RADIOMASTER ER6G Receiver User Manual

: August 8, 2024
: Radiomaster

Table of Contents

RADIOMASTER ER6G Receiver
Product Usage Instructions
FAQ
Wiring Diagram
SPECIFICATIONS
Documents / Resources

RADIOMASTER ER6G Receiver

Specifications

Dimensions: 42 x 13 x 8mm
Weight: 5g
Input Voltage: DC 3.5 – 8.4V
Antenna Length: 15cm (High Sensitivity Antenna)
Firmware: ExpressLRS 3.3.0 (pre-installed)
Channels: 6CH PWM max. 50mw (LUA Adjustable)
Servo Compatibility:
- Standard servos
- Performance servos
Packet Rate:
- 100Hz Full
- 333Hz Full
Telemetry Ratio:
- Std (1:32) default
- Std (1:128)
Switch Mode : 8ch
Device Category: Radiomaster 2.4Ghz | Device: RadioMaster ER6G

Product Usage Instructions

Access the recommended ELRS LUA settings on the remote-control end.
Adjust settings as needed based on your preferences.
Ensure external voltage input does not exceed 35V to prevent receiver damage.
Solder a wire to the EXT-V solder pad on the PCB and connect it to the positive wire of the battery or ESC.
Enable the WIFI option in ExpressLRS LUA and connect to the receiver’s WIFI using a mobile device or PC.
Select a unique bind phrase on the ExpressLRS web page and save settings.
Power on the receiver and wait for the LED to indicate WIFI mode.
Connect your device to the receiver’s WIFI and enter the bind phrase set on your radio.
Navigate to the TELEMETRY page on your radio and adjust the telemetry voltage settings to match the actual battery voltage in the model.

FAQ

What is the maximum input voltage for the EXT-V telemetry reading?
The maximum input voltage for the EXT-V telemetry reading is 35V. Do not exceed this limit to avoid damaging the receiver.
How can I bind my radio and receiver using a unique bind phrase?
To bind your radio and receiver, enable WIFI on both devices, select a unique bind phrase on the ExpressLRS web page, and ensure both devices have the same bind phrase set.
What should I do if my receiver’s LED does not indicate bind mode?
If the LED does not indicate bind mode, you can reset the receiver by holding down the boot button for 10 seconds and then follow the binding process again.

Wiring Diagram

The Radiomaster ER6G receiver has been specially designed for glider pilots who require a compact and slim receiver. It can drive up to 6 servos and has built-in receiver voltage telemetry and flight battery telemetry with the ability to automatically detect which voltage input to use. The ER6G features a dual-antenna with telemetry power up to 50mw. The ER6G receiver does not have a built-in altimeter for competitions that prohibit the use of vario. The ER6G can be used with a 1S Lipo receiver battery.

SET-UP

The recommended ELRS LUA settings on the remote-control end are:

IMPORTANT

The maximum input voltage for the EXT-V (external voltage input) telemetry reading is 35V. Do not exceed 35V or the receiver will be damaged.
The EXT-V of the ER6G is accessed via the EXT-V solder pad on the PCB. A single wire must be soldered to this pad and connected to the positive wire of the battery or ESC. If no EXT-V power source is found, the ER6G will default to reading the voltage on the receiver pins, only one voltage input can be used at any given time.
Please ensure that the power supply current of the ESC BEC matches the power consumption requirements of the servo used. If using high-voltage and high-torque servos, it is recommended to use a 2S 7.4V battery for direct power supply or a suitable high-current UBEC.
Calibration of the telemetry voltage will be required on your radio. Navigate to the TELEMETRY page on your radio and locate the RxBt sensor. Edit the SENSOR settings and adjust the offset until the displayed reading matches the actual voltage of the battery in the model. If there is a large difference, adjustment of the ratio may also be required. *For best results calibrate the voltage of your radio using a fully charged battery of the correct cell count intended for use in the model.
Channel 6 on the receiver must not be used as the power input channel and may out be used as a servo output channel. Power from an ESC or Receiver battery must only be applied on Channels 1 to 5.
ExpressLRS Arming requirements and the use of Channel 5: CH5 is required by ExpressLRS to set the Arm state of the RF module in your radio. It is recommended to assign CH5 to a switch such as your throttle cut switch as this will provide benefits such as dynamic power. Using the ExpressLRS LUA or the Wifi WebUI, you can assign different channels to the CH5 output of your receiver. See the example to the right: Please visit https://www.expresslrs.org/ to learn more on the importance of setting up arming.

SPECIFICATIONS

Size: 42138mm
Weight: 5g
Power Supply: DC 3.5 – 8.4V
Antenna Type: 15cm (High Sensitivity Antenna)
Wireless Protocol: ExpressLRS 3.3.0 (pre-installed)
Output Channel: 6CH PWM
Telemetry Power: max. 50mw (LUA Adjustable)
Telemetry Battery voltage detection range: DC 3.0 – 26V

FIRMWARE

Device Category: Radiomaster 2.4Ghz | Device: RadioMaster ER6G

PASSPHRASE BINDING

(*Note: Bind phrases are not secret and can be read.)

OPEN the ExpressLRS LUA and navigate to the Wifi Connectivity page. Select the Enable WIFI option and connect to your radio wifi with a mobile phone, tablet or PC (See TX WIFI info above). OPEN the ExpressLRS web page at (http://10.0.0.1/) and choose a unique bind phrase. Save and Reboot.
Power ON the receiver and wait 60 seconds for the LED to blink rapidly to indicate WIFI mode. Connect your phone, tablet or PC to the receiver’s WIFI (See RX WIFI info above). OPEN the ExpressLRS web page at (http://10.0.0.1/) and enter the matching bind phrase previously entered on your radio. Save and Reboot. Once both the radio and receiver have the same bind phrase set they will automatically bind.

TRADITIONAL BINDING

The first time you power on your receiver, the LED is doing a quick double blink, which indicates the receiver is in bind mode. If this is not the case, hold down the boot button for 10 seconds to reset the receiver.
Power ON your transmitter/radio and use the [BIND] button on the ExpressLRS Lua script, which sends out a binding pulse.
If the receiver has a solid light, it’s bound!

Note: To bind the receiver a second time or to another radio, power cycle the receiver 3 times. On the third power cycle, the LED will double blink indicating bind mode. If you cannot successfully enter bind mode with the 3-power cycle method, you can hold down the boot button for 10 seconds to reset the receiver to bind mode or use the passphrase method.

WARNING: All previous settings in the receiver will be erased and need to be re-entered when using the reset button.

Recommended: ELRS Lua

Calibration: Telemetry

Calibration: 1 5 5 Sensors

Bind