Electronic

Electronic DIY Parts – components for building your own sim racing steering wheel

The Electronic subcategory is the heart of any sim racing DIY project. Here you'll find all the electronic components needed to build a custom control panel — from precision encoders and professional funky switches, to USB controllers that read every input, spiral coil cables and a miniature dashboard display. Products are grouped by function:

Rotary encoders

Encoders are the core input elements of any DIY steering wheel, used for adjusting engine maps, brake bias, balance or DRS. Simline carries the three most popular models used in sim racing wheel builds:

ELMA E33 – a premium Swiss industrial-grade encoder, prized for excellent click precision and longevity
Bourns PEC11H – a popular encoder with a built-in push button, ideal for applications requiring push-to-click functionality
CTS 288T232R161A2 – a CTS encoder with 16 positions, a reliable choice for rotary switches

Funky Switch – ALPS multi-function switches

A Funky Switch is a 5-axis multi-function switch (4 directions + push) — an essential component of any modern racing steering wheel. Simline's range includes:

ALPS RKJXT1F42001 – the bare switch for integration with a custom PCB
7-in-1 Multiswitch ALPS Funky Switch – a complete kit with aluminium knob and module for easier assembly
Dual Funky Switch Module – a double-switch layout with two funky switches in a single module for maximum functionality

USB controllers – the brain of the wheel

A USB controller reads signals from all buttons, encoders and switches and sends them to the computer as an HID device. Simline offers several variants for different needs:

Simline X36 Ultimate – Simline's own controller with 36 inputs, designed specifically around the requirements of sim racing steering wheels
BU0836A NC 12-bit – the classic Leo Bodnar controller, a long-standing standard in the DIY community with extensive documentation and tutorials available online
Simline BU0836A Break Out Matrix Board – an expansion board for the BU0836A that increases the number of supported buttons via a matrix
MicroBBI Controller – a compact controller for smaller DIY projects
DSD BLU32 BLE Controller – a Bluetooth wireless controller, ideal for cable-free steering wheel builds

Rotary switches, buttons and modules

BBI 12-position rotary switch – classic 12-position mode selector switch
Electroswitch TS127SZQ2 – precision rotary switch for advanced applications
Momentary push button – standard momentary button for mounting in the wheel housing
Knitter Push Button MPS103F – high-quality miniature push button
Dual Clutch Module with BPP – a ready-made module with dual clutch and Bite Point Presets functionality

Spiral coil cables and display

Simline spiral coil cable USB-A – coiled cable to connect the steering wheel to the base via USB
Spiral coil cable Micro USB – variant terminated with a micro USB connector
VoCore Screen – a miniature display for embedding in the steering wheel, showing telemetry data, gear position or engine parameters

Showing 1-20 of 20 item(s)

Electronic

VoCore screen

Vonger VoCore

vocore

47.94£

The VoCore display is available in several sizes.

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Electronic

7 w 1 Multiswitch ALPS Funky Switch

Simline

funky_pcb

21.67£

Multi-function ALPS switch with our PCB facilitating connections, plug and play with our "Dual Funky Module".

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Electronic

ALPS RKJXT1F42001

Simline

RKJXT1F42001

5.10£

Multi-function ALPS switch RKJXT1F42001

Electronic

Dual Funky Switch Module

Simline

dual_funky_module

15.76£

Finally, there's a funky switch module compatible with every controller on the market.

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Electronic

Spiral/Coil cable Micro USB

CTS 288T232R161A2 Encoder

ELMA E33 Encoder

ELMA

e33

7.25£

The best encoder on the market from Switzerland company ELMA

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Electronic

BBI - 12 position rotary switch

Leo Bodnar

bbi-12

5.14£

Connect 11 BBI-32 Rotary Switches for up to 132 inputs! – Our 12 position BBI rotary switches connect with only two wires! Simply solder two wires to the tabs on the bottom of the switch PCB, connect to a button input and let the controller do the work!

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Electronic

DSD Blu32 BLE Controller

Simline

dsd_blu32

63.85£

We present to the gaming world the DSD Blu32 BLE Controller! This remarkable device allows you to be FREE OF THE USB cable and connects to your PC via a Bluetooth 4.0 connection. Not only are you free of the USB cable, you are also free to connect rotary encoders, rotary switches, on/off toggle switches, push buttons and up to eight potentiomters to the...

Electronic

Simline BU0836A Break out Matrix board

Simline

simline_breakout

18.24£

Module facilitating the use of the Leo Bodnar BU0836A controller.

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Electronic

Momentary Push Button

Simline

pbs

1.26£

High-quality momentary button, completely different from those available on Chinese portals.

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Electronic

SimLine Spiral/Coil Cable

Simline

9.95£

SimLine spiral cable with WEIPU connector, extending up to 3 meters, available in two classes.

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Electronic

MicroBBI Controller

Leo Bodnar

leo_microbbi

34.83£

The Micro-BBI is our smallest USB board, with 20 button inputs and 1 analogue input. Build your own device with USB connectivity, this board is ideal for projects which need to fit in a very small space.

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Electronic

BU0836A-NC 12-Bit Controller

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Dual Clutch module with BPP

Simline

simline_dc_module

8.29£

Dual Clutch Module with input for Bite Point Potentiometer

Electronic

Electroswitch TS127SZQ2

Simline

TS127SZQ2

19.08£

Electroswitch TS127SZQ2

Mechanical

Aluminium Clutches (Hall sensor)

Simline

58.05£

The most precise analog clutches on the market! Perfect for your project.

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Electronic

Bourns PEC11H-4015F-S0016

Bourns

PEC11H-4015F-S0016

3.06£

One of the most popular encoders, featuring a very good feel, compact size, and a button.

Electronic

Knitter Push Button MPS103F

Simline

MPS103F

5.97£

Very high quality pushbutton switch with excellent mechanical snap-action SPDT, non-locking (momentary on). Used in real F1 steering wheels.

Electronic

Simline X36 Ultimate USB Controller

Simline

sim-x36

56.51£

The most advanced USB controller for your projects, developed in cooperation with LEOBODNAR UK, supporting up to 36 input signals + 8 analogue signals. Stable, easy to use and compact.

Which USB controller should you choose for a DIY steering wheel?

Choosing a USB controller is one of the most important decisions in any steering wheel build. Here's a comparison of the available options:

Simline X36 Ultimate – our recommended first choice for new sim racing wheel projects. With 36 digital inputs plus analogue inputs, it handles a full set of buttons, encoders and clutches in a single device without needing a matrix board.
BU0836A NC 12-bit – the classic Leo Bodnar DIY community standard. An excellent choice if you want a well-proven, extensively documented solution with a large pool of online tutorials. Expand it with the Break Out Matrix Board when you need more inputs.
DSD BLU32 BLE – the only wireless option in our range. Ideal when you want a cable-free wheel, e.g. for rally-style builds or projects with full DD base integration via QR.
MicroBBI – a compact, more affordable controller for simpler projects with a lower input count.

Which encoder should you choose – ELMA, Bourns or CTS?

Encoders differ mainly in click feel and durability. In short: the ELMA E33 is the choice for those who want the best-in-class click quality and refuse to compromise — it's an encoder used in professional industrial and medical equipment. The Bourns PEC11H is a great option when you need an encoder with a built-in push switch, while the CTS 288T works well as a more affordable alternative for positions with a small click count.

Complete DIY steering wheel build – what else do you need?

Electronics are one of the key elements of a custom wheel project. Complete your build with:

Aluminium knobs and paddle mechanisms from the Mechanical DIY Parts section
A QR quick release to connect the finished wheel to your base — available in the steering wheel quick releases category
Ready-made alternatives – if you'd prefer to skip the soldering, check out our button plates and complete sim racing steering wheels

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