DIY Project: Steering wheel with round VoCore 3.4 inch screen

DIY Project: Steering wheel with round VoCore 3.4 inch screen

Started as a fun project, there were so many requests for the project’s .STL files after just a few hours that a separate article with downloads is now being published. In this quickly realisable project, the dashboard around the 3.4-inch VoCore becomes a wheel add-on.

Parts list and price

The following components were used for the project, although there is a relatively wide scope for selecting the individual elements.

• VoCore Screen 3.4 inch (MPRO)
• M3x12MM cylinder head screws (five to seven depending on the rim)
• USB-C cable (variant depending on connection type)
• Suitable M5 cylinder head bolts as well as washers and, if necessary, nuts for mounting the wheel + project on the QR
• Steering wheel rim of your choice
  • Used for the project: Conspit RX320 steering wheel rim: 95€ – SimMotion*
  • Cheaper alternative: Aliexpress 330mm Rim: ~40€ – Aliexpress*
• QR
  • Used for the project: Asetek Invicta QR: 155€ – Asetek*
    

7% 3D-Simgear Gutscheincode / Coupon code: simracingpc

The total cost of the project is between €120 and €200 without a QR, depending on the selection and, above all, the source of the parts.

3D printing

This project is of course also based on a 3D-printed housing, which consists of two parts and can be supplemented with a spacer for the steering wheels if required:

• Front
• Back
• Spacer

All parts can be printed completely without support. The print settings should be chosen quite massive (3+ walls and 50% infill).

Assembly

The assembly is again quite simple, but differs slightly depending on the steering wheel rim and QR solution used.

The following structure is intended: QR | (spacer) | back | front with screen

• Screw the rear of the housing to the steering wheel and the QR. The standard bolt pattern of 70 mm is provided for this and M5 cylinder head screws are used. Depending on the curvature of the steering wheel or if there is a cut-out in the centre of the steering wheel, the additional spacer can be used here, which has an integrated cable feed-through (4×4 mm) and can be placed between the steering wheel and the housing.
• Inserting the VoCore display into the housing. Depending on the settings of the 3D printer, slight reworking may be necessary here. To be 100% safe, the display can also be fixed in place.
• Connect the USB-C cable and position it in the centre of the housing (according to the recess on the back).
• (Optional, but recommended): Additional fixing of the USB cable in the housing to avoid pulling on the circuit board of the VoCore screen.
• Assembling the housing. M3x12MM cylinder head screws are used, which are screwed directly into the housing. If the project is used on a direct drive base with high settings, threaded inserts and/or bonding should be considered.

Depending on the QR solution, the VoCore can then be connected directly to the QR through the existing feed-through (e.g. with the Asetek QR used here). If this is not possible, additional strain relief should be considered and the spacer adapted accordingly if necessary.

Software

The software used here is also Simhub, more information can be found here: DIY Project: VoCore 3.4 Inch Screen / Dashboard

Simracing-PC Dashboard

Here you can find the dashboard we designed for the display. At 800×800 pixels, it is precisely aligned to the 3.4 inch VoCore screen.

Driving impression

Conclusion

If you are looking for an unusual steering wheel, you will find it here. For comparatively little money and effort, this project offers a fun wheel that can be used for truck sims or road vehicles, for example.