Hi guys. I made external RPM lights for GT7 using a Raspberry Pi Pico W and some NeoPixels. The Pico talks directly to the console over wifi so a PC is only required for configuration.
github.com
GitHub - jfedor2/gt7-rpm-lights: DIY RPM lights for Gran Turismo 7
DIY RPM lights for Gran Turismo 7. Contribute to jfedor2/gt7-rpm-lights development by creating an account on GitHub.