BetaFPV SuperD 2.4GHz

Wiring up your receiver¶

The image above show the receiver pinout and its connections. As we're dealing with UART connection here, Rx on receiver goes to a TX pad on the FC, and Tx on the receiver goes to an uninverted Rx pad on the FC.

There are Flight Controllers that put their Receiver UART's RX pads Low, which in turn, puts the ESP-based (e.g. the SuperD) receivers into Bootloader mode unintentionally. One remedy is to wire them into a different UART, or wire a pull-up resistor (300-1k ohm) between the Rx pad of the FC and a 3.3v or 5v pad, as shown below.

Configuring your Flight Controller¶

To configure your flight controller properly, please go through Configure FC page. These settings apply on INAV, Betaflight and other flight controller software.

Ports Tab should be setup so that Serial RX is on the UART where you have connected the receiver.

Receiver protocol is CRSF with serialrx_inverted = off and serialrx_halfduplex = off.

The next steps will not be able to proceed properly and you'll have issues later if any of these are set differently. Once you have configured your Flight Controller software, close its Configurator and unplug-replug the USB cable from the FC or your computer. This will refresh the connection and you'll be ensured that the port is not busy (of high importance with the Passthrough Flashing Method).

Flashing via WiFi¶

• Target: BETAFPV_SuperD_2400_RX_via_WIFI

• Device Category: BETAFPV 2.4 GHz

• Device: BETAFPV SuperD 2.4GHz RX

Method 1¶

With the receiver wired properly to your FC, select the correct target and set the Firmware Options in the ExpressLRS Configurator.

Build the firmware. Once done, it should open a new window where the BETAFPV_SuperD_2400_RX-<version>.bin is. Do not close this window so you can easily navigate to it once it's time to upload the firmware into the receiver.

Power your Flight Controller by either connecting a LiPo or attaching the USB cable (if the receiver gets powered from USB via a 4v5 pad). The RGB LED on the receiver will light up and show the RGB wave pattern. Then it will blink slow in Orange. Wait for about 60s(can be adjusted via ExpressLRS Configurator using AUTO_WIFI_ON_INTERVAL option) and the receiver LED should turn green and display a slow breathing pattern. It's now on Wifi Hotspot Mode.

Connect to the Wifi Network the receiver has created. It should be named something like ExpressLRS RX with the same expresslrs password as the TX Module Hotspot.

Navigate to the same web address as the TX Module (usually http://10.0.0.1). The ExpressLRS WebUI should load. Activate the Update Tab where the File Upload form is, then navigate to the folder where the BETAFPV_SuperD_2400_RX-<version>.bin is (like with the Tx module, you can also drag-and-drop the firmware file into the form field or use the Browse or Choose File button). Click on the Update button and the firmware file will be uploaded and the update process should commence.

A popup will be shown indicating the update has succeeded. Wait for a little bit until the RGB wave pattern on the receiver LED is shown indicating it has rebooted and is working normally. You should be able to get it talking with your TX module now(given you have updated the Tx Module as well, and that they have the same binding phrase and options).

Method 2¶

With the receiver wired properly to your FC, select the right target and set your Firmware Options in the ExpressLRS Configurator.

Build the firmware. Once done, it should open a new window where the BETAFPV_SuperD_2400_RX-<version>.bin is. Do not close this window so you can easily navigate to it once it's time to upload the firmware into the receiver.

Power up your Flight Controller by either connecting a LiPo or attaching the USB cable (if the receiver gets powered from USB via a 4v5 pad). The RGB LED on the receiver will light up and show the RGB wave pattern. Then it will blink slow in Orange. Wait for about 60s(can be adjusted via ExpressLRS Configurator using AUTO_WIFI_ON_INTERVAL) and the receiver LED should turn green and display a slow breathing pattern. It's now on Wifi Hotspot Mode.

Using your browser, navigate to http://elrs_rx.local/. The ExpressLRS WebUI should load. It should show your device target along with the version of the firmware it currently has.

Activate the Update Tab where the File Upload form is. Drag-and-drop the BETAFPV_SuperD_2400_RX-<version>.bin file created by the ExpressLRS Configurator into the Choose File field, or manually navigate to the Folder by clicking the Choose File button. Once the correct file is selected, click the Update button. Wait for the process to complete, indicated by a Green popup screen.

Wait for a little bit until the RGB wave pattern on the receiver LED is shown indicating it has rebooted and is working normally.

You can now power down your Flight Controller along with the receiver.

Method 3¶

With the receiver wired properly to your FC, select the right target and set your Firmware Options in the ExpressLRS Configurator.

Power up your Flight Controller by either connecting a LiPo or attaching the USB cable (if the receiver gets powered from USB via a 4v5 pad). The RGB LED on the receiver will light up and show the RGB wave pattern. Then it will blink slow in Orange. Wait for about 60s(can be adjusted via ExpressLRS Configurator using AUTO_WIFI_ON_INTERVAL) and the receiver LED should turn green and display a slow breathing pattern. It's now on Wifi Hotspot Mode.

Build & Flash the firmware using the ExpressLRS Configurator. Wait for the process to complete, indicated by the "Success" prompt and the Receiver LED has gone back RGB wave lighting patern. You can now power down the flight controller.

Flashing via Passthrough¶

• Target: BETAFPV_SuperD_2400_RX_via_BetaflightPassthrough

• Device Category: BETAFPV 2.4 GHz

• Device: BETAFPV SuperD 2.4GHz RX

Make sure you have your receiver wired properly. Rx pad on the Receiver wired up to a Tx pad on the FC, and the Tx pad on the Receiver wired up to an Rx pad on the FC. Also make sure you have setup your FC firmware to use CRSF Protocol, and that the UART is not inverted or running in half duplex.

For the following steps, you should be disconnected from Betaflight or INAV Configurator. Close the FC Configurator and unplug the FC from USB to refresh the connection.

Connect a usb data cable into your Fc and power up your receiver. If your receiver powers up with just the USB cable plugged in, then no need to connect a LiPo. If your receiver only powers up with a LiPo connected, then connect a LiPo. If you have a VTX that heats up while just sitting on the bench, either unplug it temporarily or provide some airflow into it.

Observe the RGB LED on the receiver. The RGB LED on the receiver will light up and show the RGB wave pattern. Then it will blink slow in Orange.

Select the corresponding target in the ExpressLRS Configurator, set your Firmware Options and then click Build and Flash. For first time flashing/updating, it would normally take a while.

A Success message will be shown once the process is complete.

Flashing via FTDI¶

• Target: BETAFPV_SuperD_2400_RX_via_UART

• Device Category: BETAFPV 2.4 GHz

• Device: BETAFPV SuperD 2.4GHz RX

Wire the receiver into the FTDI/UART Adapter, with TX on receiver connected to the Rx on the adapter, and RX on receiver connected to the Tx of the adapter. Wire 5V and GND of the adapter to 5V and GND of the Receiver. Press the button while powering the Receiver on, and release the button after a few seconds. The RGB LED on the Receiver will not light up.

Select the target and set your Firmware Options and once done, click on Build and Flash.

After the Success message shows, the RGB LED on the receiver will light up and show the RGB wave pattern. Then it will blink slow in Orange. Receiver is now flashed and waiting for the TX Sync.