Sim Racing Flag and Spotter

A flag or spotter matrix LED array for sim racing.

You'll need the following:

Matrix LED PCB:
https://de.aliexpress.com/item/32652524641.html?spm=a2g0o.order_list.order_list_main.140.41435c5fNwfGF4&gatewayAdapt=glo2deu

Arduino Pro Micro (USB-C / Micro-USB)
https://de.aliexpress.com/item/32768308647.html?spm=a2g0o.order_list.order_list_main.54.41435c5fNwfGF4&gatewayAdapt=glo2deu

• 4x M3 inserts for the front of the “Back” and 4x M3 countersunk screws to assemble the  “Front” (length depends on if you use the V1/V2 and a printed lens or a diffuser sheet)

• 2-6x M4 inserts for the back (depending on the mounting option)

  • if you use the included holder bracket: 

    • 1x M8 screw and a matching T-nut

    • 2x M4x6/8 screws and washer

  • if you want to use a RAM Mount:

    • this connector plate: https://www.printables.com/model/1302183-ram-mount-2025mm-baseplate

    • 4x M4x6/8 screws

Setup is easy, connect DIN (LED Matrix) -> 4 (Arduino), +5V -> VCC, GND -> GND
For software SimHub was used, just install it through "Arduino" -> "My Hardware" -> "Setup tool" and choose the correct Arduino and LED Matrix with the connector being "4"

V2:
Added an optional transparent lens to cover the LEDs

V3:
Added BackV2 with improved mounting options and the option to use a 1mm LED diffusor sheet.

If you like my work and want to support me you can use my code @Niklas at checkout in the Prusa webstore to get bonus Prusameters with any printer purchase and free filament when you buy a Core One or XL.