Getting Started with Your SpeedFlag

Getting Started with Your SpeedFlag

Speedflag Setup Tutorials & Troubleshooting

Before you dive in, there are a few important things to know:

Our SpeedFlag only works on PC using a software called SimHub.
You can download it here: SimHub Download
No license purchase is required — the free version of SimHub works perfectly. However, we highly recommend supporting the developers. SimHub is an essential tool for any sim racing setup.
For an even better experience, especially if you're running two SpeedFlags, we recommend the Daniel Newman Racing Plugin for SimHub. It’s a fantastic plugin that adds extra customization and control.
If you're only using one SpeedFlag, the built-in SimHub profiles will work great straight out of the box.

If you have one SpeedFlag, start here. If you have two, please follow the below

1a. Open SimHub and head to the Arduino tab.

1b. Go to "My Hardware" and select Single Arduino. Confirm that your SpeedFlag is connected and detected properly.

If you have a DUO setup (two SpeedFlags), make sure to select "Multiple Arduinos" instead.

1c. Next, head to the RGB Matrix section. Here, you’ll see a visual representation of what’s being displayed on your SpeedFlag in real time.

1d. In this section, you can:

Adjust the rotation of your SpeedFlag
Change the brightness to suit your setup and environment
Create your own custom profile
Or import existing profiles

1e. That’s the beauty of SimHub — with built-in profiles, you’re ready to go. Enjoy racing with your SpeedFlag!

If you have two SpeedFlags (a DUO setup), you're not done yet — we have a couple more steps to go. Head to section 2A!

2a. Head back to My Hardware and ensure "Multiple Arduinos" is selected. You should now see two SpeedFlags listed.

Open one of them, go to RGB Matrix Content, and set the "Right SpeedFlag" to 2.

You only need to do this if you're using a profile that supports two SpeedFlags. If you're using the standard profile, this step isn't required.

2b. Once that’s done, head to RGB Matrix — you should now see both SpeedFlags connected and working!

Troubleshooting:

I have one SpeedFlag and it isn’t showing up in SimHub?

First, ensure it’s properly connected — try using a different USB cable just in case.
If your cable is faulty or broken, let us know — we’re happy to send a free replacement.
Check for any overlapping COM ports with other devices. You can do this through Device Manager.
To open it quickly, press Windows Key + R, type devmgmt.msc, and hit Enter.
Once in Device Manager, expand the Ports (COM & LPT) section.
Find your SpeedFlag, right-click on it and select Properties.
Go to the Port Settings tab, then click Advanced — here, you can manually change the COM port number if needed.

This can help resolve any conflicts that might be preventing SimHub from detecting the device.

If none of this works, please don’t hesitate to contact us — we’re here to help.

I have two SpeedFlags but only one can connect at a time.

Sometimes there can be a conflict with the PID or device names. All SpeedFlags we make should come with unique identifiers, but if you're having trouble connecting both at once, follow the steps below to fix it:

How to Fix Dual SpeedFlag Connection Issues:

Open SimHub and head to Arduino > My Hardware.
Click "Arduino Setup Tool" and select "Load from Scratch".
On the right side:
Name your SpeedFlag something unique.
Scroll down and enable WS2812B RGB Matrix.
Set the Data Pin to 6.(Should be by Default)
In the top-right corner:
Select Arduino Pro Micro as the board.
Choose the correct COM port for your second SpeedFlag.
Enable Custom Gamepad and PID.
Make sure the first number in the PID is 9 — this ensures there’s no conflict with the first SpeedFlag.
Tick the box confirming you understand you’re uploading a new sketch and have selected the correct port.
Click UPLOAD.