ExpressLRS configurator update firmware to get the best experience

Configurator 

Firmware 

New version ES900TX and ES900RX kit Package include:

ES900 TX module x1(868MHz or 915MHz optional)

ES900 RX module x1(868MHz or 915MHz optional)

TX antenna x1(868MHz or 915MHz optional)

RX antenna x2(868MHz or 915MHz optional)

Molding JR Bay mounted case for TX module x1

Heat sink x1

Adapter wire x1

2006 Fan x1

ES900TX Package include

ES900 TX module x1(868MHz or 915MHz optional)

TX antenna x1(868MHz or 915MHz optional)

Molding JR Bay mounted case for TX module x1

Heat sink x1

Adapter wire x1

2006 Fan x1

ES900RX Package include

ES900 RX module x1(868MHz or 915MHz optional)

RX antenna x2(868MHz or 915MHz optional)

Specifications:

ES900TX:

MCU:ESP32+ESP8285

Dimension: 55mm*39mm*11mm

Weight: 9.2gram (only the TX module)

Antenna connector: SMA

VCC input: 5~13v Recommend 5v~9v

RF Frequency optional: 915mhz or 868mhz(EU)

Maximum Output Power: <33dBm(For >27dBm operation  we recommend add a fan for force cooling)

Wifi update firmware function for ES900TX would be available in a short time.

ES900RX:

MCU:ESP8285

VCC input: 5v

Operation current: ~100Ma

Rx To FC protocol: CRSF

RF Frequency optional: 915mhz or 868mhz(EU)

Dimension: 12mm*12mm*3mm

Weight: 0.60 gram (exclude antenna)

Antenna connector:  IPEX1

Telemetry output Power: <17dBm

RC7 Firmware for ES900RX download:

ES915RX(Discontinued):

MCU:STM32F103RBH6

VCC input: 3.7~24v  Recommend 5v~12v

Operation current: ~100Ma

Rx To FC protocol: CRSF

RF Frequency optional: 915mhz or 868mhz(EU)

Dimension: 16mm*10mm*3mm

Weight: 0.70 gram (exclude antenna)

Antenna connector:  IPEX4

Telemetry output Power: <17dBm

ES915TX(Discontinued):

MCU:STM32F103C8T6

Dimension: 55mm*39mm*13mm(include heat sink)

Weight: 23gram (exclude antenna)

Antenna connector: SMA

VCC input: 5~13v Recommend 5v~9v

RF Frequency optional: 915mhz or 868mhz(EU)

Maximum Output Power: <33dBm(For >27dBm operation  we recommend add a fan for force cooling)

RC7 Firmware for ES915TX ES868TX download:

Bind procedure:

1. Supply power to the ES900RX wait until the red LED on the ES900RX are off immediately turn off the power and then repeat again the above steps. When the ES900RX is powered on for the third time the red LED light will start to double flash quickly which means that the ES900RX enters the binding mode
2. Insert the ES900TX or ES915TX module to Radio transmitter and choose External RF mode to CRSF protocol then you can find ELRS menu from the Radio systems Enter into ELRS and press [Bind] the Red LED on the ES900RX module will turning off then start blinking slowly and finally getting to be solid this means bind successfully.

ES900RX firmware update by wifi procedure:

1. Make the ES900RX enter into Bind mode and then wait around 1 minute and don’t bind with it then the ES900RX would get into Wifi mode automatically you could connected the wifi hot pot “ExpressLRS RX” by enter the password “expresslrs”
2. Visit the firmware update website by enter “10.0.0.1” and choose the correct firmware then click “update” wait for around 1~2 minutes the update progress would finished and you can find “firmware update successful and reboot” that means update is finished.