I’ve made a low-cost wireless LCD dashboard for Forza series (also supports ETS2/ATS).
Watch the video: https://www.youtube.com/watch?v=D59rC5C5DTI
The hardware is pretty simple: only an ESP32C3 core board, a LCD 2004 I2C screen and a 8xWS2812 RGB LED stick. All the patrs are connected by jumper wires (no soldering required). I brought all these parts under $5.
All the hardware design and firmware code have been open-sourced at: