siManthrop Wheelhub 70mm QR
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Wheelhub with 5Buttons, one Rotaryencoder and one Funkyswitch
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- Printables
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- Electronics
- Licencja
- Open Community License v1
I have designed a simple wheel hub that is inconspicuous behind a standard sports steering wheel and therefore does not detract from its sleek appearance. The two arms on the left and right can be rotated at an angle so that they can be adjusted to the steering wheel being used or to the best position.
Features:
- 4 buttons
- Horn button usable
- 7-way switch (funky switch)
- Rotary encoder (including push button)
Super functional for rally, off-road, and oval racing with a round sports steering wheel. For example, for tear-off visor, exit, push-to-talk, menu selection, changing the brake balance, and much more. To build the steering wheel, you need to have knowledge of Arduino and Simhub.
The depth of the wheel hub is 40 mm. Using a standard QR70 and a flat or slightly dished steering wheel, you can achieve the same depth as a Simagic GT-Neo, Conspit 300GT, etc. I connected the Arduino directly with my QR-PCB and USB-Passthrough, no cable outside and everything works without any issues.
Needed Parts:
- 6x M5x50mm Countersunk
- 2x M3x8mm Countersunk
- 2x M3 short Heatinserts
- Arduino Pro Micro (USB-C)
- Rotary Encoder KY-040 (RLECS with Knob)
- 4Way Switch/Funkyswitch (LAMELLIS RKJXT1F42001)
- 4x 12mm Push Buttons (Kiligen pre wired)
It is perfectly sufficient to print the parts in PLA. Other filaments such as PETG, ASA or even GF or CF are not necessary. However, I recommend using 4Layers, regardless of the filament choice.
The wiring can be done according to your own preferences and can be easily configured yourself with the help of Simhub. The 5 buttons (4 buttons plus horn) can be easily connected via matrix, two rotary encoders (with push button for the rotary encoder, without for the Funkyswitch), I connected the Funkyswitch individually to the Arduino (5 button pins) to simplify the coding. If you don't have any Arduino coding knowledge, you would only lose the push button function (just don't connect it). I attached my configuration in Simhub.
2026/02/06: I have made some changes to make assembly easier.