Hi,

I made this simple wireless button box for 350mm wheel for moza base. I used Aliexpress MOZA-QR to 6x70mm Adapter and some 350mm wheel from aliexpress. The design might fit other brands of adapters for different wheel-bases but I have no way to check that.

For this project I used PA6-CF for the front part which is visible all the time and is meant to hold two other plates using normal self-drilling screws. The yellow part in the middle and "washers" for buttons and MOMO logo were made using PETG.

The design allows you to add 10 functional buttons and two buttons on the back for turning on/rest etc. There is also a hole in the back for USB-C port meant for panels. Encoder I used is the 2.4ghz xbox controller emulator. It can be found on aliexpress for +-8 Eur.

The buttons I used have 12mm diameter mouning hole and they are 17,5mm in diameter. You need 12 of them. After printing I added physical switch which cuts off the battery power to circuit board so the hole isn't made in back plate stl file.

Specs:

Wireless 2.4ghz

Maximum battery dimensions: 78x30x4,3mm

Battery connector: PH2.0

Encoder connectors: JST 2.54mm

10 Programmable buttons and 2 System buttons

I will add the photo of which encoder too look for on ali/amazon.

You have to measure everything yourself - it is not plug and play but it might help you skip the most time consuming process- thinking how to make it make sense.

Wireless Button-box for 6x70mm 350mm Sim-Racing

0.2mm layer, 2 walls, 15% infill