Most fashionable radio transmitters assist FPV simulators through their USB port natively. Nonetheless, there are older radios that don’t, as a consequence of limitations like USB ports getting used just for charging or firmware updates, or the absence of USB ports altogether. On this tutorial, I’ll share different strategies to deal with this challenge. Because of Betaflight, you need to use any radio to play FPV simulators wirelessly, all you want is an F4 or F7 FC (flight controller) and a radio receiver.
If you wish to decide up a contemporary radio that assist FPV sims with none DIY mods, take a look at my radio suggestions: https://oscarliang.com/radio-transmitter/
By way of Betaflight Flight Controller
Betaflight can flip your flight controller right into a joystick (HID gadget) and go instructions from the receiver to your laptop. This implies you possibly can play FPV simulators with out straight connecting your radio to the pc!
I do know, it’s a pleasant drawing. It was late at evening, however this can do for now 😉
This additionally means you need to use any radio to play simulators, even people who may not have a USB port or coach port, such because the Flysky i6 or Turnigy 9X.
Because it’s a wi-fi connection, you’re not constrained by the size of the USB cable, permitting you to lastly lay again and luxuriate in!
I haven’t measured the precise latency, however I don’t really feel any noticeable delay in comparison with a USB cable connection.
{Hardware} Requirement
You don’t want any further {hardware}; you possibly can simply use your drone for this.
However in order for you a devoted FC and RX setup for taking part in simulators, listed below are the most cost effective elements I may discover:
Relying in your radio, select a suitable receiver:
Join the receiver to the FC. Be certain to make use of the “4V5” pad or whichever 5V pad that powers the receiver when the USB cable is plugged in, without having to plug in a LiPo battery.
Right here’s a wiring diagram for the ELRS EP1 receiver to the JHEMCU F411 NOXE V3.
Betaflight Setup
Join the RX to the FC, and set it up in Betaflight as you’d usually do for a quad. If you happen to need assistance organising receivers in Betaflight, here’s a full information on methods to setup ExpressLRS.
Enter This in CLI
When you’ve confirmed the RX is working within the Receiver tab (channels are responding to stay actions), go to the CLI and enter:
set usb_hid_cdc = on save
This command prompts joystick mode.
Choose Joystick in FPV Simulator
As soon as it’s arrange correctly, your flight controller will seem as a joystick in your PC, and you need to be capable of choose it within the FPV simulator. Be certain to calibrate it within the sim the primary time, and also you’re good to go!
Warning: If you’re doing this on a quad, bear in mind to TURN OFF USB_HID_CDC earlier than your subsequent flight by getting into this command in CLI!
set usb_hid_cdc = off save
COM Port Disappeared After HID
If you happen to can’t hook up with Betaflight once more after enabling USB_HID_CDC, there’s a straightforward repair.
With the FC linked to your laptop through USB (however not acknowledged, and no COM port seems):
- Go to the “Choices” tab on the left within the Betaflight Configurator house web page.
- Allow “Present all serial units (for producers for improvement)”.
- Unplug and reconnect the USB cable, then restart Betaflight Configurator.
As soon as this feature is enabled, your flight controller will magically reappear! If you happen to flip off ‘Present all serial units,’ the flight controller disappears once more. However with the choice turned on, you possibly can hook up with your flight controller once more.
Now, you need to use the CLI to kind “set usb_hid_cdc=off,” or you possibly can go away it on if you want. The one draw back to leaving it on is you could’t hook up with it till you alter that possibility.
If that didn’t work, you may must reflash the FC with “Full Chip Erase” enabled. Maintain down the boot button on the FC whereas connecting the USB cable; this could put the FC in DFU mode (bootloader mode), able to be flashed.
Devoted Wi-fi Sim Field
For these comfy with electronics, making a DIY wi-fi simulator field may be an possibility. This includes a devoted flight controller and a receiver.
I’m utilizing a Frsky receiver on this instance, however you possibly can change it with some other receiver you need, equivalent to ExpressLRS, Crossfire, or Flysky.
The FC, RX, and the plastic field are all spare elements that I not use. The coin stack is for stability, so it gained’t get dragged or slide round by the USB cable.
Wi-fi Sim Stick
This can be a industrial answer just like the DIY “wi-fi sim field” I made. It really works the identical means however is put collectively neatly as a extra polished product. It’s basically an ExpressLRS receiver with a processor that converts the sign and sends it to your laptop through USB.
If you happen to don’t thoughts spending a bit extra, this may prevent a while.
Get it from GetFPV: https://oscarliang.com/product-bicw
ExpressLRS Bluetooth Joystick
Do you know that your ExpressLRS module has built-in Bluetooth? You need to use it to connect with your laptop and play FPV simulators and not using a USB cable.
In case your laptop doesn’t have Bluetooth, then you want to get a Bluetooth adapter right here (affiliate hyperlink):
I’ve an in depth information on methods to set it up: https://oscarliang.com/expresslrs-bluetooth-joystick/
Coach Port to USB Adapter
In case your radio transmitter has a coach port, you need to use a coach cable linked to a USB dongle to hyperlink your transmitter to the PC. This technique converts the coach port output right into a USB enter recognizable by the pc.
These dongles have been round for years and are designed for older radios (equivalent to these from Futaba, Flysky, and Spektrum) which may not natively assist simulators through USB. Earlier than shopping for, seek the advice of the guide or vendor to make sure the dongle helps your specific radio mannequin.
Get a RC Sim dongle from:
Edit Historical past
- Jun 2018 – article created for Frsky D16 receivers
- Apr 2021 – tutorial up to date, shared my devoted wi-fi sim field
- Dec 2023 – tutorial up to date for ExpressLRS receivers, up to date product hyperlinks
