The Pi or Arduino running SimHub client software (via the SimHub plugin) does NOT need its own license file. The license file lives on the host Windows PC that is running the main SimHub server. As long as that host PC has a valid SimHub.lic , all connected devices (tablets, phones, Nextion screens, Arduino boards, bass shakers) will function in unlocked mode.
A SimHub license file is a small digital key that upgrades your installation from the "Free" version to the "Licensed" version. SimHub operates on a "Donationware" model. This means that while the core features are accessible to everyone, certain performance-heavy features and convenience settings are locked behind a one-time contribution. simhub license file
If you're experiencing issues with your SimHub license file, you're not alone. Here are some common problems and solutions: The Pi or Arduino running SimHub client software
Sometimes, the automatic activation fails due to firewalls, antivirus software, or offline PCs. In this case, you must manually install the file: A SimHub license file is a small digital
SimHub locks the license to your PC's unique hardware signature (Motherboard serial, CPU ID, MAC address). If you upgrade your motherboard, CPU, or primary hard drive, the ID changes. Fix: You cannot edit the file. You must go to the SimHub Discord or support email and request a "license reset." Explain you changed hardware. They will issue a new license file.
While you can technically run SimHub without paying a cent, the free version comes with limitations that can hinder your immersion and hardware performance. 1. 60 FPS Refresh Rate
Sim racing rigs evolve. When you build that new RTX 5090 machine, your license file can come with you.
